CA2146541C - Waterblown foam base - Google Patents
Waterblown foam baseInfo
- Publication number
- CA2146541C CA2146541C CA002146541A CA2146541A CA2146541C CA 2146541 C CA2146541 C CA 2146541C CA 002146541 A CA002146541 A CA 002146541A CA 2146541 A CA2146541 A CA 2146541A CA 2146541 C CA2146541 C CA 2146541C
- Authority
- CA
- Canada
- Prior art keywords
- base
- hollowed out
- raised
- ribs
- rear portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
- A47C27/18—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays in combination with inflatable bodies
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
- A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
- A47C27/142—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with projections, depressions or cavities
- A47C27/146—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with projections, depressions or cavities on the outside surface of the mattress or cushion
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C4/00—Foldable, collapsible or dismountable chairs
- A47C4/54—Inflatable chairs
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/02—Seat parts
- A47C7/029—Seat parts of non-adjustable shape adapted to a user contour or ergonomic seating positions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/1043—Cushions specially adapted for wheelchairs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/1043—Cushions specially adapted for wheelchairs
- A61G5/1045—Cushions specially adapted for wheelchairs for the seat portion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/1091—Cushions, seats or abduction devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/05—Parts, details or accessories of beds
- A61G7/057—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor
- A61G7/05715—Arrangements for preventing bed-sores or for supporting patients with burns, e.g. mattresses specially adapted therefor with modular blocks, or inserts, with layers of different material
Abstract
A waterblown urethane foam base (10) having a flat seat portion (11) and a raised front portion (13) with angularly direct-ed valleys (22) and a raised pommel (20). The area beneath the front portion (13) is made more flexible and reduced in weight and is defined by a series of hollowed out areas (26, 27) separated by ribs (28) which support the top surface of the front portion (13) along with the front (29) and side walls (30) of the front portion (13).
Description
i, ~3ackqround sf the Inv~nt i on This invention relate~3 in general to cushions for seating, and, more particularly, to a modular wheelchair cushion having a shaped waterblown foam base.
The foamed base is adaptable for use with pads with upstanding air cells such as those shown in Graebe U. S . Pat .
No. 4,541,136, preinflated cells as shown in Graebe U.S. Pat.
No. 5,152,023, the hollow dome shaped pads shown in Sias, et al, U.S. Patent Nos. 4,673,305, 4,605,582 and U.S. Des. Pat.
294,212 "T-foamn, molded domes, or arch elements as shown in Graebe U. S . Pat . No . 4, 713, 854 .
The base of this invention also can be used with the cover shown in Graebe U.S. Patent No. 5,111,544.
The inventor has already developed a f luorocarbon blown base wherein a skin is created on the molded surfaces, which gives the base rigidity and firmness ;nf~d with its being light in weight because a low density composition can be used.
The skin that forms on the outer surface gives stability even to a lightweight low density product.
However, environn~f~n~l standards now require that no fluorocarbons be used in making foamed plastic parts. Therefora, water based blowing agents must now be used. These generate Co~ a~ the blowing agent which is not as harmful to the environment as the fluorocarbons. Unfortunately, Co~ blown foam *
~ 2146541 does not have an outer skin and therefore i5 relatively more flexible and less stable than fluorocarbon blown foam of the same density.
It therefore is a primary object of the present invention to provide a waterblown urethane foam cushion base which is relatively light in weight and still has t:he required rigidity and soft feel to the user .
Summary of the Invention The present invention comprises a waterblown urethane cushion base is light in weight and has a soft feel to the user while still retaining resistance to buckling when the useer is seated thereon .
These and other objects and advantages will become apparent herelnafter.
Description of the Drawings Fig. 1 is a top perspective view of the cushion of this invention;
Fig. 2 is a side elevational view;
Fig. 3 is a bottom plan view;
Fig . 4 i s a sectional view talcen alon~ line 4-4 of Fig. 3;
Fig. 5 is a sectional view taken along line 5-5 of Fig. 3; and Fig. 6 is a bottom plan view of a modification of this invention.
