|Publication number||US3872945 A|
|Publication date||Mar 25, 1975|
|Filing date||Feb 11, 1974|
|Priority date||Feb 11, 1974|
|Publication number||US 3872945 A, US 3872945A, US-A-3872945, US3872945 A, US3872945A|
|Inventors||Arthur D Hickman, Raymond H Hickman|
|Original Assignee||Falcon Research And Dev Co|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (8), Referenced by (175), Classifications (24), Legal Events (6)|
|External Links: USPTO, USPTO Assignment, Espacenet|
lllnlted ttes Hickan et a1.
[451 Mar. 25, 1975 MOTORIZED WALKER  Inventors: Arthur D. Hickman, North Glenn,
Colo.; Raymond H. Hickman, Shelton, Nebr.
[73} Assignee: lFalcon Research and Development Co., Denver, C010.
22 Filed: Feb. 11, 1974 211 App]. No.: 441,507
 US. Cl... 180/65 R, l80/DlG. 3, 280/87.02 W, 297/D1G. 4, 297/5  llnt. Cl 360k 1/00 [5 Field of Search 180/65 R, DIG. 3, 79.1, 180/792, 79.3; 280/210, 212, 242 WC, 41,
7.1, 87.02 W, 87.04 R; 297/DIG. 4, 5, 6, 7,
 References Cited UNITED STATES PATENTS 1,235,973 8/1917 Heid 180/65 R 1,890,396 12/1932 Maphet 297/ 2,733,754 2/1956 Leslie et a1. 297/6 2,892,506 6/1959 Slater l/DIG. 3 2,989,139 6/1961 Panter et a1. 280/242 WC 3,107,105 10/1963 Heriford 280/211 11/1973 Meyer l80/D1G. 3 2/1974 Moon /65 R Primacy Examiner-David Schon'berg Assistant ExaminerDavid M. Mitchell Attorney, Agent, or Firm-Jay H. Quartz; Donald E. Nist  ABSTRACT A powered walker for use by disabled persons in a standing position within the walker comprises a foursided frame extending vertically upward from a plat-' form with the frame being supported below the platform for transportational movement by a pair of front wheels, one of which is powered, and by a pair of rear wheels which can be turned for steering the walker. The driven front wheel is powered by an electric motor, the operation of which is controlled by the walker user who operates a switch which is electrically connected to the motor through a control circuit. Steering is effected by movement of a hand-operated tiller which is connected through linkages to the rear wheels. Hand-operated brakes are also provided. The walker carries its own rechargeable battery, as well as padded supports to aid the walker user.
12 Claims, 7 Drawing Figures PATENTEUMAR2519Y5 3,872,945
SHEET 1 [1F 3 "Wei PATENTEDHARZSIQYS 1 7 945 sum 2 of 3 M w 115 v 1 f ,12/ 40 3a 14 52 J? v 42 60 M16.
MOTORIZED WALKER BACKGROUND OF THE INVENTION This invention relates to wheeled walkers and, more specifically, to occupant Controlled, powered walkers.
Wheelchairs have been employed for a considerable time for transporting persons who are physically handicapped in their legs (and sometimes in other parts of their bodies). Although wheelchairs have become highly sophisticated, they do not provide the physical and psychological benefits to handicapped persons that are provided by walkers which permit a person to posi tion himself in a substantially standing position.
Walkers present a number of problems which are not encountered in wheelchairs. Such problems arise from the fact that a users body extends substantially above the center of gravity of a walker, thereby leading to the possibility of tipping over. If a walker is made with a very large base area, maneuverability'of the walker is restricted. Additionally, it becomes more difficult to provide support for the walker user.
Early walkers such as described in US. Pat. No. 2,168,424, issued Aug. 8, 1939, and entitled Invalid Walker," while permitting an invalid to become more mobile, had several dificiencies. They required the walker user to use his own power which, both because of the users disability and his, general lack of exercise, was quite limited and which was often quickly exhausted. Additionally, they necessarily had a large base cross-sectional area and thus were not highly maneuverable, nor were they particularly useful around furniture, etc.
Later versions of walkers featured power by other than foot power and because the users legs were no longer needed for power, included a platform for supporting the user above the ground. Examples of such walkers are described in US Pat. No. 3,107,105, issued Oct. I5, 1963, and entitled Standing Support for Paraplegics and US. Pat. No. 3,249,368, issued May 3, 1966, and entitled Ambulating Device for Paraplegics." The former featured a hand-driven, power system, while the latter required the user to pole the walker along. Both walkers thus required the user to expend his own limited energy in propelling the walker along. Additionally, possibly because of the stability problems associated with self-propulsion and/or the self-propulsion mechanism of the former patent, these walkers had quite large cross-sectional areas thereby limiting their usefulness around furniture and their maneuverability.
In view of the foregoing, there still remains a need for a walker which is highly maneuverable and yet which provides adequate support and safety for physically handicapped persons and which does not require that the user expend his energy in operating the walker.
SUMMARY OF THE INVENTION This invention is embodied in a powered walker which is suitable for use by disabled persons who are capable of being maintained in a standing position. The walker comprises a vertically-oriented, four-sided frame which terminates at its lower end in a footsupporting platform and which is supported for transportational movement by a pair of front wheels which are mounted independently of each other and by a pair of interconnected rear wheels. One of the front wheels is powered by a chain drive from an electrical motor which can be controlled by a walker user by manipulation of a toggle switch which is electrically connected to the motor through appropriate control circuits. The rear wheels are turnable for steering the walker, with their movement being controlled by the walker user by operation of a tiller which is connected by linkage to the rear wheels. The walker is also provided with handoperated brakes which act on the front wheels. To make the walker an essentially self-contained unit, it is also provided with a rechargeable battery.
One of the sides of the frame forms a gate for providing access to the interior ofthe walker. Pads are carried interiorly of the walker to provide support to the walker user.
The herein-described walker is characterized by sev eral advantageous features. It has a relatively small horizontal cross-section which, together with the walkers interior padded supports, provides the walker user with good support. Additionally, the small horizontal crosssection permits the walker to be moved through smaller openings between furniture, etc., thereby allowing it to move nearly approximate the movements of a person without a physical handicap. Furthermore, its small cross-sectional area places its user closer to wheelchairs and other objects to which the user may want access, for example, when entering and leaving the walker. In spite of its relatively high ratio of height to base area, it can be safely used with little fear that it will tip over, such as when a user negotiates the walker around furniture. This is because a large proportion of the walkers weight is distributed so that it has a low center of gravity. Additionally, stability is enhanced by providing traction at one of the front wheels and steering at the rear wheels.
