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Publication numberUS3257756 A
Publication typeGrant
Publication dateJun 28, 1966
Filing dateDec 11, 1963
Priority dateDec 11, 1963
Publication numberUS 3257756 A, US 3257756A, US-A-3257756, US3257756 A, US3257756A
InventorsMarvin R Mealer
Original AssigneeMarvin R Mealer
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Power driven wheeled gate
US 3257756 A
Abstract  available in
Images(4)
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Claims  available in
Description  (OCR text may contain errors)

June 28, 1.966 M. R. MEALER 3,257,756

POWER DRIVEN WHEELED GATE Filed Deo. 11, 1963 4 Sheets-Sheet l Mar w'n R. Mea/er IN VEN T0 R BY gwn@ vg/M June 28, 1966 M. R. MEALl-:R 3,257,756

POWER DRIVEN WHEELED GATE Filed Dec. l1, 1965 N 4 Sheets-Shea?I 2 Marvin l?. Mea/er INVENTOR.

BY @www June 28, 1966 M. R. MEALER PowER DRIVEN WHEELED GATE 4 Sheets-Sheet 3 Filed Dec. 11, 1963 Fig. 3

Fig. 5

Marvin R. Mea/er INVENTOR.

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June 28, 1966 M. R. MEALER POWER DRIVEN WHEELED GATE 4 Sheets-Sheet 4 Filed Deo. l1, 1963 United States Patent O "ice 3,257,756 POWER DRIVEN WHEELED GATE Marvin R. Mealer, Rte. 1, Milo, Mo. Filed Dec. 11, 1963, Ser. No. 329,627 2 Claims. (Cl. 49 264) This invention relates to a novel and useful power driven wheeled gate and more specifically to a .gate construction adapted for opening and closing a drive opening formed in a fence. The gate construction of the instant invention includes a support section adapted to function as a section of fencing adjacent a drive opening in a length of fencing and movably supports a panel-like gate element for longitudinal reciprocation between extended and retracted positions closing' and opening the adjacent drive opening through the length of fencing.

The gate construction includes a reversible electric' motor supported from the gate element and operative to open and close the gate construction. A special gate actuating circuit is provided and with the circuit includes an opening circuit and a closing circuit with each circuit being provided with a pair of switch means operable to close the corresponding circuit to the reversible electric motor. In this manner, an opening switch and a closing switch may be disposed on each side of the gate construction and disposed on opposite sides of the drive or road whereby the driver of a vehicle may open the gate when approaching the latter by driving alongside and actuating the opening switch on the approach side of the gate and may close the gate after passing through the gate opening by driving alongside the closing switch on the departure side of the gate assembly.

The opening and closing circuit include opening and closing limit means respectively comprising means for opening the opening circuit upon movement of the gate element to the open position and openingl the closing circuit upon movement of the gate element to the closed position, the switch means including movable actuators normally yieldingly urged to the off position and the opening and closing circuits each including electrically actuated magnetic means for magnetically holding the switch actuators in the on positions in response to closing of the corresponding circuits.

The -main object of this invention is to provide a gate construction constructed in a manner whereby the driver of a vehicle may readily open the gate from the approach side thereof and close the gate from the departure side thereof while remaining seated in the driver seat of a vehicle.

A further object of this invention, in accordance with the immediately preceding object, is to provide a gate construction that may be readily constructed in various sizes without departing from the spirit of the instant invention and which maybe installed by the average Workman.

Still another object of this invention is to provide a gate construct-ion in accordance with the preceding objects constructed in a manner whereby the operation of the gate element between -the open and closed positions will be substantially foolproof, the actuating circuits for opening and closing the gates being automatically opened upon final movement of the gate element to the open and closed positions, respectively.

A final object of this invention to be specifically enumerated herein is to provide a gate construction in accordance with the preceding objects which will conform to conventional forms of manufacture, be of simple construction and easy to use so as to provide a -device that will be economically feasible, long lasting and relatively troublefree in operation.

