| 摘要 |
A hydraulic utility lift for pick-up trucks and other vehicles consisting of a frame adapted to be mounted under the rear portion of the truck bed and carrying a lift arm operable to lift a load disposed rearwardly of said truck as said arm is pivoted from a downwardly and rearwardly inclined position to a substantially horizontal position, a hydraulic ram for pivoting said arm, and a linkage operatively connecting said ram to said arm, said linkage having a novel arrangement whereby it both converts horizontal movements of said ram to vertical movement lifting said arm, whereby said ram may be elevated to preserve better ground clearance for said lift, and also provides a more uniform power ratio for said ram, permitting economies in the design of said ram.
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