Device and system for lifting a motor vehicle
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B66F-007/06
B66F-007/08
B66B-009/16
B66F-007/28
출원번호
US-0954605
(2013-07-30)
등록번호
US-9290365
(2016-03-22)
발명자
/ 주소
Polins, Kurt E.
Felpel, Glenn D.
Pavlick, Allan
출원인 / 주소
STERTIL BV
대리인 / 주소
Baker & Hostetler LLP
인용정보
피인용 횟수 :
1인용 특허 :
64
초록▼
A preferred embodiment of a system includes a lifting device for lifting a motor vehicle, a support structure for mounting the lifting device in a pit, and a carriage for supporting the lifting device from the support structure and being movable within the support structure. The system also includes
A preferred embodiment of a system includes a lifting device for lifting a motor vehicle, a support structure for mounting the lifting device in a pit, and a carriage for supporting the lifting device from the support structure and being movable within the support structure. The system also includes a cover coupled to opposite sides of the carriage so that the cover extends away from the carriage and continuously between the opposite sides of the carriage.
대표청구항▼
1. A heavy duty lift system comprising: first and second scissors, each scissor comprising at least a first, bottom, tier, a second, intermediate, tier, and a third, upper, tier, and a cylinder diagonally positioned and coupled, at one end, near the top of the first tier and, at the other end, near
1. A heavy duty lift system comprising: first and second scissors, each scissor comprising at least a first, bottom, tier, a second, intermediate, tier, and a third, upper, tier, and a cylinder diagonally positioned and coupled, at one end, near the top of the first tier and, at the other end, near the bottom of third tier, each one of the scissors capable of being located below a ground surface;a support structure capable of being located in a pit;a carriage for supporting the second scissor from the support structure and reciprocally movable within the support structure in a direction substantially perpendicular to a lift direction of the second scissor so as to allow reciprocal movement of the second scissor; and,a first cover coupled to a first side of the carriage and a second cover coupled to a second, opposing, side of the carriage, the first and second covers configured to extend away from the first and second sides, respectively, of the carriage such that the covers are configured to move reciprocally with reciprocal movement of the carriage. 2. The system of claim 1 wherein the first cover is discrete from the second cover. 3. The system of claim 1 wherein the first scissor is stationary. 4. The system of claim 2 wherein proximal ends of the first and second covers are coupled to the carriage, and distal ends of the first and second covers are spaced apart from each other so as to define a gap there between that moves with movement of the carriage. 5. The system of claim 1 wherein the lift direction is defined by vertical extended and retracted positions, and wherein, in the extended position, a major portion of the second scissor extends substantially above the support structure, and in the retracted position a substantial entirety of the second scissor is positioned inside the pit and within the support structure, and further wherein reciprocal movement of the covers includes translation in response to movement of the carriage, such that the second scissor can be moved between fully extended and fully retracted positions at any location within a full range of travel of the carriage within the support structure. 6. The system of claim 1 wherein each cover comprises a plurality of cover elements each pivotally coupled to an adjacent one of the cover elements. 7. The system of claim 6 wherein each cover element comprises a substantially rod-shaped member, and a recess for receiving the substantially rod-shaped member of the adjacent one of the cover elements. 8. The system of claim 6 wherein the each of the cover elements comprises a first major portion, a second major portion, and first and second side portions that adjoin each of the first and second major portions to form an isotropic beam. 9. The system of claim 6 further comprising a first track secured to the support structure for supporting the carriage. 10. The system of claim 9 further comprising a second track secured to the support structure below the first track, wherein the cover elements are movably disposed on the first and second tracks. 11. The system of claim 1 further comprising a motor mounted on the carriage, a drive gear assembly mounted on the carriage and coupled to the motor so that the motor drives the drive gear assembly, a gear track mounted on the support structure so that the drive gear assembly engages the gear track and the engagement of the drive gear assembly and the gear track causes the carriage to translate in relation to the support structure. 12. The system of claim 1 wherein each scissor comprises a mating assembly for engaging axles of the motor vehicle so that each scissor can engage the motor vehicle by the axles. 