Detailed Description The shaped molded base 10 is shown in Fig. 1 and comprises a flat rear area 11 which has ., 1 :
- 3 - ~46~4'~
s~bstantially the same thickness from side-to-side and front-to-back The flat rear section 11 is designed to acSommodate a resilient pad of the type shown in Graebe U S Pat ~o 4,541,136, or any other suitable pad hereinbefore described. A sloped connecting area 12 connects the flat rear area ll with a raised front area 13. The connecting area 12 is shown in Figs 2, 4 and 5 and is designed to force support to the thighs and relieves pressure on the ischia and the trochanters It also provides a flat surface which accom~odates the genitals of a male user. The base 10 also includes an inwardly inclined front face 14 (Figs 2, 4 and 5). The top surface 15 of the front area 13 joins the front face 14 in a curved surface 16 which is designed to prevent damage to the legs of the user The front area 13 includes a raised pommel 20 which is higher than curved side or thigh supporting areas 21. Between the pommel 20 and the side areas 21 are aish shapea leg retaining valleys 22 which are angularly inclined out~ardly away from the rear base area 11 along the lines X-X in Fig. 1 so as to separate the legs in conjunction with the pommel 20.
This outward~y inclination of the legs tenas to retain the hip joints in place, especially with atrophiea patients As a patient's body atrophies, ei ther from age or non-use, the muscles and tendons requirea to keep the hip joint together, tend to waste away, and thus, with those patients most likely to require a wheelchair paa of this type, it is important that the legs be positioned as to urge the thigh bone into the hip socket and restrain the hip joint socket from being dislocated The curved thigh supporting areas 21 are sloped inwardly from the outer side edge to provide the I
- ~ - 2l 46541 proper thigh loading characteristics without causing too ~uch pressure o~ ~he thighs The raisea pommel 20 separates the legs, stabiLizes the pelvis and helps keep the user from sliaing out of his seat.
The base 10 is formed of foamea polyurethane and may have various indent densities based on the needs of the user However, it is not formed with a f:Luorocarbon blowing ~gent and thus does not have a skin on the outer surface. It is blown with a water based blowing agent and, although it can be washed and sterilized and is resistant to moisture and chemicals, it needs to be more dense to provide the same properties as the fluorocarbon blown urethane.
Thus, the interior structure of the present base 10 is modified to provide the same weight and patient feel characteristics as the fluorocarbon blown urethanes. Figs. 6 is a perspective view o a slightly modified underside~ of the base 10 It shows the bottom surface :~5, which beneath the front area 13 has hollowed out outer sections 26 and a hollowed out center section 27. The hollowed out center area 27 provides a softer feel for the user as well as providing some relief for the genitals of the male user It also reduces the weight of the cushion.
The side hollowed out areas 26 also provide cushion weight relief and gives a softer feel to the legs of the user Separating the cavities 26,27 are walls or ribs 28 which provide top to bottom support, and prevent the collapse of the front area 13. A front wall 29 and side walls 30 complete the structure of the base front area 13. The front wall 29 keeps the front edge from buckling from the weight of the user and the side walls 30 do the same for the side edges of the front area 13 ~
wo 94/la878 PCr/US93S10626 Z14654f The width of the front wall 29, the side walls 30 and the ribs 28 are relative to the width of the base 10. The widths may vary slightly, but, in general, they are about 1" for 16-18" bases, and about 1/2" for 8-9" bases. For bases of intermediate widths, the wall thickness varies between about 1/2"
to about 1 " .
Openings 35 are provided through the sloped connecting area 12 to ~c =~te inflating nozzles and valves, if an inflatable pad is used on the flat area ll. These may communicate with a hollowed out area 36 in the side walls 30 as shown in Fig. 5, or may communicate with the side cavities 26 as shown in Fig. 6. Access to the front wall 14 may be had through ports 37 therein, if desired. This will allow the user to inflate an inflatable pad while seated on the cushion. The ports 35,37 also allow pressures or temperatures of the patient to be mea6ured from beneath a pad positioned on the flat area 11.
This invention is intended to cover all changes and modifications of the example of the invention herein chosen for purposes of the disclosure which do not constitute departures from the spirit and scope of the invention.
The foamed base is adaptable for use with pads with upstanding air cells such as those shown in Graebe U. S . Pat .