Another advantage derives from the fact that this walker is electrically powered and, thus, in marked contrast to prior art user-powered walkers, its operation does not use up the limited energy ofmost disabled persons who are confined to wheelchairs. Additionally, all of the controls (for braking, steering and power) are conveniently positioned for operation by the walker user. Furthermore, its steering in combination with its small cross-sectional area make it highly maneuverable.
DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of the frame assembly of the herein-described motorized walker.
FIG. 2 is a perspective view of the complete motorized walker.
FIG. 3 is a plan view of the underside of the motorized walker showing the rear wheel steering mechanism.
FIG. 4 is a partial sectional view of a front wheel and drive assembly.
FIG. 5 is a perspective view of the backrest and relay box support device.
FIG. 6 is a schematic diagram of the electrical circuit employed to power the walker.
FIG. 7 is a plan view of an alternative embodiment of a cross-member for use in a foldable version of the described walker.
DESCRIPTION OF THE PREFERRED EMBODIMENT juxtaposed, interconnected side frame units 14, 16. Each of the lattercomprises vertical front and rear posts 18, 20, respectively, which are interconnected, as by welding, by vertically-spaced-apart side rails 22, 24, 26. The upper side rail or handrail 22 of each side frame unit 14, 16 can serve as an arm rest and can be grasped by a user when entering or shifting position within the walker. The lower side rail 26 of each side ,frame unit 14, 16 may be provided (as could other sides of the walker) with a forward extension 28 which may be covered by a resilient, e.g., rubber, bumper 30 for absorbing shocks if the walker is caused to bump into furniture, etc.
The rear or back of the walker 10 is formed by a pair of vertically-spaced-apart cross-members 32, 34. These cross-members 32, 34 and other members of the frame assembly 12 function not only as rigidifying and strengthening means, but they also function as support means for other components of the walker 10 as will be described herein.
Support means are carried at the lower extremities or margin of the frame assembly 12 for supporting a walker user thereon. Such support means comprises a pair of arcuate side members 36, 38, each of which is connected at its forward end to the lower end of a front post 18 and at its rearward end to a lower side rail 26 at a point on the latter adjacent to the corresponding rear post so that the arcuate side members 36, 38 are located vertically below the lower side rails 26, 26. The support means further comprises a tubular frame 40 which is joined to the arcuate side members 36, 38 by short connector tubes 42. A platform 44 is carried on the tubular frame 40. The latter may be provided with an upstanding rear edge flange 46 and with upstanding side edge flanges 48, 50 to aid in preventing movement of a users foot off the platform 44.
The frame assembly 12 is supported for transportational movement over a surface by wheel means which comprises a pair of independently-mounted front wheels 52, 54 and a pair of interconnected rear wheels 56, 58. The front wheels 52, 54 are fixed for forwardreverse movement only. One of the front wheels 54 is powered and serves as the drive wheel, while the other front wheel 52 is free-wheeling. Each of the front wheels 52, 54 is rotatably mounted between the tubular support frame 40 and side frame units 14, 16 on rigid half axles 60, 61, respectively, which are rotatably attached at their respective oute'r ends to the lower ends of front posts 18 of the side frame units 14, 16 and at their respective inner ends to the forward tubular member of the frame 40.
The rear wheels 56, 58 are each rotatably carried in a castor 62, 63, respectively. The latter, in turn, are mounted for swivel movement in vertical sleeves 64, 66, which are joined to the frame assembly 12 at the rear ends of the lower side rails 26 which extend behind the rear posts 20. For additional strength and stability,
To close" the space defined by the front posts 18, 18, a gate 76 is hingedly connected at its one side to one front post and carries a vertically-movable latch pin 78 adjacent its other side for locking engagement with an apertured boss 80 attached to the other front post. The gate 76 carries a knee pad 82 which is attached to its inner surface. The height of the gate 76 above the platform 44 is established so that the pad 82 will be in contact with a users legs at the level of the users knees to provide front support to the user.
A bracket 84 is connected to and depends from the upper rear cross-member 32. To this bracket 84, an elongated, rigid support 86 is adjustably connected and carries a back pad 88 at its upper end. A restraining belt 90 is attached to the rear of the back pad 88 for encircling the body of a walker user to further aid in supporting the user.
Brake means are provided to prevent the walker 10 from moving when not under power and to facilitate entry and exit of a user. Preferably, the brake means comprises dual brake systems 92, 94, only one of which will be described since they are identical to each other. The right hand brake system 92 comprises an intermediate connector bar 96 which is sufficiently long to extend from a point adjacent to the right front wheel 52 to a point along the front right post 18 which is readily accessible to the right hand of a user of the walker 10. At its lower end, the intermediate connector bar 96 is pivotally connected through pin 97 to a brake bar 98, which is medially pivotally connected through pin 99 to the right front post 18 adjacent the right front wheel 52 and which is provided with a flange 100 at its forward end for engagement with the right front wheel when the brake is on. At its upper end, the intermediate connector bar 96 is pivotally connected through pin 101 to a brake lever 102 which, in turn, is pivotally connected at its forward end through pin 103 to a tab 104 which is fixedly attached to the right front post 18 so that a walker user can easily reach the brake levers 102, thereby placing them in a hand-operable position. When the free end of the brake lever 102 is rotated upward and forward about pin 103 to the position shown in dotted outline in FIG. 2 for the left-hand brake 94 (beyond dead center relative to the pin 103), so that locks itself in place, the intermediate connector bar 96 is raised vertically, thereby causing the brake bar 98 to pivot about pin 99 to force the brake flange 100 into locking engagement with the right front wheel 52. Downward and rearward rotation of the lever 102 about the pin 103 works in a similar but directionally opposite way to release the brake flange 100 from engagement with the wheel 52.
Steering means are provided for changing the direction of the rear wheels 56, 58 in order to control the di' rectional movement of the walker 10. Such steering means (for a right-handed person) comprises a tiller 106 which is positioned a spaced distance above, for example, the right handrail 22, so that it is comfortable to operate. The tiller 106 is fixedly connected to a vertically-aligned shaft 108, which is free to rotate as the tiller is rotated and which extends downwardly through a bushing 110 which is attached to the handrail 22 and terminates in a second bushing 112 which is attached to a horizontal plate 113 inboard of the right arcuate side member 36. A master arm 114 is fixedly joined to the tiller shaft 108 adjacent to the lower bushing 112 and is pivotally connected through a pin 115 to a control arm 116. In turn, the control arm 116 is pivotally connected through apin 117 to a castor arm 118 which is affixed to and extends inwardly from the right castor 62. A second castor arm 120 is also affixed to and extends generally forwardly from the right castor 62. This castor arm 120 is pivotally connected through a pin 121 to one end of a connector arm 122 which is pivotally connected at its other end through a pin 123 to a castor arm 124 which is affixed to and extends generally forwardly from the left castor 63.
