Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1979-03-22
1981-06-02
Spar, Robert J.
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having specific drive means for support
414742, B66B 920
Patent
active
042706297
ABSTRACT:
A linkage system particularly for vehicle-carried lifting arrangements comprising a link (11) whose one end is pivotally connected to a link arm (10,14) at a location (13) between one end of the link arm and the other end (8) thereof, the one end being provided with a load-carrying member (3) and the other end being mounted in a horizontal guide (7) which is arranged, during a lifting or lowering operation, to guide the other end (8) of said link arm substantially linearly and horizontally. A lifting-force generating device (16), for example a hydraulic piston-cylinder arrangement, is connected with the link (11) in a manner such that, during a lifting or lowering operation, the end of the link arm having the load-carrying member can be moved vertically in a substantially straight line from a height position below the horizontal guide (7) to a height position above the guide (7) or vice versa while simultaneously moving the end (8) of the link arm mounted in the guide (7) horizontally. The other end (12) of the link is pivotally mounted on the vehicle and the hydraulic cylinder (16) is connected with the link (11) at a location (18) between the two ends thereof.
REFERENCES:
patent: 2328715 (1943-09-01), Drott
patent: 3155251 (1964-11-01), Williamson
patent: 4054185 (1977-10-01), Stedman
Noland Kenneth
Spar Robert J.
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