No. 4,541,136, preinflated cells as shown in Graebe U.S. Pat.
No. 5,152,023, the hollow dome shaped pads shown in Sias, et al, U.S. Patent Nos. 4,673,305, 4,605,582 and U.S. Des. Pat.
294,212 "T-foamn, molded domes, or arch elements as shown in Graebe U. S . Pat . No . 4, 713, 854 .
The base of this invention also can be used with the cover shown in Graebe U.S. Patent No. 5,111,544.
The inventor has already developed a f luorocarbon blown base wherein a skin is created on the molded surfaces, which gives the base rigidity and firmness ;nf~d with its being light in weight because a low density composition can be used.
The skin that forms on the outer surface gives stability even to a lightweight low density product.
However, environn~f~n~l standards now require that no fluorocarbons be used in making foamed plastic parts. Therefora, water based blowing agents must now be used. These generate Co~ a~ the blowing agent which is not as harmful to the environment as the fluorocarbons. Unfortunately, Co~ blown foam *
~ 2146541 does not have an outer skin and therefore i5 relatively more flexible and less stable than fluorocarbon blown foam of the same density.
It therefore is a primary object of the present invention to provide a waterblown urethane foam cushion base which is relatively light in weight and still has t:he required rigidity and soft feel to the user .
Summary of the Invention The present invention comprises a waterblown urethane cushion base is light in weight and has a soft feel to the user while still retaining resistance to buckling when the useer is seated thereon .
These and other objects and advantages will become apparent herelnafter.
Description of the Drawings Fig. 1 is a top perspective view of the cushion of this invention;
Fig. 2 is a side elevational view;
Fig. 3 is a bottom plan view;
Fig . 4 i s a sectional view talcen alon~ line 4-4 of Fig. 3;
Fig. 5 is a sectional view taken along line 5-5 of Fig. 3; and Fig. 6 is a bottom plan view of a modification of this invention.
Detailed Description The shaped molded base 10 is shown in Fig. 1 and comprises a flat rear area 11 which has ., 1 :
- 3 - ~46~4'~
s~bstantially the same thickness from side-to-side and front-to-back The flat rear section 11 is designed to acSommodate a resilient pad of the type shown in Graebe U S Pat ~o 4,541,136, or any other suitable pad hereinbefore described. A sloped connecting area 12 connects the flat rear area ll with a raised front area 13. The connecting area 12 is shown in Figs 2, 4 and 5 and is designed to force support to the thighs and relieves pressure on the ischia and the trochanters It also provides a flat surface which accom~odates the genitals of a male user. The base 10 also includes an inwardly inclined front face 14 (Figs 2, 4 and 5). The top surface 15 of the front area 13 joins the front face 14 in a curved surface 16 which is designed to prevent damage to the legs of the user The front area 13 includes a raised pommel 20 which is higher than curved side or thigh supporting areas 21. Between the pommel 20 and the side areas 21 are aish shapea leg retaining valleys 22 which are angularly inclined out~ardly away from the rear base area 11 along the lines X-X in Fig. 1 so as to separate the legs in conjunction with the pommel 20.
This outward~y inclination of the legs tenas to retain the hip joints in place, especially with atrophiea patients As a patient's body atrophies, ei ther from age or non-use, the muscles and tendons requirea to keep the hip joint together, tend to waste away, and thus, with those patients most likely to require a wheelchair paa of this type, it is important that the legs be positioned as to urge the thigh bone into the hip socket and restrain the hip joint socket from being dislocated The curved thigh supporting areas 21 are sloped inwardly from the outer side edge to provide the I
- ~ - 2l 46541 proper thigh loading characteristics without causing too ~uch pressure o~ ~he thighs The raisea pommel 20 separates the legs, stabiLizes the pelvis and helps keep the user from sliaing out of his seat.
The base 10 is formed of foamea polyurethane and may have various indent densities based on the needs of the user However, it is not formed with a f:Luorocarbon blowing ~gent and thus does not have a skin on the outer surface. It is blown with a water based blowing agent and, although it can be washed and sterilized and is resistant to moisture and chemicals, it needs to be more dense to provide the same properties as the fluorocarbon blown urethane.
