IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0529731
(1995-09-18)
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발명자
/ 주소 |
- Lin Ching-Chung (5F
- No. 16
- Hong Chi Road Nei Hwu
- Taipei TWX)
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인용정보 |
피인용 횟수 :
5 인용 특허 :
1 |
초록
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A vehicle jack including a top table fixed to the bottom side of a motor vehicle, a control unit mounted on the top table, the control unit having a rotation control lever, a lifting control lever, and an extension control lever, a power unit, which includes a battery, a motor connected to the batte
A vehicle jack including a top table fixed to the bottom side of a motor vehicle, a control unit mounted on the top table, the control unit having a rotation control lever, a lifting control lever, and an extension control lever, a power unit, which includes a battery, a motor connected to the battery, an oil tank, a hydraulic oil loop, and a pump driven by the motor to pump hydraulic oil out of the oil tank into the hydraulic oil loop, a base table revolvably coupled to the top table, the base table having a driven gear fastened to the top table, a driving gear meshed with the driven gear and driven by the rotation control lever through a motor pump being coupled to the hydraulic oil loop, and three stands equiangularly pivoted to the base table, each stand having two opposite reciprocating parts reciprocated by hydraulic oil from the hydraulic oil loop through the control of the lifting control lever and extension control lever of the control unit.
대표청구항
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A vehicle jack comprising: a top table fixedly secured to a bottom of a motor vehicle, said top table comprising a center through hole, a plurality of mounting holes around said center through hole, a plurality of lugs around a border respectively fastened to the bottom of the motor vehicle, and an
A vehicle jack comprising: a top table fixedly secured to a bottom of a motor vehicle, said top table comprising a center through hole, a plurality of mounting holes around said center through hole, a plurality of lugs around a border respectively fastened to the bottom of the motor vehicle, and an annular groove on a bottom side thereof; a control unit mounted on said top table, said control unit comprising a rotation control lever, a lifting control lever, an extension control lever, and a vertical latch; a power unit, said power unit comprising a battery, a motor connected to said battery, an oil tank, a hydraulic oil loop, and a pump driven by said motor to pump hydraulic oil out of said oil tank into said hydraulic oil loop; a base table comprising an annular ball bearing race at a top side thereof around a border corresponding to the annular groove of said top table, a plurality of steel balls respectively supported on said annular ball bearing race and received within the annular groove of said top table, a plurality of equiangularly spaced lock holes for receiving said vertical latch for stopping said top table from rotary motion relative to said base table, a horizontal driven gear having a plurality of mounting holes respectively fixedly connected to the mounting holes of said top table, a vertical shaft extending from said horizontal driven gear and coupled to the center through hole of said top table, the shaft having six hydraulic oil chambers, each respectively connected to said hydraulic oil loop, a driving gear meshed with said driven gear and driven by a motor pump being coupled to said hydraulic oil chamber and controlled by said rotation control lever; and three stands each pivoted to said base table at a bottom side opposite to said top table by a respective pivot, each stand comprised of an upper part and a lower part, said upper part comprising a reciprocating oil tube coupled to a tenon on said lower part at one side of the respective pivot, said reciprocating oil tube being coupled to a first check valve through a T-pipe, and then to a four-way connector, which receives hydraulic oil from one oil chamber of said vertical shaft, and a first four-way connector for receiving hydraulic oil from one oil chamber of said vertical shaft for driving the respective reciprocating oil tube outwards, said lower part comprising a hydraulic cylinder retracted by hydraulic oil from a T-connector, which is coupled to a distribution valve through a second check valve, said distribution valve receiving hydraulic oil from one oil chamber of said vertical shaft, said lower part being extended by hydraulic oil from a second four-way connector, which is coupled to one oil chamber of said vertical shaft, whereby the reciprocating operation of the upper parts of said stands are controlled by said lifting control lever, the reciprocating operation of the lower parts of said stands are controlled by said extension control lever.
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