As an example of the operation of the steering means, in order to turn right, the tiller 106 is rotated clockwise, which then causes the tiller shaft 108 to be similarly rotated about its own axis. In turn, the master arm 114 is caused to turn clockwise. This moves the control arm 116 rearward causing the right castor 62 to be rotated counter-clockwise. In response to the rotation of the right castor 60, the left castor 63 is also rotated counter-clockwise, thereby enabling the walker to move forward or backward to the right.
The rear wheels 56, 58, when turned, are oriented at different angles to the direction of movement of the walker 10. This results from the normal functioning of the described steering means and is intentional. lts pur pose is to maintain all four wheels on circular arcs having a common center, for all angles of turn, and thus to prevent any skidding of tire surfaces.
Power means are provided to move the walker 10 forward or rearward so that, together with the described steering means, the walker can be made to move straight forward or back, to turn to the left or right in forward or back directions, and to circle. The power means includes a number of components with control being initiated by a toggle switch 130 mounted in the forward end of the tiller 106. The toggle switch 130 has forward and rearward on positions and an intermediate off" position. It is electrically connected through wires 132, which terminate in an electrical housing 134 which is mounted to the bracket 84 to which the backrest pad support 86 is also attached. This housing 134 encloses the wiring shown in dotted outline in FIG. 6, which briefly comprises a number of relays 136, 138, a charging jack 140 and braking resis tor 142 (which may generally be referred to as relay circuit means). Electrical leads 150 (FIG. 2) connect the circuits in the electrical housing 134 to the battery 74. In turn, the latter is electrically connected through the relay circuit means and through an electrical cable 151 to a motor 160 which is mounted at one side of the platform 44 adjacent to the left, lower side member 26.
The motor 160 is connected to the left front wheel 54 by drive means which comprises a chain 162 which extends over a hub sprocket 164 on the motor and over a plate sprocket 165 on the wheel. Other drive means, such as belts and pulleys, could be used in place of the chain and sprockets shown. A wire guard 166 may be attached to the platform 44 to cover the chain 162 and sprockets 164, 165.
Powered operation of the walker 10 will now be described'with reference to FIG. 6. The walker is prepared for motion by moving the main switch 168 to the on position, connecting point P to point R. Thus, the positive battery voltage is available at point A of relay 136 and thence to point L of relay 138; the negative side of the battery voltage is simultaneously available at point D of relay 136 and thence to point S on the motor 160. As soon as the positive voltage is applied to point T of the motor 160, forward movement of the walker will be provided. This is obtained by moving'the toggle switch to the forward position, connecting positive voltage from point R to point X, to point Y, to point N on power relay 138. Since point M, the
. opposite end of the actuating coil of relay 138, is already permanently connected to negative voltage, relay 138 actuates, connecting point J to point L, to point B, to point A, to positive voltage, and forward movement results. To effect reverse movement of the walker, the toggle switch 130 is moved to the reverse position, connecting point U to point W and point X to point 2, once again activating power relay 138 as before, plus activating reverse relay 136 by applying positive 'voltage from point P to point R to point U to point W, to point H on the coil of relay 136. Since point G, the opposite end of the activating coil of relay 136 is already permanently connected to negative voltage, relay 136 activates, now placing negative voltage on point D to point F, to point L, to point J to point T on motor and positive voltage on point P, to point R, to point A, to point C, to point S on motor 160-and reverse movement occurs. Whenever power relay 138 is unactivated (the position shown in FIG. 6), for neither forward nor reverse movement, braking resistor 142 is connected across points S and T of motor 160, which, if in motion will act as a generator until the walker coasts to a stop and provides energy into braking resistor 142 which will dissipate said energy as heat and assist in stopping either'forward or reverse movement of the walker and thus act as a dynamic brake.
In order to recharge the battery 74, a battery charger V 170 is connected to electrical housing 134 at charging jack 140 and plugged into an ordinary wall socket to supply AC. Main switch 168 is moved to the charge position, connecting point p to point Q and thus supplying charging current to the battery 74.
The powered walker thus described has a minimal base area which makes it practical for use by a disabled person who must negotiate between objects such as furniture, and has a height which makes this walker convenient for use by an adult. From these dimensions, it can be seen that the walker 10 could be tipped over. To minimize this problem and still retain the walkers usefulness clue to its small base area, the Walker 10, as described, has been provided with front wheel drive, with only one front wheel being powered (the other being free-wheeling), and has been designed so that it has a minimally low center of gravity by, for'example, placing the battery 74 and the platform 44 as low as possible. This combination of features, together with rear steering, both minimizes the possibility of tip-over in general and practically eliminates the possibility of tip over in a rear direction in particular (of which walker users have the greatest fear). Additionally, if tip-over occurs in a forward direction, the walker user has an opportunity to minimize its potentially adverse effects by using his hands and arms. Without the described particular combination of features, the possibility of tip-over in general and/or the possibility of rearward tip-over would be significantly greater. For example, front wheel drive, with both wheels being powered and all the other features as described herein, would not combine to produce the degree of safety available with this walker 10.
It will be apparent from the foregoing description that a preferred embodiment has been described and that additional components, e.g., pads, could be added to the walker 10 and that other steering and braking de vices could be employed. Additionally, this walker 10 could be made foldable by positioning the electrical units, such as the battery 74, to one side, by making the structural members extending across the back and base of the walker in such a way that they would each comprise a pair of telescoping sections 80, 82 with removable locking pins 84 extending therethrough when the walker 10 is in use as shown by way ofexample, in FIG. 7 for the upper rear cross-member 34, by making the platform 44 removable, and by hanging the gate 76 on the right front post 18 so that it can be rotated back to lie against the exterior of the right side frame unit 14. By removing the locking pins 84, removing the platform 44, and swinging the gate 76 back, the opposing sides l4, 16 of the walker could be moved towards each other to further reduce the width of the walker.
l. A powered walker which comprises: an upstanding rigid frame assembly comprising interconnected, rigid frame members defining (a) vertical sides which define a vertical space for receiving a users body and defining (b) an entryway in one side thereof, said frame assembly connected to and terminating at its lower end in support means for supporting a walker user thereon in standing position within said frame assembly; a gate hingedly connected to said frame assembly along one side of said entryway and sized to extend across said entryway for closing engagement with said frame assembly along the opposing side of said entryway; wheel means connected to said frame assembly for supporting said frame assembly above a surface for transportational movement thereover, said wheel means comprising a pair of independently-mounted front wheels and a pair ofinterconnected turnable rear wheels; electrical power means carried within said frame assembly; drive means connected to said electrical power means and to one of said front wheels; switch means mounted adjacent the upper end of said frame assembly for manual operation by a walker user and electrically connected to said electrical power means; steering means connected at a lower end to said rear wheels and rotatably connected at its upper end to said frame assembly adjacent said upper end thereof; and brake means carried vertically along said frame assembly and terminating at one end adjacent said wheel means and for engagement therewith when said brake means are applied and terminating in a hand-operable position adjacent said upper end of said frame assembly.
