Lift assembly
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 20, 1991
Grant Date -
N/A
app pub date -
Feb 16, 1990
filing date -
Feb 16, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A lift assembly includes four swing arms interconnecting a base member and lift platform. A hydraulic cylinder selectively elevates the lift platform relative to the base member. A stiff leg also extends between the base member and the lift platform and cooperates with a series of stop blocks for locking the lift platform at predetermined heights above the base member. A link is associated with the stiff leg to selectively support the stiff leg above the stop blocks and permit an operator to move the lift platform between the predetermined heights. The link automatically positions the stiff leg for engagement with the stop blocks if the direction of movement of the platform is altered.
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