Vehicle lift assembly and control system therefor

Details Vehicle lift assembly and control system therefor Vehicle lift assembly and control system therefor

B - Operations, Transporting

66

F

254/15

B66F 7/16 (2006.01) B66F 7/04 (2006.01)

Patent

CA 1117098

Abstract of the Disclosure A vehicle lift having two hydraulically operated lifting cylin- ders for adjusting the height of a pair of weights supporting carri- ages, and having a control system featuring a cable strung between the carriages for responding, through changes in tension, to a change in relative vertical displacement between the carriages to actuate a levered valve assembly for controlling the rate of fluid being sup- plied to or from each lifting cylinder to eliminate the change and restore the preferred relative displacement between the carriages. The control system deactivates the lifts and effects engagement of safety latches to lock the carriages in place in their respective frames to limit misalignment thereof in the event of a control sys- tem malfunction. A fluid shuttle valve having a perforated cylinder which is both rotatable and translatable within the valve body to control fluid flow to and from each lifting cylinder is also featur- ed. -1-

310572

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