2. The powered walker of claim 1 wherein:
said electrical power means comprises an electric storage battery, a motor, and relay circuit means for producing forward and reverse movement of said walker, said relay circuit means being electrically connected to said switch means, to said motor, and to said battery.
3. A powered walker which comprises:
an upstanding rigid frame assembly comprising a pair of side frames, a back, and horizontal support means at its lower end for supporting a user thereon in standing position within said walker, said side frames defining a front entryway;
. 6 a gate hmgedly connected to one of said side frames and sized to extend across said entryway for closing engagement with the other said side frame;
a pair of independently-mounted front wheels and a pair of interconnected rear wheels connected to and supporting said frame assembly at its corners above a surface for transportational movement 5 thereover, said front wheels each being rotatably carried on an axle connected to said frame assembly to prevent directional turning of said front wheels and said rear wheels each being mounted for turning movement for changing the direction of movement of said walker in response to steering means connected at its lower end to said rear wheels and rotatably connected at its upper end to one of said side frames for hand operation by said walker user when in a standing position;
' brake means carried on said frame assembly and having a pair of lower ends positioned adjacent one pair of said front or back wheels for engagement with said one pair of wheels when said braking means is applied and having upper ends in handoperable position for said walker user;
an electric motor mounted on said frame assembly adjacent said support means;
drive means interconnecting said electric motor and one of said front wheels, the other of said front wheels being free-wheeling;
relay circuit means carried on said frame assembly and electrically connected to said motor;
switch means'mounted on said frame assembly in a position for hand operation by said walker user and electrically connected to said relay circuit means; and
an electric storage battery mounted within said frame assembly adjacent said support means and electrically connected to said motor through said switch means.
4. The walker of claim 3 in which said brake means acts on said pair of said front wheels.
5. The walker of claim 3 which further includes:
padded supports mounted on, and interior of, said frame assembly to support said walker user in front at about the knees of said user and in back at the back of said user. a
6. The walker of claim 5 wherein said gate is padded on its inner side and the height of said gate is adjusted to provide said knee support.
7. The walker of claim 5 which further includes belt means attached to said back of said frame assembly and positioned to pass around the waist of said walker user.
8. The walker of claim 3 wherein each of said side frame includes a top member which serves as a handrail for said walker user and wherein said steering means comprises:
a tiller positioned adjacent one of said handrails for rotational movement with respect to said frame assembly; an elongated, vertical rod fixedly connected at its upper end to said tiller and rotatably connected to said frame assembly for rotation with said tiller; and
linkage means connected to said elongated rod and to said pair of rear wheels for causing said rear wheels to turn in response to movement of said tiller.
9. The walker of claim 8 wherein said linkage means is connected to said rear wheels so that said rear wheels turn at different angles to the direction of movement of said walker with respect to each other to maintain all 10. The walker of claim 8 wherein said switch means is mounted on said tiller.
support means in fixed position to prevent directional turning of said front wheels, said rear wheels being mounted in castors rotatably connected to said frame assembly;
10 linkage connected to both said upper lever and said lower brake flange to cause said brake flange to en gage and disengage said respective front wheel; steering means comprising (A) a tiller positioned ad- A P f W l which Comprises: 5 jacent one ofsaid handrails, (B) an elongated vertian upstanding "8 f f m y' rectangular Cally-disposed rod fixedly connected at its upper g i i gomprllsmg a P l frames, 3 end to said tiller and rotatably connected to said ac a ofnzoma ig b i til mterfcfnnect frame assembly to permit rotation of said tiller w1th mg Sal e rames at 6 0t Om ere) or res ect to said frame assembl and (C) linka e porting awalker user thereon in standing position 10 megns connected to the lowery end of Said Wlthin f Walker said Side frames defining an gated rod and to said rear wheels for causing said gil 1; 32253822g ii i g i g g z ligiz upper rear wheels to turn in response to the rotation of said tiller;
a glatealhnlgtecglyuftonknicgtegetgfinzgjmiafilesfirggfi an electric motor mounted on said frame assembly means and sized to extend across said entryway for fldjdcent a support m Closing engagement with Said other Side frame Said drive means interconnecting said electric motor and gate carrying a knee pad on its interior side for supl i s i g fi i F other of Sald from porting the legs of a walker user; 5 d b] a pair of independently-mounted front wheels and a re f fi Came l f m y pair of interconnected rear wheels supporting said a ec'mcd y congecte a g I frame assembly at its four corners above a surface swltc means mohlme F er or f Opera for transportational movement thereover, said. togthef l filler and elecmcauy front wheels each being rotatably carried on axles nectecuo relay Clrcult means; Connected to one of said Side frames and to Said an electric storage battery mounted within said frame assembly adjacent said support means and electrically connected to said motor through said switch means.
