IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0714628
(1996-09-16)
|
발명자
/ 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
8 인용 특허 :
3 |
초록
▼
A safety vehicle lift having a unitary base, a lifting assembly, a drive mechanism, a handle, and a ramp. The base is made of flat rigid construction. The lifting assembly has a lower portion secured to the rear part of the base, a support platform above the lower portion, and cross-linkage elements
A safety vehicle lift having a unitary base, a lifting assembly, a drive mechanism, a handle, and a ramp. The base is made of flat rigid construction. The lifting assembly has a lower portion secured to the rear part of the base, a support platform above the lower portion, and cross-linkage elements connecting the lower portion and the support platform in a scissors-like configuration. The support base has side walls, a front end with an upturned edge, and a rear end with an upturned wall. The cross-linkage elements have pivotable ends secured to the rearward parts of the lower portion and the support platform. Each cross-linkage element is made of two bars coupled together. The cross-linkage elements also have ends secured within horizontally disposed recesses within the lower portion and the support platform. A drive mechanism is made up of a jackscrew passing through a threaded cross brace. When the jackscrew is turned, the threaded cross brace moves horizontally. The ends of the cross brace are connected with the horizontally shiftable ends of the cross-linkage elements and move along the horizontally disposed recess of the lower portion, and when the jack screw is turned, there is a resulting raising and lowering of the support platform. The cross brace is coupled to guide rollers which roll along the base upon axial movement of the cross brace and which provide more even lift when only one side of the vehicle is being raised. The lift has a handle for turning the jackscrew. The lift is provided with a ramp having side walls and leading from the level of the unitary base to the level of the support base.
대표청구항
▼
[ I claim:] [1.] A safety vehicle lift comprising:(a) a unitary base of a flat rigid construction having parallel side edges and having parallel front and rear edges;(b) a lifting assembly comprising (i) a lower portion secured to the base between the side edges of the base and adjacent to the rear
[ I claim:] [1.] A safety vehicle lift comprising:(a) a unitary base of a flat rigid construction having parallel side edges and having parallel front and rear edges;(b) a lifting assembly comprising (i) a lower portion secured to the base between the side edges of the base and adjacent to the rear edge of the base, (ii) a support platform positioned above the lower portion, (iii) crosslinkage elements coupling the support platform and the lower portion in a scissors-like configuration, the lower portion and the support platform having a similar width and length, the lower portion and the support platform each having front, rear, and side edges, the lower portion and the support platform each having horizontally disposed recesses in the side edges thereof, the support platform having a rearward end with an upturned wall, a forward end with an upturned edge, and two side edges with upturned walls, each crosslinkage element comprising two bars coupled together, the crosslinkage elements having two pivotable ends, one of the pivotable ends being secured to the lower portion and another of the pivotable ends being secured to the support platform, each pivotable end further being adjacent to the rearward end of the base, the crosslinkage elements further having axially shiftable ends moveably secured to a respective horizontally disposed recess for parallel movement within the lower portion and the support platform, the crosslinkage element being secured by the axially shiftable ends;(c) a drive mechanism operatively coupled to the crosslinkage elements, the drive mechanism including (i) a jackscrew with a threaded exterior surface (ii) a cross brace with a threaded interior aperture centrally thereof coupled to the jackscrew, the cross brace having opposite ends secured to the axially shiftable ends of the crosslinkage elements within the lower portion for linear movement thereof parallel with the lower portion to effect the raising and lowering of the support platform to raised and lowered positions while maintaining its parallelism with the lower portion the opposite ends of the cross brace being coupled to guide rollers which roll along the base upon axial movement of the cross brace;(d) a rotatable handle having an interior end and an exterior end and being coupled at its interior end to the jackscrew to effect the desired movement of the support platform; and(e) a ramp having side edges, a lower end near the front edge of the base and a raised end at an intermediate portion of the base between the front edge and the rear edge of the base and being adjacent to the front edge of the support platform, the lower end and the raised end of the ramp being integral with the base, the ramp having a shallow incline relative to the base, the raised end of the ramp being of the same height as the support platform when the support platform is in its lowered position, and the side edges of the ramp having upturned walls.
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