13. The system of claim 2 wherein the pit has a maximum below ground depth that is substantially less than the above ground height of the second scissor when the second scissor is in the extended position. 14. The system of claim 13 wherein the pit is longitudinal and has a substantially flat and level bottom along its length. 15. The system of claim 14 wherein the pit accommodates an uppermost most portion of the second scissor substantially at or below ground level when the second scissor is in the fully retracted position and the pit depth is less than half that required to accommodate a vertical hydraulic cylinder of a conventional hydraulic lift having comparable lift capacity. 16. A kit, comprising: a support structure capable of being installed in a pit so that a lower surface of the support structure rests on a floor of the pit;first and second scissors each comprising three stacked tiers, each tier comprising a member, wherein, with respect to at least two of the tiers, a width of the members varies such that at a first end of the member, the width is different than the width at a second, opposing, end of the member;leaves pivotably connected to the members, and a cylinder connected thereto;the second scissor capable of being mounted to the support structure so that the scissor can move between an extended position wherein a portion of the scissor is extends vertically above the support structure, and a retracted position wherein a substantial entirety of the second scissor is located inside the pit and within the support structure; anda carriage for supporting the second scissor, whereby upon assembly, the carriage is longitudinally movable within the support structure, and is capable of positioning the second scissor with respect to the first scissor. 17. The kit of claim 16 further comprising a first cover adapted to be coupled to a first side of the carriage and a second cover coupled to a second, opposing, side of the carriage, whereby, upon assembly, the first and second covers are configured to extend away from the first and second sides, respectively, of the carriage such that the covers are movable with movement of the carriage, the covers adapted to cover the pit along a full range of movement of the carriage. 18. The kit of claim 16 wherein the first and second scissors each comprise a mating assembly for engaging an axle of a motor vehicle so that the scissors can lift a motor vehicle by axles thereof as the scissors extend from the retracted to the extended positions. 19. The kit of claim 16 wherein each scissor has an uppermost and lowermost tier, further comprising a cylinder adapted to be coupled at one end to the lowermost tier and at the other end to the uppermost tier, actuation of the cylinder adapted to cause the scissor to extend and retract. 20. The kit of claim 16 wherein each member comprises a pair of generally parallel legs and a cross member connecting the legs at one end thereof. 21. The kit of claim 16 wherein one of the tiers is an intermediate tier, the member thereof having a constant width from one thereof to the other end thereof. 22. A device for use in a heavy vehicle lift, comprising: a base;a scissor having multiple stacked tiers including at least a lower tier and an upper tier;the lower tier including a first leg structure pivotably coupled to the base, and a first leg leaf pivotably coupled to the base and the first leg structure, the first leg structure comprising a pair of generally parallel legs and a cross member connecting the legs at one end thereof;a bolster;the upper tier including a second leg structure pivotably coupled to the bolster and a second leg leaf pivotably coupled to the bolster and the second leg structure, the second leg structure comprising a pair of generally parallel legs and a cross member connecting the legs at one end thereof, anda cylinder for actuating the tiers;wherein the lower tier is operatively coupled to the upper tier so that movement of the first leg structure in relation to the first leg leaf, and pivotal movement of the second leg structure in relation to the second leg leaf, causes the bolster to extend and retract in relation to the base, whereby the configuration of the first and second leg structures is such that the tiers form a structure that is (i) compact when in a retracted position such that the structure is suitable for being located on a carriage in a pit and (ii) capable of lifting a heavy vehicle in its extended position. 23. The device of claim 22 wherein the cylinder is coupled at one end to the lower tier, and at its opposing end to the upper tier, so that movement of a cylinder piston in relation to the cylinder causes extension and retraction of the scissor. 24. The device of claim 23 wherein the width of the legs of each leg structure is greater at one end thereof than at an opposing end thereof, and the cylinder is coupled to the upper and lower tiers proximate the wider end of the leg structures. 