12. The powered walker of claim 11 which further includes a back pad mounted on the back of said frame assembly for cooperation with said knee pad in supporting a walker user within said walker, said rectangular crosssection of said frame assembly being sized to just receive a walker user so that said pads effectively support said walker user.
brake carried on each of said side frames adjacent the front of said walker, each said brake having a lower end brake flange positioned adjacent one of said front wheels for engagement therewith when said brake is applied and having an upper end lever in hand-operable position for a walker user to produce corresponding movement in intermediate
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US1235973 *||Feb 24, 1917||Aug 7, 1917||Frank Heid||Wheeled chair.|
|US1890396 *||May 31, 1930||Dec 6, 1932||Maphet Nancy E||Invalid's support|
|US2733754 *||May 4, 1953||Feb 7, 1956||Invalid walker|
|US2892506 *||Jan 15, 1957||Jun 30, 1959||James A Slater||Electrically driven invalid chair|
|US2989139 *||Aug 7, 1959||Jun 20, 1961||Pantek Julia||Mobile stand|
|US3107105 *||Jun 10, 1960||Oct 15, 1963||Russell W Heriford||Standing support for paraplegics|
|US3770073 *||Mar 30, 1971||Nov 6, 1973||W Meyer||Foldable invalid chair|
|US3794132 *||Aug 16, 1972||Feb 26, 1974||Lakeside Mfg Inc||Self-propelled wheelchair|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US4135535 *||Oct 4, 1977||Jan 23, 1979||Temco Products, Inc.||Invalid walker apparatus|
|US4157123 *||Mar 6, 1978||Jun 5, 1979||Everest & Jennings, Inc.||Wheelchair electrical control circuit|
|US4254948 *||Jan 5, 1979||Mar 10, 1981||Jacobs Eugene A||Mechanized crutch|
|US4364580 *||Sep 25, 1980||Dec 21, 1982||The School of Bioengineering and Biophysics of the University of Dundee||Wheelchair|
|US4776415 *||Jul 13, 1987||Oct 11, 1988||Brice Michael L||Safety control for baby's walker|
|US4802542 *||Aug 25, 1986||Feb 7, 1989||Falcon Rehabilitation Products, Inc.||Powered walker|
|US4809804 *||Nov 28, 1986||Mar 7, 1989||Falcon Rehabilitation Products, Inc.||Combination wheelchair and walker apparatus|
|US4907794 *||Dec 24, 1987||Mar 13, 1990||Guardian Products, Inc.||Foldable rolling walker|
|US5137102 *||Feb 1, 1989||Aug 11, 1992||Retec Pr, Inc.||Combination wheelchair and walker apparatus|
|US5156176 *||Mar 4, 1991||Oct 20, 1992||Doorenbos Daryl E||Stabilized walker device|
|US5168947 *||Apr 9, 1991||Dec 8, 1992||Rodenborn Eugene P||Motorized walker|
|US5174590 *||Jul 3, 1991||Dec 29, 1992||The United States Of America As Represented By The Administrator Of The National Aeronautics & Space Administration||Compliant walker|
|US5320122 *||Jul 3, 1991||Jun 14, 1994||H. Jacobson II Julius||Combined walker and wheelchair|
|US5348336 *||Feb 9, 1993||Sep 20, 1994||Fernie Geoffrey R||Walking aid|
|US5524720 *||Aug 19, 1994||Jun 11, 1996||Lathrop; John||Powered walker having integrated parallel bars|
|US5526893 *||Jan 27, 1994||Jun 18, 1996||H. Eugene Mack||Physical therapy apparatus|
|US5701965 *||May 27, 1994||Dec 30, 1997||Deka Products Limited Partnership||Human transporter|
|US5716063 *||Mar 20, 1995||Feb 10, 1998||Csia Research Foundation||Walking aid|
|US5772234 *||Sep 23, 1997||Jun 30, 1998||Luo; Chung-I||Configuring frame of walker|
|US5791425 *||Jun 7, 1995||Aug 11, 1998||Deka Products Limited Partnership||Control loop for transportation vehicles|
|US5937959 *||Sep 17, 1996||Aug 17, 1999||Fujii; Naoto||Conveyance apparatus|
|US5971091 *||Feb 3, 1995||Oct 26, 1999||Deka Products Limited Partnership||Transportation vehicles and methods|
|US6302230||Jun 4, 1999||Oct 16, 2001||Deka Products Limited Partnership||Personal mobility vehicles and methods|
|US6367817||Aug 10, 2000||Apr 9, 2002||Deka Products Limited Partnership||Personal mobility vehicles and methods|
|US6378883 *||Jan 11, 2000||Apr 30, 2002||Aaron J. Epstein||Motorized walker/wheelchair and method|
|US6446742 *||Aug 28, 2000||Sep 10, 2002||Robert Coburn Wilson||Wheeled platform vehicle|
|US6538411||Oct 13, 2000||Mar 25, 2003||Deka Products Limited Partnership||Deceleration control of a personal transporter|
|US6581714||Oct 13, 2000||Jun 24, 2003||Deka Products Limited Partnership||Steering control of a personal transporter|
|US6595530 *||Mar 29, 2001||Jul 22, 2003||American Healthcare Solutions, Inc.||Medical walker|
|US6651766||May 22, 2001||Nov 25, 2003||Deka Products Limited Partnership||Personal mobility vehicles and methods|
|US6659211 *||Jan 31, 2002||Dec 9, 2003||Charles Esposito||Invalid mobile cart with enclosure|
|US6749034||May 11, 2001||Jun 15, 2004||Hill-Rom Services, Inc.||Motorized traction device for a patient support|
|US6779621||Jun 13, 2003||Aug 24, 2004||Deka Products Limited Partnership||Riderless stabilization of a balancing transporter|
|US6789640||Dec 3, 2002||Sep 14, 2004||Deka Products Limited Partnership||Yaw control for a personal transporter|
|US6796396||Oct 16, 2002||Sep 28, 2004||Deka Products Limited Partnership||Personal transporter|
|US6815919||Mar 21, 2003||Nov 9, 2004||Deka Products Limited Partnership||Accelerated startup for a balancing personal vehicle|
|US6827163||Jun 12, 2003||Dec 7, 2004||Deka Products Limited Partnership||Non-linear control of a balancing vehicle|
|US6868931||Sep 23, 2003||Mar 22, 2005||Deka Products Limited Partnership||Speed limiting for a balancing transporter accounting for variations in system capability|
|US6874591||Jun 13, 2003||Apr 5, 2005||Deka Products Limited Partnership||Speed limiting for a balancing transporter|