Thus, the interior structure of the present base 10 is modified to provide the same weight and patient feel characteristics as the fluorocarbon blown urethanes. Figs. 6 is a perspective view o a slightly modified underside~ of the base 10 It shows the bottom surface :~5, which beneath the front area 13 has hollowed out outer sections 26 and a hollowed out center section 27. The hollowed out center area 27 provides a softer feel for the user as well as providing some relief for the genitals of the male user It also reduces the weight of the cushion.
The side hollowed out areas 26 also provide cushion weight relief and gives a softer feel to the legs of the user Separating the cavities 26,27 are walls or ribs 28 which provide top to bottom support, and prevent the collapse of the front area 13. A front wall 29 and side walls 30 complete the structure of the base front area 13. The front wall 29 keeps the front edge from buckling from the weight of the user and the side walls 30 do the same for the side edges of the front area 13 ~
wo 94/la878 PCr/US93S10626 Z14654f The width of the front wall 29, the side walls 30 and the ribs 28 are relative to the width of the base 10. The widths may vary slightly, but, in general, they are about 1" for 16-18" bases, and about 1/2" for 8-9" bases. For bases of intermediate widths, the wall thickness varies between about 1/2"
to about 1 " .
Openings 35 are provided through the sloped connecting area 12 to ~c =~te inflating nozzles and valves, if an inflatable pad is used on the flat area ll. These may communicate with a hollowed out area 36 in the side walls 30 as shown in Fig. 5, or may communicate with the side cavities 26 as shown in Fig. 6. Access to the front wall 14 may be had through ports 37 therein, if desired. This will allow the user to inflate an inflatable pad while seated on the cushion. The ports 35,37 also allow pressures or temperatures of the patient to be mea6ured from beneath a pad positioned on the flat area 11.
This invention is intended to cover all changes and modifications of the example of the invention herein chosen for purposes of the disclosure which do not constitute departures from the spirit and scope of the invention.
Claims (7)
1. A shaped base made from expanded foam having (a) top and bottom surfaces, (b) a substantially flat rear portion to accommodate the buttocks of a user, said rear portion having a lateral edge which defines the back edge of the base, (c) a raised front portion having a central pommel to separate the legs and curved depressed areas adjacent to the pommel to accommodate the legs of the user, (d) raised side edges to load the thighs, (e) an angularly inclined stepdown section connecting the flat rear portion and the raised front portion to force support to the thighs and relieve pressure to the ischia and trochanters, and (f) the raised front portion being hollowed out to define front and side walls and provided with intermediate spaced ribs which with the front and side walls support the top surface, (g) the rear portion extending from the back edge of the base to the stepdown section and completely across the base from side-to-side, said rear portion being of substantially uniform thickness throughout.
2. The base of claim 1 wherein the ribs and the front and side walls are substantially the same widths.
3. The base of claim 2 wherein there are two intermediate ribs substantially equally spaced between the side walls to divide the hollowed out area into three substantially equal segments longer than they are wide.
4. The base of claim 1 wherein the depressed leg areas of the front portion are angularly inclined in a diverging direction toward the front of the base.
5. The base of claim 1 wherein the side and front walls and the ribs are about 1/2" to about 1"
in thickness.
in thickness.
