Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having position lock for engaging sustaining drive means or...
Patent
1996-05-14
1998-09-08
Milef, Boris
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having position lock for engaging sustaining drive means or...
187359, B66B 900
Patent
active
058032061
ABSTRACT:
A hoist lifting apparatus for vehicles has a pair of spaced posts and a carriage slidably mounted for vertical movement in each post and secured to load bearing arms for supporting a vehicle. A locking assembly is pivotally mounted on each carriage for locking it in a selected, raised position. The post has a wall facing the carriage with a series of vertically spaced openings, and a locking arm pivotally mounted on the carriage is biased into successive openings as the carriage is raised. Once the desired height is reached, the carriage is lowered slightly in order to lock the arm in a selected opening. A release cam is pivotally mounted on the locking arm and acts to release the locking arm from the selected opening when the carriage is raised slightly from a locked position. A bypass member holds the locking arm in the retracted position as the carriage is lowered after release of the lock.
REFERENCES:
patent: 274770 (1883-03-01), Herrick
patent: 2266915 (1941-12-01), Steedman
patent: 2956643 (1960-10-01), Halstead
patent: 3098542 (1963-07-01), Wallace et al.
patent: 3237722 (1966-03-01), Citroen
patent: 4457401 (1984-07-01), Taylor et al.
patent: 4976336 (1990-12-01), Curran
Halstead Anthony J.
Halstead Jon S.
Milef Boris
Western Hoist, Inc.
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