|US6877572||Feb 20, 2004||Apr 12, 2005||Hill-Rom Services, Inc.||Motorized traction device for a patient support|
|US6915878||Jul 9, 2003||Jul 12, 2005||Deka Products Limited Partnership||Self-balancing ladder and camera dolly|
|US6965206||Dec 2, 2002||Nov 15, 2005||Deka Products Limited Partnership||Method and system for fail-safe motor operation|
|US6969079||Jul 14, 2003||Nov 29, 2005||Deka Products Limited Partnership||Multiple-passenger transporter|
|US6983813||Aug 16, 2004||Jan 10, 2006||Wright Brandi N||Remote controlled and motorized baby walker|
|US7000933||Jul 24, 2003||Feb 21, 2006||Deka Products Limited Partnership||Method for attaching a carrier to a balancing transporter|
|US7004271||May 13, 2003||Feb 28, 2006||Deka Products Limited Partnership||Dynamic balancing vehicle with a seat|
|US7014000||Jan 3, 2003||Mar 21, 2006||Hill-Rom Services, Inc.||Braking apparatus for a patient support|
|US7023330||Sep 23, 2003||Apr 4, 2006||Deka Products Limited Partnership||Transporter oscillating alarm|
|US7083012||Apr 12, 2005||Aug 1, 2006||Hill-Rom Service, Inc.||Motorized traction device for a patient support|
|US7090040||Jul 11, 2003||Aug 15, 2006||Deka Products Limited Partnership||Motion control of a transporter|
|US7090041||Feb 20, 2004||Aug 15, 2006||Hill-Rom Services, Inc.||Motorized traction device for a patient support|
|US7108090 *||Nov 5, 2002||Sep 19, 2006||Assembled Products Corporation||Motorized cart with hub gear motor system|
|US7157875||Nov 14, 2005||Jan 2, 2007||Deka Products Limited Partnership||Method and system for fail-safe motor operation|
|US7174976||Jun 3, 2005||Feb 13, 2007||Deka Products Limited Partnership||Dynamically stable transporter controlled by lean|
|US7182166||Mar 23, 2004||Feb 27, 2007||Deka Products Limited Partnership||Footrest tuck mechanism|
|US7195253||May 11, 2005||Mar 27, 2007||Hill Rom Services, Inc||Motorized traction device for a patient support|
|US7210544||Jul 11, 2003||May 1, 2007||Deka Products Limited Partnership||Control of a transporter based on attitude|
|US7273115||Jan 9, 2006||Sep 25, 2007||Hill-Rom Services, Inc.||Control apparatus for a patient support|
|US7275607||Sep 13, 2004||Oct 2, 2007||Deka Products Limited Partnership||Control of a personal transporter based on user position|
|US7370713||Jun 4, 1999||May 13, 2008||Deka Products Limited Partnership||Personal mobility vehicles and methods|
|US7407024||Mar 14, 2007||Aug 5, 2008||Hill-Rom Services, Inc.||Motorized traction device for a patient support|
|US7407175||Sep 22, 2005||Aug 5, 2008||Deka Products Limited Partnership||Multiple-passenger transporter|
|US7445217 *||Jul 19, 2007||Nov 4, 2008||Donald J Price||Walk aid|
|US7479872||Nov 1, 2005||Jan 20, 2009||Deka Products Limited Partnership||Transporter oscillating alarm|
|US7540342||Mar 17, 2003||Jun 2, 2009||Robert John Ein||Virtual walker apparatus|
|US7546889||Jun 16, 2003||Jun 16, 2009||Deka Products Limited Partnership||Guided control of a transporter|
|US7637464||Jan 11, 2007||Dec 29, 2009||Hill-Rom Services, Inc.||Patient support with mobile IV stand transport handle|
|US7690447||Sep 10, 2007||Apr 6, 2010||Deka Products Limited Partnership||Dynamic balancing vehicle with a seat|
|US7690452||Apr 6, 2010||Deka Products Limited Partnership||Vehicle control by pitch modulation|
|US7740099||Jul 9, 2007||Jun 22, 2010||Segway Inc.||Enhanced control of a transporter|
|US7757794||Dec 17, 2008||Jul 20, 2010||Segway, Inc.||Vehicle control by pitch modulation|
|US7789187||Jan 29, 2008||Sep 7, 2010||Hill-Rom Services, Inc.||Push handle with pivotable handle post|
|US7810822||Jan 11, 2007||Oct 12, 2010||Hill-Rom Services, Inc.||Stretcher having hand actuated caster braking apparatus|
|US7828092||Aug 4, 2008||Nov 9, 2010||Hill-Rom Services, Inc.||Motorized traction device for a patient support|
|US7857088||May 10, 2010||Dec 28, 2010||Segway Inc.||Enhanced control of a transporter|
|US7882582||Oct 2, 2007||Feb 8, 2011||Hill-Rom Services, Inc.||User interface and control system for powered transport device of a patient support apparatus|
|US7886377||Jan 29, 2008||Feb 15, 2011||Hill-Rom Services, Inc.||Push handle with rotatable user interface|
|US7900725||Oct 11, 2005||Mar 8, 2011||Segway Inc.||Vehicle control by pitch modulation|
|US7921953 *||May 12, 2009||Apr 12, 2011||Jgi Holdings, Llc||Personal mobility device|
|US7922183||Mar 28, 2007||Apr 12, 2011||Hill-Rom Services, Inc.||Stretcher having hand actuated wheel braking apparatus|
|US7953537||Feb 29, 2008||May 31, 2011||Hill-Rom Services, Inc.||Algorithm for power drive speed control|
|US7962256||Aug 13, 2007||Jun 14, 2011||Segway Inc.||Speed limiting in electric vehicles|
|US7979179||Aug 13, 2007||Jul 12, 2011||Segway Inc.||Apparatus and method for pitch state estimation for a vehicle|
|US8051931||Oct 28, 2010||Nov 8, 2011||Hill-Rom Services, Inc.||Motorized traction device for a patient support|
|US8056162||Dec 7, 2010||Nov 15, 2011||Hill-Rom Services, Inc.||Patient support apparatus with motorized traction control|
|US8069513||Jan 11, 2007||Dec 6, 2011||Hill-Rom Services, Inc.||Patient support apparatus having auto contour|
|US8141669 *||Feb 12, 2009||Mar 27, 2012||Laymaster Larry A||Motorized personal transporter|
|US8170780||May 1, 2012||Segway, Inc.||Apparatus and method for control of a vehicle|
|US8172023||Mar 9, 2011||May 8, 2012||Jgi Holdings, Llc||Personal mobility device|
|US8240410||Apr 24, 2009||Aug 14, 2012||Hill-Rom Services, Inc.||Patient support apparatus with powered wheel|