6. The base of claim 1 wherein the front wall inclines from the bottom surface inwardly toward the top.
7. The base of claim 1 including a port in the front wall of the hollowed out portion and a second port in top surface of the base to allow access to the top of the base through the hollowed out portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US975,848 | 1992-11-13 | ||
| US07/975,848 US5317773A (en) | 1992-02-20 | 1992-11-13 | Waterblown foam base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2146541C true CA2146541C (en) | 1996-12-10 |
Family
ID=25523481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002146541A Expired - Fee Related CA2146541C (en) | 1992-11-13 | 1993-11-05 | Waterblown foam base |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5317773A (en) |
| EP (1) | EP0724395B1 (en) |
| JP (1) | JP3534317B2 (en) |
| CA (1) | CA2146541C (en) |
| DE (1) | DE69320658T2 (en) |
| ES (1) | ES2121600T3 (en) |
| WO (1) | WO1994010878A1 (en) |
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| US5617595A (en) * | 1989-12-04 | 1997-04-08 | Supracor Systems Corporation | Contoured seat cushion comprised of honeycomb cores |
| WO1993016622A1 (en) * | 1992-02-20 | 1993-09-02 | Graebe Robert H | Modular cushion construction with foamed base |
| US5613257A (en) * | 1992-02-20 | 1997-03-25 | Graebe; Robert H. | Modular cushion construction with detachable pommel |
| US5352023A (en) * | 1992-09-16 | 1994-10-04 | Jay Medical, Ltd. | Seating and back systems for a wheelchair |
| US5442823A (en) * | 1993-01-06 | 1995-08-22 | Invacare Corporation | Wheelchair cushion utilizing foams of different stiffnesses |
| US5402545A (en) * | 1994-04-05 | 1995-04-04 | Jolley; B. Jeffrey | Orthopedic seat cushion with upstanding projections |
| CA2159921A1 (en) * | 1995-09-18 | 1997-03-19 | David Harding | Cushion element for use in a wheelchair |
| SE515003C2 (en) | 1995-09-21 | 2001-05-28 | Yrjoe Rinne | Chair |
| AUPP157098A0 (en) * | 1998-02-02 | 1998-02-19 | Heygarth South Pty Ltd | Ergonomic seat with inclined femoral portion |
| US6010183A (en) * | 1998-04-07 | 2000-01-04 | Perkins; David Scott | Hunting seat for inclined surfaces |
| US6158806A (en) * | 1998-07-24 | 2000-12-12 | White; Thomas H. | Bicycle seat assembly |
| US6564407B1 (en) * | 2002-02-09 | 2003-05-20 | Tom Tho-Truong Luu | Travel pillow for accomodating the thighs of a seated user |
| US6901617B2 (en) | 2002-05-06 | 2005-06-07 | Roho, Inc. | Multi-layer cushion and cover |
| RU2306837C2 (en) | 2002-05-24 | 2007-09-27 | Темпур Уорлд, Ллс. | Cushion and methods of its production |
| US6829799B2 (en) | 2003-04-04 | 2004-12-14 | Paul J. Kuhn | Ischial tuberosity pressure relief cushion |
| US20050017565A1 (en) * | 2003-07-22 | 2005-01-27 | Sprouse Anthony Eric | Office chair with inflatable cellular insert |
| US20050151410A1 (en) * | 2003-07-22 | 2005-07-14 | Sprouse Anthony E.Ii | Chair with inflatable cellular insert |
| US7140057B2 (en) * | 2003-07-28 | 2006-11-28 | Aspen Seating, Llc | Reinforced and adjustable contoured seat cushion and method of reinforcing and adjusting the contoured seat cushion |
| US7220376B2 (en) | 2003-07-28 | 2007-05-22 | Aspen Seating, Llc | Individually-contoured seat cushion and shape capturing and fabricating method for seat cushion |
| US7216388B2 (en) * | 2003-07-28 | 2007-05-15 | Aspen Seating, Llc | Contoured seat cushion and method for offloading pressure from skeletal bone prominences and encouraging proper postural alignment |
| US6990744B2 (en) * | 2003-07-28 | 2006-01-31 | Aspen Seating, Llc | Apparatus and method for evaluating clearance from a contoured seat cushion |
| US7373678B2 (en) | 2003-07-28 | 2008-05-20 | Aspen Seating, Llc | Seat cushion with adjustable contour and method of adjusting the contour of a seat cushion |
