| 摘要 |
A floor jack for lifting a vehicle includes a first hydraulically operated lifting arm for connecting to the vehicle, a hydraulic lever to lift the first hydraulically operated lifting arm and a locking device to lock the first hydraulically operated lifting arm. The floor jack includes a side plate to cooperate with the first hydraulically operated lifting arm and the floor jack includes a biasing device to bias the locking device. The biasing device includes a spring and the floor jack includes a second hydraulically operated lifting arm. The hydraulically operated lifting arm includes a curved end, and the curved end includes notches to cooperate with the locking device.
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