|US8260517||May 31, 2011||Sep 4, 2012||Hill-Rom Services, Inc.||Patient support apparatus with drive wheel speed control|
|US8267206||Sep 23, 2011||Sep 18, 2012||Hill-Rom Services, Inc.||Motorized traction device for a patient support|
|US8322477||Jun 20, 2006||Dec 4, 2012||Deka Products Limited Partnership||Motion control of a transporter|
|US8387184||Jun 7, 2011||Mar 5, 2013||Hill-Rom Services, Inc.||Auto contour handle apparatus|
|US8397846||Feb 20, 2012||Mar 19, 2013||Hill-Rom Services, Inc.||Patient support apparatus with powered wheel|
|US8467886 *||May 26, 2006||Jun 18, 2013||Sony Corporation||Mobile object apparatus, mobile object system, imaging device and method, and alerting device and method|
|US8467941||Apr 25, 2012||Jun 18, 2013||Segway, Inc.||Apparatus and method for control of a vehicle|
|US8474073||Feb 10, 2011||Jul 2, 2013||Hill-Rom Services, Inc.||User interface for power drive system of a patient support apparatus|
|US8500143 *||May 21, 2010||Aug 6, 2013||National Yang-Ming University||Walking assistance device with detection members|
|US8627909 *||May 24, 2011||Jan 14, 2014||Lg Electronics Inc.||Walking-assistant device|
|US8733719||Nov 12, 2010||May 27, 2014||Wildcard Enterprises Llc||Method and apparatus for use in management of medical intravenous pole assemblies|
|US8740240 *||Dec 23, 2013||Jun 3, 2014||Maynard I. Merel||User-operated mobility apparatus|
|US8756726||Jul 1, 2013||Jun 24, 2014||Hill-Rom Services, Inc.||User interface for power drive system of a patient support apparatus|
|US8757308||Sep 9, 2010||Jun 24, 2014||Hill-Rom Services Inc.||Powered transport system and control methods|
|US8881852 *||Sep 20, 2010||Nov 11, 2014||Woosung Tech. Co., Ltd.||Pushable frame with generators that convert kinetic energy into electric energy|
|US8910329||Feb 19, 2013||Dec 16, 2014||Hill-Rom Services, Inc.||Patient support having auto contour|
|US8967672 *||Aug 30, 2012||Mar 3, 2015||Mazda Motor Corporation||Vehicle-body structure of vehicle and manufacturing method of the same|
|US9089460 *||Mar 13, 2015||Jul 28, 2015||Murata Manufacturing Co., Ltd.||Pushcart|
|US9168966||Jun 14, 2013||Oct 27, 2015||Segway, Inc.||Apparatus and method for control of a vehicle|
|US9188984||Jul 30, 2014||Nov 17, 2015||Deka Products Limited Partnership||Control of a personal transporter based on user position|
|US20030085064 *||Nov 5, 2002||May 8, 2003||Turner Patrick E.||Motorized cart with hub gear motor system|
|US20030141832 *||Mar 21, 2003||Jul 31, 2003||Field J. Douglas||Accelerated startup for a balancing personal vehicle|
|US20030205419 *||Jun 13, 2003||Nov 6, 2003||Kamen Dean L.||Riderless stabilization of a balancing transporter|
|US20040007398 *||Jun 12, 2003||Jan 15, 2004||Burl Amsbury||Non-linear control of a balancing vehicle|
|US20040007425 *||Jul 9, 2003||Jan 15, 2004||Kamen Dean L.||Self-balancing ladder and camera dolly|
|US20040011573 *||Jun 16, 2003||Jan 22, 2004||Kamen Dean L.||Guided control of a transporter|
|US20040054634 *||Sep 27, 2001||Mar 18, 2004||Tak Seung Ho||Sale method and system employing product price varying dependent upon valid date of product|
|US20040055796 *||Jul 11, 2003||Mar 25, 2004||Dean Kamen||Motion control of a transporter|
|US20040055804 *||Sep 23, 2003||Mar 25, 2004||Kamen Dean L.||Transporter oscillating alarm|
|US20040069543 *||Jul 11, 2003||Apr 15, 2004||Kamen Dean L.||Motion control of a transporter|
|US20040118622 *||Sep 23, 2003||Jun 24, 2004||Morrell John B.||Speed limiting for a balancing transporter accounting for variations in system capability|
|US20040159473 *||Feb 20, 2004||Aug 19, 2004||Hill-Rom Services, Inc.||Motorized traction device for a patient support|
|US20040163175 *||Feb 20, 2004||Aug 26, 2004||Hill-Rom Services, Inc.||Motorized traction device for a patient support|
|US20050064998 *||Sep 22, 2003||Mar 24, 2005||Leann Hill||Passive child therapy tricycle|
|US20050121866 *||Sep 13, 2004||Jun 9, 2005||Deka Products Limited Partnership||Control of a personal transporter based on user position|
|US20050126832 *||Nov 17, 2004||Jun 16, 2005||Deka Products Limited Partnership||Non-linear control of a balancing vehicle|
|US20050211477 *||Mar 23, 2004||Sep 29, 2005||Deka Products Limited Partnership||Footrest tuck mechanism|
|US20050236193 *||Apr 12, 2005||Oct 27, 2005||Vogel John D||Motorized traction device for a patient support|
|US20050236215 *||Jun 3, 2005||Oct 27, 2005||Dean Kamen||Dynamically stable transporter controlled by lean|
|US20060011398 *||Sep 22, 2005||Jan 19, 2006||Kamen Dean L||Multiple-passenger transporter|
|US20060061460 *||Nov 1, 2005||Mar 23, 2006||Dean Kamen||Transporter oscillating alarm|
|US20060108156 *||Oct 11, 2005||May 25, 2006||Heinzmann John D||Vehicle control by pitch modulation|
|US20060108158 *||Jan 9, 2006||May 25, 2006||Kummer Joseph A||Control apparatus for a patient support|
|US20060108165 *||Oct 11, 2005||May 25, 2006||Dean Kamen||Vehicle control by pitch modulation|
|US20060125433 *||Nov 14, 2005||Jun 15, 2006||Dean Kamen||Method and system for fail-safe motor operation|
|US20060249313 *||Jun 20, 2006||Nov 9, 2006||Deka Products Limited Partnership||Motion control of a transporter|
|US20070158921 *||Mar 14, 2007||Jul 12, 2007||Vogel John D||Motorized traction device for a patient support|
|US20070176063 *||Jan 11, 2007||Aug 2, 2007||Hill-Rom Services, Inc.||Patient support with mobile iv stand transport handle|
|US20070180621 *||Jan 11, 2007||Aug 9, 2007||Hill-Rom Services, Inc.||Patient support apparatus having auto contour|
