Lift truck load handling mast

Details Lift truck load handling mast Lift truck load handling mast

1975-11-07

1977-10-04

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

187 9E, B66F 906, B66F 908

Patent

active

040519708

ABSTRACT:
A load handling mast for lift trucks including an extensible assembly of three rail sections nested together and interconnected by load supporting chains and a hydraulic rising piston and cylinder ram mounted on the middle rail section. The chains are reeved over sheaves mounted on the ram piston rod and the rail sections to provide a four to one ratio of mast extension relative to piston rod extension. The full extension and retraction of the mast and the support of the load manipulated by the mast is effected entirely through the chains and hydraulic ram without the use of a latch system.

REFERENCES:
patent: 3252545 (1966-05-01), Quayle
patent: 3462028 (1969-08-01), Pi
patent: 3715014 (1973-02-01), Ohta
patent: 3786902 (1974-01-01), Ramsey

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