Auxiliary lifting forks for double-length pallet trucks

Details Auxiliary lifting forks for double-length pallet trucks Auxiliary lifting forks for double-length pallet trucks

1996-11-25

1998-05-19

Valenza, Joseph E.

Elevator, industrial lift truck, or stationary lift for vehicle

Industrial lift truck or required component thereof

Having specific drive-means for load support

187233, 187237, 187231, B66F 922

Patent

active

057525846

ABSTRACT:
An improved pallet truck, having an extended length pair of forks capable of supporting multiple, side-by-side, pallets which may be raised well above the floor to assist an operator in an order selection operation, includes a first fork lifting mechanism connected to one end of a pair of primary forks. A pair of load wheels are mounted on levers at a other end of the forks and are mechanically connected to the first fork lifting mechanism which causes the other end of the primary forks to be raised from a lower level to an upper level simultaneously with the raising of the first end thereby to maintain the primary forks level while lifting the maximum capacity of the truck. A pair of secondary forks are mounted above the primary forks and are movable from a nested position with respect to the first forks to a raised position by a second fork lifting mechanism carried by the primary forks. The ends of the secondary forks are supported by a pair of hydraulic cylinders attached between the secondary forks and the primary forks, thus providing support and rigidity to the secondary forks while they are in a raised position.

REFERENCES:
patent: 1407124 (1922-02-01), Carr
patent: 1432299 (1922-10-01), Pleines
patent: 1497085 (1924-06-01), Brandt
patent: 2520857 (1950-08-01), Schreck
patent: 3265158 (1966-08-01), Constable
patent: 4692084 (1987-09-01), Persson
Clark Equipment Company, "Gas and Electric Fork Trucks and Industrial Towing Tractors," Dec. 19, 1949, p. 25.

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