|US20070185587 *||May 26, 2006||Aug 9, 2007||Sony Corporation||Mobile object apparatus, mobile object system, imaging device and method, and alerting device and method|
|US20070216117 *||Mar 28, 2007||Sep 20, 2007||Hill-Rom Services, Inc.||Stretcher having hand actuated wheel braking apparatus|
|US20080035395 *||Sep 10, 2007||Feb 14, 2008||Deka Products Limited Partnership||Dynamic Balancing Vehicle with a Seat|
|US20080086815 *||Oct 2, 2007||Apr 17, 2008||Kappeler Ronald P||User Interface and Control System for Powered Transport Device of a Patient Support Apparatus|
|US20080141459 *||Jan 29, 2008||Jun 19, 2008||Hamberg Stephen R||Push handle with rotatable user interface|
|US20080161990 *||Aug 13, 2007||Jul 3, 2008||Segway Inc.||Apparatus and Method for Pitch State Estimation for a Vehicle|
|US20090099762 *||Dec 17, 2008||Apr 16, 2009||Segway Inc.||Vehicle Control by Pitch Modulation|
|US20090188731 *||Jul 30, 2009||Zerhusen Robert M||Push handle with pivotable handle post|
|US20090218150 *||Apr 24, 2009||Sep 3, 2009||Heimbrock Richard H||Patient support apparatus with powered wheel|
|US20100114468 *||Nov 6, 2008||May 6, 2010||Segway Inc.||Apparatus and method for control of a vehicle|
|US20100222994 *||Sep 2, 2010||Segway Inc.||Enhanced Control of a Transporter|
|US20100288575 *||Nov 18, 2010||James Graham Irvine||Personal mobility device|
|US20110035883 *||Oct 28, 2010||Feb 17, 2011||John David Vogel||Motorized traction device for a patient support|
|US20110083270 *||Sep 9, 2010||Apr 14, 2011||Bhai Aziz A||Powered transport system and control methods|
|US20110083274 *||Apr 14, 2011||Newkirk David C||Patient support apparatus with motorized traction control|
|US20110118898 *||Feb 11, 2010||May 19, 2011||National Taiwan University||Rehabilitation Device|
|US20110126354 *||Jun 2, 2011||Hamberg Stephen R||User interface for power drive system of a patient support apparatus|
|US20110166753 *||May 21, 2010||Jul 7, 2011||Chung-Huang Yu||Walking assistance device with detection members|
|US20110231075 *||Sep 22, 2011||Bhai Aziz A||Patient support apparatus with drive wheel speed control|
|US20110231997 *||Sep 29, 2011||Turner Jonathan D||Auto contour handle apparatus|
|US20120018233 *||Jan 26, 2012||Chang Yoon Young||Walking-assistant device|
|US20120187661 *||Sep 20, 2010||Jul 26, 2012||Seong Yoon Kim||Pushable frame with generators that convert kinetic energy into electric energy|
|US20150182393 *||Mar 13, 2015||Jul 2, 2015||Murata Manufacturing Co., Ltd.||Pushcart|
|CN1886111B||Sep 20, 2004||Nov 2, 2011||阿德里安·范伊登||Inter-convertible single person type transporting aid|
|EP0088035A1 *||Feb 24, 1983||Sep 7, 1983||Institut National De La Sante Et De La Recherche Medicale (Inserm)||Motorized walking-aid|
|EP1020173A2 *||Dec 3, 1999||Jul 19, 2000||MAQUET Aktiengesellschaft||Walking aid|
|EP1974706A1 *||Mar 26, 2008||Oct 1, 2008||Hill-Rom Services, Inc.||Stretcher having hand actuated wheel braking apparatus|
|EP2135593A2 *||Jan 3, 2003||Dec 23, 2009||Hill-Rom Services, Inc.||Braking apparatus for a patient support|
|EP2269552A1 *||Jan 3, 2003||Jan 5, 2011||Hill-Rom Services, Inc.||Braking apparatus for a patient support|
|EP2561849A4 *||Apr 19, 2011||Apr 29, 2015||Rosana Antunes De Sousa||Multifunctional locomotor|
|WO1988001578A1 *||Aug 24, 1987||Mar 10, 1988||Falcon Rehab Prod||Combination wheelchair and walker apparatus|
|WO1990008526A1 *||Jan 31, 1990||Aug 9, 1990||Edward John Reed||Motorised walking aid|
|WO1992006661A1 *||Sep 16, 1991||Apr 30, 1992||Etac Ab||Handbrake for wheeled vehicles|
|WO2003039937A2 *||Nov 5, 2002||May 15, 2003||Assembled Product Corp||Motorized cart with hub gear motor system|
|WO2003057126A1 *||Jan 3, 2003||Jul 17, 2003||Hill Rom Services Inc||Braking apparatus for a patient support|
|WO2015073521A3 *||Nov 12, 2014||Nov 19, 2015||New York Institute Of Technology||Motorized walker|
|U.S. Classification||180/65.6, 180/907, 297/DIG.400, 280/87.41, 297/5|
|International Classification||A61G5/04, A61G5/14, A61H3/04, B62D51/02|
|Cooperative Classification||A61G5/12, A61G5/042, B62D51/02, A61G2203/14, A61G2200/36, A61H2003/046, A61G7/1038, A61G2005/1051, A61H2003/043, A61H3/04, Y10S297/04, Y10S180/907|
|European Classification||B62D51/02, A61H3/04, A61G5/04A2|
|Apr 30, 1990||AS||Assignment|
Owner name: RETEC PR INC., PUERTO RICO
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:FALCON REHABILITATION PRODUCTS, INC.;REEL/FRAME:005281/0886
Effective date: 19881207
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:FALCON REHABILITATION PRODUCTS, INC.;REEL/FRAME:005281/0881
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:FALCON REHABILITATION PRODUCTS, INC.;REEL/FRAME:005281/0891
|Apr 30, 1990||AS02||Assignment of assignor's interest|
Owner name: FALCON REHABILITATION PRODUCTS, INC.
Effective date: 19881207
Owner name: RETEC PR, INC., MACHETE INDUSTRIAL CENTER, P.O. BO
|May 13, 1985||AS02||Assignment of assignor's interest|
Owner name: FALCON REHABILITATION PRODUCTS, INC., A CO CORP.
Owner name: FALCON RESEARCH CO.
Effective date: 19840911
|May 13, 1985||AS||Assignment|
Owner name: FALCON REHABILITATION PRODUCTS, INC., A CO CORP.
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:FALCON RESEARCH CO.;REEL/FRAME:004399/0718
Effective date: 19840911
|Sep 14, 1984||AS||Assignment|
Owner name: FALCON RESEARCH CO.,
Free format text: CHANGE OF NAME;ASSIGNOR:FALCON RESEARCH AND DEVELOPMENT CO.;REEL/FRAME:004300/0250
Effective date: 19840831
|Sep 14, 1984||AS01||Change of name|
Owner name: FALCON RESEARCH AND DEVELOPMENT CO.
Effective date: 19840831
Owner name: FALCON RESEARCH CO.,