25. The device of claim 23 further comprising a jaw lock device having a first toothed first portion coupled to the upper tier and a second toothed portion coupled to the lower tier, such that the toothed portions cooperate to lock the scissor at selected retracted and extended positions. 26. The device of claim 25 wherein the cylinder is sandwiched by the jaw lock device. 27. A vehicle lift for a heavy vehicle, comprising: a base;a pair of scissors, each scissor comprising a cylinder and multiple tiers that include leg members that cooperate to extend and retract the tiers upon actuation of the cylinder;at least some of the leg members having a first width which changes across a length to a second width which is smaller than said first width, wherein said width change forms complementary shapes to enable a compact configuration when the lift is in a fully retracted position, wherein the lift is suitable for being carried on a carriage in a pit. 28. The vehicle lift of claim 27 wherein the first and second widths are configured such that, when the scissors are in a fully retracted position, the first width of an upper one of the legs is oriented with the second width of a lower one of the legs, whereby in the retracted position the tiers fit together in the compact configuration. 29. The vehicle lift of claim 27 wherein at least some leg members comprise a pair of generally parallel legs and a cross member connecting the legs at one end thereof. 30. The vehicle lift of claim 27 wherein each scissor comprises three tiers, and the leg members of an intermediate tier have a constant width. 31. A heavy duty lift system, comprising: first and second scissors adapted to be installed at an installation location and cooperative to lift a motor vehicle, each scissor comprising plural tiers coupled to a cylinder, each scissor having a lower portion and an uppermost portion and being movable between a fully retracted position and a fully extended position, wherein, when the scissors are in the fully retracted position, the lower portions are located below a ground level of the installation location and the uppermost portions are near the ground level, and, when the scissors are in the fully extended position, the scissors have a portion below the ground level, defining a depth of the scissors, and a portion above ground level, defining a height of the scissors, the depth of the scissors being substantially less than the height of the scissors when in the fully extended position;a support adapted to be installed in a pit;a carriage for movably supporting one of the scissors from the support so as to allow the supported scissor to travel longitudinally, in reciprocal directions, along a length of the pit, the supported scissor being fully retractable and fully extendable along the length of the pit; and,a pair of covers, each cover being coupled to opposing first and second sides of the carriage, the covers being movable with the carriage in the reciprocal directions, each cover extending longitudinally away from the carriage and fully covering the pit regardless of the location of the supporting scissor within the pit. 32. The lift system of claim 31 wherein the pit accommodates an uppermost portion of the supporting scissor substantially at or below ground level when the supporting scissor is in the fully refracted position and the pit depth is less than half that required to accommodate a vertical hydraulic cylinder of a conventional hydraulic lift having comparable lift capacity. 33. The lift system of claim 31 wherein each scissor has a lift capacity of at least approximately 30,000 pounds. 34. A heavy duty lift system comprising: first and second scissors for lifting a motor vehicle, each one of the scissors: (i) comprising tiers being actuatable to move the scissors between retracted and extended positions by a cylinder, and (ii) being capable of being located substantially at or below ground level when in the fully retracted position such at an uppermost portion of the scissor is near ground level;a support disposed in an elongated pit having less than half the depth of that required to accommodate a vertical hydraulic cylinder of a conventional hydraulically-powered lift having comparable lift capacity;a carriage supporting the second scissor from the support and being longitudinally and reciprocally movable in the pit relative to the support;a first cover coupled to a first side of the carriage and a second cover coupled to a second, opposing, side of the carriage, the first and second covers configured to extend away from the first and second sides, respectively, of the carriage such that the covers are configured to move reciprocally with reciprocal movement of the carriage and to substantially fully cover the pit regardless of the position of the carriage. 35. The system of claim 34 wherein the pit has a maximum below ground depth that is less than the above ground height of the scissor when the scissor is in the extended position. 36. The system of claim 34 wherein the lift capacity of each scissor is approximately 30,000 pounds.
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