These together with other objects and advantages which 3,257,756 Patented June 28, 1966 will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the ac= companying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

FIGURE 1 is a fragmentary side elevational view of a length of fence with the gate construction of the instant invention interposed therein and the gate element of the gate construction illustrated in the closed position;

FIGURE 2 is a side elevational view similar to that of FIGURE 1 but showing the gate element in the open position;

FIGURE 3 is an enlarged transverse vertical sectional view taken substantially upon the plane indicated by the section line 3 3 of FIGURE l;

FIGURE 4 is an enlarged fragmentary transverse vertical sectional View taken substantially upon the plane indicated by the section line 4 4 of FIGURE 1;

FIGURE 5 is a fragmentary longitudinal vertical sec` tional View taken substantially upon the plane indicated by the section line 5 5 of FIGURE 4;

FIGURE 6 is an enlarged fragmentary horizontal sectional view taken lsubstantially upon the plane indicated by the section line 6 6 of FIGURE l;V

FIGURE 7 is an enlarged fragmentary horizontal sectional view taken substantially upon the plane indicated by the section line 7 7 of FIGURE 2; and

FIGURE 8 is a diagrammatic view of the electric circuitry for actuating the gate assembly of the instant invention.

Referring now more specifically to the drawings the numeral 10 generally designates a fence construction including a pair of spaced upright posts 12 and 14 between which an opening 16 through the fence construction 10 is formed.

The fence construction additionally includes a pair of posts 1S and 20 which, together with the post 14, form a part of the gate assembly and the support and guide means for the movable upstanding gate section generally referred to by the reference numeral 22.

A rst upper track 24 is supported from the posts 14, 18 and 20 by means of a plurality of upright supports 26, 28- and 30 while a second track 32 is partially recessed in the ground 34 and extends from a point approximately midway between the posts 14 and 18 to the .post 12.

The gate section 22 has a lower grooved wheel 36 journaled from its free end and an upper grooved wheel 38 journaled from an upstanding arm 40 secured to the base 44 and 46 are supported from the post 14 by means of abracket 48, see FIGURE 3, on opposite sides of the horizontal member 42 for rotation about generally parallel upright axes, The guide rollers 44 and 46 rollingly engage and thereby guide along the upper horizontal member 42. In addition, a guide bar 50 is supported from the ground 34 by means of a plurality of uprights 52, 54 and 56 and is disposed alongside and generally parallels the fencing 10 disposed between the posts 14 and 20.

The base end of the gate section 22 has a pair of rollers 58 and 60 supported therefrom by means of-a bracket 62 for rotation about generally parallel upstanding axes disposed on opposite `sides of the guide bar 50 and the rollers 58 and 60 rollingly engage opposite sides of the guide bar 50 during movement of the gate section 22 between the open and closed positions.

A reversible electric motor 66 is mounted on the arm 40 and includes an Output shaft 68 having a worm gear 70 mounted on its free end. The worm gear 70 is disposed within a gearing housing 72 and is meshed with a gear wheel 74 that is mounted for rotation with an output shaft 76 journaled in the housing 72 and projecting outwardly thereof at one end. The outwardly projecting end of the output shaft 76 has a gear wheel 78 mounted thereon and the gear wheel 78 is meshed with a rack gear 8i) supported from the posts 14, 18 and 20 in any convenient manner and generally paralleling tracks 24 and 32.

With attention now directed to FIGURE 8 of the drawing it may be seen that the motor 66 includes a rst ground conductor 84, a second conductor 86 for supplying electrical potential to the motor 66 to effect its operation in one direction and a third conductor 88 for supplying electrical potential to the motor 66 to effect its operation in the opposite direction. The conductors 84, 86 and 38 are each flexible and extend from the motor 66 to an automatic winding assembly such as a spring reel 90, the ends of the conductors 84, 86 and 88 being wound about the spring reel 90 and electrically connected to the conductors 92, 94 and 96, respectively.

A plurality of actuating switches 98, 100, 102 and 104 are provided and each includes a pair of spaced terminals 106 and 108. The ground terminal 92 is connected to a suitable source of electrical potential and each of the terminals 108 has one end of a conductor 110 electrically connected thereto, the other end of the conductor 110 being connected to the aforementioned source of electrical potential and an electromagnet 112 being serially connected in each conductor 110. Each of the switches includes a manual bridging element 114 and an actuator button 116, the bridging elements each being normally urged by any convenient means to the off position opening the corresponding circuit and magnetically attractible toward the on position by the corresponding electromagnet 112. A pair of bridging elements 118- and 120 electrically connect the terminals 106 of the switches 104 and 100 to a first terminal 122 of a iirst limit switch 123. The second terminal 124 of the limit switch 123 is electrically connected to the conductor 94. A bridging element 126 carried by one end of a shank 128 mounted for horizontal longitudinal reciprocation from the rack gear 80 by means of a sleeve 130 is operable to open and close the closing circuit and to electrically connect the switches 100 and 104 to the electric motor 66 when it bridges the terminals 122 and 124. The end of the shank 128 remote from the bridging element 126 includes a laterally directed portion 132 which is slidably received in and projects through a rst horizontal slot 134 formed in the rack gear 80 for engagement by the upright 135 of the gate section 22 upon final movement of the gate section 22 to the closed position to move the bridging element 126 away from a position bridging the terminals 122 and 124.

