Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1980-03-18
1981-12-29
Tollberg, Stanley H.
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having specific drive means for support
B66B 920
Patent
active
043077927
ABSTRACT:
A lock holds together two masts of a multi-stage forklift truck. A spring-loaded bolt carried by the inner mast is forced into an opening in the outer mast when the carriage is lowered to a position lower than the lowest edge of the inner mast. With the lock engaged the carriage may be raised from its lowest position without forcing the inner mast to rise from its lowest position. Once the carriage has been raised to clear the lower edge of the adjacent mast, the two masts are then unlatched. The latching mechanism allows the amount of travel of a carriage relative to the adjacent mast to be extended without movement of the adjacent mast.
REFERENCES:
patent: 3221840 (1965-12-01), Weinert
Benson Samuel L.
Jensen Louis T.
J. I. Case Company
Tollberg Stanley H.
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