Lift locking system

Details Lift locking system Lift locking system

1991-05-17

1992-06-09

Olszewski, Robert P.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

187 859, 187 85, 271261, B60S 1300

Patent

active

051199068

ABSTRACT:
A lift locking assembly for the vertically movable platform in a stacking apparatus includes toothed locking devices at each corner of the platform which are triggered simultaneously into engagement with correspondingly toothed racks by a triggering cable assembly attached in a manner to directly simulate movement of the platform lift chains. The triggering cables always remain taut, but become more highly loaded in tension as a result of platform movement without a corresponding movement in the lift chain or the hydraulic cylinder operating the lift chain, as a result of chain and/or hydraulic system failure. The four locking devices at the corners of the lift platform are interconnected by a common actuating linkage which may also be manually operated to separately lock the lift platform in any desired position for servicing or the like.

REFERENCES:
patent: 1958026 (1934-05-01), Walker
patent: 2238573 (1941-04-01), Steedman
patent: 2624546 (1953-01-01), Haumerson
patent: 2891636 (1959-06-01), Krieger et al.
patent: 4457401 (1984-07-01), Taylor et al.

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