A pair of conductors 136 and 138 electrically connect the terminals 106 of the switches 98 and 102 to the first contact or terminal 140 of a second limit switch A142, the second terminal or contact 144 of the lim-it switch i142 being electrically connected to the conductor 96.

A second bridging ele-ment `146 is carried by one end of a shank 148 corresponding to the shank 128 and is slidably received through a sleeve 150 which is also supported from the rack gear 80. The end of the shank 148 remote from the bridging element 146 includes a laterally directed end portion 152 which is slidably received in and projects through a second slot 154 formed in the rack gear 80 and engageable by the upright 136 to withdraw the bridging element `146 from engagement with the contacts or terminals 140 and l142 as the gate section 22 moves toward its fully open position thereby opening the opening circuit electrically connecting the switches 98 and 102 to the electric motor 66.

From FIGURES 6 and 7 of the drawings it may be 4 seen that the bridging element 126 is insulatively supported from the shank 128 and it is to be understood that the bridging element 146 is also insulatively supported from its supporting shank l148.

Additionally, an expansion spring 158 is connected between the laterally directed end ypor-tion y148 and the rack gear and yieldingly urges the shank 128 to a position with the bridging element 126 bridging the contacts or terminals 122 and "124. It is to be understood that the shank I148 is also provided with a similar expansion spring in order that the bridging element 146 will also be yieldingly urged toward a position electrically connecting the contacts or terminals 140 and 144.

In operation, assuming that a road passes between the switches 98 and 100 and the switches 102 and 104, as the driver approaches the closed gate section from the lower end of FIGURE 8, he may depress the actuator button 116 of the switch 98 thereby actuating the opening circuit to the elect-ric motor 66. Actuating the circuit will of course effect operation of the associated eleotromagnet 112 and thus hold the bridging element 114 in the closed position until such time as the closed gate section 22 approaches its full open position wherein the upright 135 thereof will engage the laterally directed end portion 152 and cause the bridging element 146 to be withdrawn from between the contacts or terminals 140 and 144 thereby opening the opening circuit to the motor 66, the opening of this circuit causing the electromagnet 112 of the switch 98 to be deenergized thereby enabling the bridging element 114 to ret-urn to its normal open position illustrated in FIGURE 8. Then, after the driver of the vehicle passes through the opening 16, he may engage the actuator button |116 of the switch 100 whereupon, inasmuch as the movement of t-he gate section 22 to the open position allows movement of the bridging element `126 to a position between the contacts or terminals 122 and 124, will Aclose the closing circuit to the electric motor 66 and deflect movement of the gate section 22 toward the closed position. As the gate section 22 reaches its limit of movement toward the closed position, the upright will engage the laterally directed end portion -132 of the shank 128 and withdraw the bridging element 126 from between the contacts or termin-als 122 and 124 of the limit sw-itch 123. If the driver of a vehicle is approaching the gate section 22 when it is in the closed position from the top of FIGURE 8 of the drawings, the same procedure is carried out for opening and closing the gate section 22 except that the switches 102 and 104 are utilized in lieu of the switches 98 and 100 4to open and close the gate section 22.

The'foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired Ito limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents m-ay be resorted to, Afalling within the Scope of the invention as claimed.