| US7396078B2 (en) * | 2004-02-05 | 2008-07-08 | Wenger Corporation | Music posture chair |
| JP4545455B2 (en) * | 2004-02-26 | 2010-09-15 | アキレス株式会社 | cushion |
| JP4531453B2 (en) * | 2004-06-16 | 2010-08-25 | アキレス株式会社 | Cushion mat for upper body |
| US8656537B2 (en) | 2006-04-20 | 2014-02-25 | Dan Foam Aps | Multi-component pillow and method of manufacturing and assembling same |
| ES2347745B1 (en) * | 2008-06-09 | 2011-09-14 | Jorge Oyanedel Neira | SEAT TO RELIEF BACK PAIN, PREVENT PROSTATIC INFLAMMATION AND PREVENT VENOUS STATISIS IN A SITTING POSITION. |
| AU2011375705A1 (en) * | 2011-09-03 | 2014-04-10 | Loan Pham Thi Kim | An orthopedic chair for treatment and prevention of spinal diseases |
| CN103889277A (en) * | 2011-10-23 | 2014-06-25 | 枡井祥光 | Sitting tool and chair |
| US8739336B2 (en) * | 2012-05-06 | 2014-06-03 | John Kiefer | Inclined body positioning and support system |
| WO2014027221A1 (en) * | 2012-08-15 | 2014-02-20 | Kim Thi Pham Loan | A sitting device for prevention of spinal diseases |
| US9468307B2 (en) | 2012-09-05 | 2016-10-18 | Stryker Corporation | Inflatable mattress and control methods |
| DE102012019494A1 (en) | 2012-10-01 | 2014-04-17 | Adeor Medical AG | Coupling mechanism for head holder, particularly for fixing patients head in certain position of patient, has angle bar with variably adjustable and movable table- and head holder adapters, which are arranged on opposite sides of angle-bar |
| US20150015050A1 (en) * | 2013-02-25 | 2015-01-15 | Carol N. Van Zandt | Seat Cushion |
| EP3019369A1 (en) * | 2013-07-09 | 2016-05-18 | Simon Dickinson | Improvements to structure to resist impact |
| JP6438210B2 (en) * | 2014-04-09 | 2018-12-12 | 株式会社タチエス | Vehicle seat |
| USD798634S1 (en) | 2016-08-26 | 2017-10-03 | Airhawk International, Llc | Air cushion |
| US10646049B2 (en) | 2017-10-31 | 2020-05-12 | Airhawk International, Llc | Seat cushion |
| TWD193320S (en) * | 2017-12-15 | 2018-10-11 | 莊龍飛 | Chair |
| US10993538B1 (en) * | 2020-08-13 | 2021-05-04 | Stephen Chester Fenner | Seat apparatus for repositioning of hemorrhoids |
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| DE8708636U1 (en) * | 1987-06-22 | 1987-08-06 | Ammeraal Conveyor Belting B.V., Heerhugowaard, Nl | |
| US4783972A (en) * | 1987-10-29 | 1988-11-15 | Liquid Carbonic Corporation | N2 tunnel freezer |
| US5018790A (en) * | 1988-07-20 | 1991-05-28 | Jay Medical, Ltd. | Customized seat cushion |
| USD335235S (en) * | 1990-09-26 | 1993-05-04 | Biotech Ltd., Inc. | Wheelchair cushion |
| US5079790A (en) * | 1990-10-01 | 1992-01-14 | Pouch William H | Foam cushion for use with a wheel chair |
| US5163737A (en) * | 1991-01-29 | 1992-11-17 | The Bbj Connection | Cushion |
-
1992
- 1992-11-13 US US07/975,848 patent/US5317773A/en not_active Expired - Lifetime
-
1993
- 1993-11-05 ES ES94901267T patent/ES2121600T3/en not_active Expired - Lifetime
- 1993-11-05 WO PCT/US1993/010626 patent/WO1994010878A1/en active IP Right Grant
- 1993-11-05 DE DE69320658T patent/DE69320658T2/en not_active Expired - Fee Related
- 1993-11-05 CA CA002146541A patent/CA2146541C/en not_active Expired - Fee Related
- 1993-11-05 JP JP51221194A patent/JP3534317B2/en not_active Expired - Fee Related
- 1993-11-05 EP EP94901267A patent/EP0724395B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0724395A4 (en) | 1996-04-24 |
| ES2121600T3 (en) | 1998-12-01 |
| WO1994010878A1 (en) | 1994-05-26 |
| EP0724395A1 (en) | 1996-08-07 |
| DE69320658T2 (en) | 1999-02-11 |
| EP0724395B1 (en) | 1998-08-26 |
| US5317773A (en) | 1994-06-07 |
| DE69320658D1 (en) | 1998-10-01 |
| JP3534317B2 (en) | 2004-06-07 |
| JPH08502914A (en) | 1996-04-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |