[특허]Mobile trailer hitching apparatus

Nelson,Larry

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특허 상세정보

MyON담기

내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Mobile trailer hitching apparatus

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B62D-051/04 B62D-051/00
미국특허분류(USC)	180/013; 180/019.1
출원번호	US-0902730 (2004-07-29)
등록번호	US-7451841 (2008-11-18)
발명자 / 주소	Nelson,Larry
출원인 / 주소	Nelson,Larry
대리인 / 주소	Baker Donelson Bearman Caldwell & Berkowitz, PC
인용정보	피인용 횟수 : 10 인용 특허 : 12

초록

A trailer loading or hitching device for moving a trailer between a storage position and attachment of a tongue of the trailer to a tow vehicle, comprising a vertical lifting column selectively extendable and retractable by a mover and pivotally connected to a drive wheel chassis by a mount for a steering shaft operatively engaged to the lifting column, the drive wheel chassis having opposing drive wheels selectively operable for moving the chassis.

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What is claimed is: 1. A trailer loading device for moving a trailer between a storage position and attachment of a tongue of a trailer to a tow vehicle, comprising a vertical lifting column selectively extendable and retractable by a mover, said vertical lifting column having a steering shaft at a lower end, said vertical lifting column rotatably connected to a chassis by a mount that receives a portion of the steering shaft, the chassis having opposing drive wheels selectively operable by a first actuator and a second actuator for moving the chassis. 2. The trailer loading device as recited in claim 1, wherein the chassis comprises a pair of plates interconnected by transverse support members. 3. The trailer loading device as recited in claim 2, wherein the first and second actuator each attach to a respective one of the pair of plates and operatively engage a respective one of the drive wheels for selective rotation thereof. 4. The trailer loading device as recited in claim 3, wherein the mount for the steering shaft connects to the chassis by a pin extending between the transverse support members. 5. The trailer loading device as recited in claim 1, wherein the vertical lifting column comprises an inner member received in an outer member for relative movement therebetween. 6. The trailer loading device as recited in claim 5, wherein the inner member connects to the mount block. 7. The trailer loading device as recited in claim 5, wherein the mover connects to the inner member and to the outer member. 8. The trailer loading device as recited in claim 5, wherein the mover comprises a threaded shaft extending through a threaded bore at a distal end of the inner tubular member and operatively connected to a rotator attached to the outer tubular member for rotating the threaded shaft. 9. The trailer loading device as recited in claim 8, wherein the rotator comprises: a plate attached to the distal end of the outer tubular member; a driven gear attached to a distal end of the threaded shaft; a motor having a drive gear attached to the plate and connected operatively to the controller, with the drive gear operatively engaged to the driven gear, whereby operation of the motor causes the threaded shaft to rotate. 10. The trailer loading device as recited in claim 9, wherein the motor is electric. 11. The trailer loading device as recited in claim 5, wherein the mover comprises a hydraulic cylinder connected to a supply of hydraulic fluid and attached at opposing distal ends to the inner member and the outer member for selective extending and retracting thereof. 12. The trailer loading device as recited in claim 1, further comprising a controller for selective operation of the drive wheels and for selective operation of the traveler column. 13. The trailer loading device as recited in claim 1, wherein the first and second actuators are each an electric motor operative connected through the controller to a supply of electrical current. 14. The trailer loading device as recited in claim 13, further comprising a switch to select a direction of flow of electrical current for selectively rotating the drive wheels. 15. The trailer loading device as recited in claim 1, wherein the first and the second actuators are hydraulic motors operatively connected to a supply of hydraulic fluid. 16. The trailer loading device as recited in claim 15, further comprising a valve for selectively controlling the rotation of the hydraulic motors. 17. The trailer loading device as recited in claim 1, wherein the plates are angularly offset so that the first and second actuators are disposed in vertically offset relation. 18. The trailer loading device as recited in claim 1, further comprising a mounting bracket engaged to the vertical lifting column for attaching to a tongue of a trailer. 19. A trailer loading device for attachment to a tongue of a trailer, comprising: a pair of plates each having an actuator mount portion and a wheel support portion that define an axle bore therein, the plates interconnected by transverse support members; a first and second actuator, each attached to a respective one of the plates in the actuator mount portion; a pair of opposing drive wheels, each mounted on an axle extending from the axle bore of the plates and each operatively engaged to a respective one of the actuators; a steering shaft having a base portion mounted on a pin extending between the transverse plates and an extending cylindrical coupler; a mount block that receives the coupler; means for rotating the base portion relative to the mount block; a telescopically extendable member having an inner tubular member received in an outer tubular member for relative movement therebetween, the inner tubular member attached at a first end to the mount block; a mover operatively engaged to the inner tubular member and the outer tubular member; and a controller operatively connected to the first and second actuators for selective movement of the drive wheels and to the mover for selective extending and retracting of the outer tubular member relative to the inner tubular member. 20. The trailer loading device as recited in claim 19, wherein the mover comprises a threaded shaft extending through a threaded bore at a distal end of the inner tubular member and operatively connected to a rotator attached to the outer tubular member for rotating the threaded shaft. 21. The trailer loading device as recited in claim 20, wherein the rotator comprises: a plate attached to the distal end of the outer tubular member; a driven gear attached to a distal end of the threaded shaft; a motor having a drive gear attached to the plate and connected operatively to the controller, with the drive gear operatively engaged to the driven gear, whereby operation of the motor causes the threaded shaft to rotate. 22. The trailer loading device as recited in claim 19, wherein the mover comprises a hydraulic cylinder connected to a supply of hydraulic fluid and attached at opposing distal ends to the inner tubular member and the outer tubular member for selective extension and retracting thereof. 23. The trailer loading device as recited in claim 19, wherein the first and the second actuator are each an electric motor operative connected through the controller to a supply of electrical current. 24. The trailer loading device as recited in claim 23, further comprising a switch to select a direction of flow of electrical current for selectively rotating the drive wheels. 25. The trailer loading device as recited in claim 19, wherein the first and the second actuators are hydraulic motors operatively connected to a supply of hydraulic fluid. 26. The trailer loading device as recited in claim 25, further comprising a valve for selectively controlling the rotation of the hydraulic motors. 27. The trailer loading device as recited in claim 19, further comprising a mounting bracket engaged to the outer tubular member for attaching to a tongue of a trailer. 28. The trailer loading device as recited in claim 19, wherein the plates are angularly offset so that the first and second actuators are disposed in vertically offset relation. 29. The trailer loading device as recited in claim 19, wherein means for rotating the base portion relative to the steering shaft comprises operatively connecting the base portion to the second actuator. 30. The trailer loading device as recited in claim 19, wherein means for rotating the base portion relative to the steering shaft comprises operatively connecting the actuators for independent operation wherein one drive wheel selectively rotates at a different rate than the other drive wheel. 31. A trailer loading device providing selective travel of drive wheels and independent vertical movement thereof for attachment to a tongue of a trailer for moving the trailer between a storage place and a trailer moving vehicle, comprising: a pair of spaced-apart, angularly offset plates each having an actuator mount portion and a wheel support portion that define an axle bore therein, the plates interconnected by transverse support members; a first and second actuator each attached to a respective one of the plates in the actuator mount portion; a pair of opposing drive wheels, each mounted on an axle extending from the axle bore of the plates and operatively engaged to a respective actuator; a steering shaft having a base mounted on a pin extending between the transverse plates and an extending cylindrical coupler; a mount block that receives the coupler within a cylindrical bore for movement of the steering shaft relative to the mount block; a telescopically extendable inner member received in an outer member, the inner member attached at a first end to the mount block; a mover operatively connected to the inner member and to the outer member; and a controller operatively connected to the first and second actuators for selective movement of the drive wheels and to the mover for selective extending and retracting of the outer tubular member relative to the inner tubular member. 32. The trailer loading device as recited in claim 31, wherein the first and the second actuators are each an electric motor operatively connected through the controller to a supply of electrical current. 33. The trailer loading device as recited in claim 32, further comprising a switch for selectively directing the flow of electrical current for forward and reverse rotation of the drive wheels. 34. The trailer loading device as recited in claim 31, wherein the mover comprises a threaded shaft extending through a threaded bore at a distal end of the inner member and operatively connected to a rotator attached to the outer member for rotating the threaded shaft. 35. The trailer loading device as recited in claim 34, wherein the rotator comprises: a plate attached to the distal end of the outer member; a driven gear attached to a distal end of the threaded shaft; a motor having a drive gear attached to the plate and connected operatively to the controller, with the drive gear operatively engaged to the driven gear, whereby operation of the motor causes the threaded shaft to rotate. 36. The trailer loading device as recited in claim 31, wherein the mover comprises a hydraulic cylinder connected to a supply of hydraulic fluid and attached at opposing distal ends to the inner tubular member and the outer tubular member for selective extension and retracting thereof. 37. The trailer loading device as recited in claim 36, wherein the first and the second actuator are each an electric motor operative connected through the controller to a supply of electrical current. 38. The trailer loading device as recited in claim 37, further comprising a switch to select a direction of flow of electrical current for selectively rotating the drive wheels. 39. The trailer loading device as recited in claim 36, wherein the first and the second actuators are hydraulic motors operatively connected to a supply of hydraulic fluid. 40. The trailer loading device as recited in claim 39, further comprising a valve for selectively controlling the rotation of the hydraulic motors. 41. The trailer loading device as recited in claim 31, wherein the first and the second actuators are hydraulic motors operatively connected to a supply of hydraulic fluid. 42. The trailer loading device as recited in claim 31, further comprising a valve for selectively controlling the rotation of the hydraulic motors. 43. The trailer loading device as recited in claim 31, further comprising a mounting bracket engaged to the outer tubular member for attaching to a tongue of a trailer.

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특허 상세정보

Mobile trailer hitching apparatus

초록

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특허 상세정보

Mobile trailer hitching apparatus

초록

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이 특허에 인용된 특허 (12)

이 특허를 인용한 특허 (10)

IPC 상위 출원인

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IPC 상세정보(version : 201201)

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