What is claimed as new -is as follows:

I1. A power driven gate comprising support and guide means, an upstanding gate section mounted on said support and guide means for movement between open and closed positions, reversible electric motor means operatively connected between said support and guide means and said gate section for moving said gate between said open and closed positions, opening and closing actuating switch means, opening and closing electric circuit means electrically connecting said actuating switch means to said motor means for effecting operation of said motor means in opposite directions, a pair of independently operable limit switch means operably connected between said gate section and said support and guide means and electrically disposed in the opening and closing circuit means for said opening and closing actuating means and operable to open the circuit means to said opening and closing actuating switch means upon movement of said gate section to the open and closed positions, respectively, thereby rendering the corresponding retention means inoperable to retain the associated actuator in the on position, said limit switch means comprising two pairs of spaced contacts supported from said support and guide means and serially disposed in the corresponding opening and closing circuitmeans, a pair of bridging elements movably supported from said support and guide means and shiftable thereon between closed and open positions bridging and opening the corresponding pair of spaced contacts in said opening and closing circuits, means yieldingly urging the bridging elements toward the open positions, said gate including means engageable with said bridging elements and operable to urge said bridging elements of said closing and opening circuits toward their open positions in response to movement of said gate to the closed and open positions, respectively.

2. A power driven gate comprising support and guide means, an upstanding gate section mounted on said support and guide means for movement between open and closed positions, reversible electric motor means operatively connected between said support and guide means and said gate section for moving said gate between said open and closed positions, two pairs of opening and closing actuating switch means for disposition on opposite sides of said gate when in the closed position and on opposite sides of the road leading to and extending from said gate, opening and closing electric circuit means 6 on position closing the corresponding circuit means, a pair of independently operable limit switch means operably connected between said gate section and said support and guide means and electrically disposed in the opening and closing circuit means for said opening and closing actuating means and operable to open the circuit means to said opening and closing actuating switch means upon movement of said gate section to the open and closed positions, respectively, thereby rendering the corresponding retention means inoperable to retain the associated actuator in the on position, said limit switch means comprising two pairs of spaced contacts supported from said support and guide means and serially disposed in the `corresponding opening and closing circuit means, a pair of bridging elements movably supported fromv said support and guide means and shiftable thereon between closed and open positions bridging and opening the corresponding pair of spaced contacts in said opening and closing circuits, means yieldingly urging the bridging elements toward the open positions, said gate -including means i engageable with said bridging elements and operable to urge said bridging elements of said closing and opening circuits toward their open positions in response to movement of said gate to the closed and open positions, respectively.

References Cited by the Examiner UNITED STATES PATENTS 92,524 7/1896 Goodale 39-95 1,057,547 4/1913 Heimer et al 268-53 1,478,446 12/ 1923 McNish 39-7 1,499,735 7/1924 Hynes 268-53 1,952,681 3/1934 Peelle 268-53 REINALDO P. MACHADO, Primary Examiner.

HARRISON R. MOSELEY, Examiner.

D. L. TAYLOR, Assistant Ezra/nine):y

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US92524 *Jul 13, 1869 Improvement in gates
US1057547 *Jan 22, 1912Apr 1, 1913John P HeimerDoor-operating mechanism.
US1478446 *Sep 16, 1922Dec 25, 1923Harvey McnishRailroad-crossing gate
US1499735 *Feb 21, 1919Jul 1, 1924Cons Car Heating CoCar-door-operating mechanism
US1952681 *Apr 10, 1931Mar 27, 1934Peelle Co TheOperator for horizontally sliding warehouse doors
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3775906 *Dec 28, 1971Dec 4, 1973E DoughertySliding portal and operating device therefore
US3883992 *Dec 14, 1973May 20, 1975Hennessy ProductsCar door operating structure
US4366649 *Jun 2, 1981Jan 4, 1983Weigant Frederick EAutomatic gate
US4672773 *Aug 13, 1986Jun 16, 1987Bilt Michael MMotor-operated sliding door assembly
US4783048 *Dec 17, 1987Nov 8, 1988St Clair Thomas WSlide gate damper system
US4791757 *Jul 9, 1987Dec 20, 1988Orlando Paul FRoller gate opener
US5351441 *Mar 1, 1993Oct 4, 1994Marantec Antriebs-Und Steuerungstechnik Gmbh & Co. Produktions KgSliding door
US5680729 *Feb 9, 1995Oct 28, 1997The Pickwick CorporationSystem for opening and closing a gate
US7792602Aug 22, 2007Sep 7, 2010Precision Automation, Inc.Material processing system and a material processing method including a saw station and an interface with touch screen
US8176677Feb 27, 2008May 15, 2012Blackmon Iii Baron HAutomated guide rail apparatus
Classifications
U.S. Classification49/264, 49/358, 49/362
International ClassificationE05F15/14
Cooperative ClassificationE05Y2600/46, E05Y2900/40, E05Y2201/434, E05F15/142, E05Y2201/722
European ClassificationE05F15/14D