Lift truck mast structure

Details Lift truck mast structure Lift truck mast structure

1987-03-23

1988-01-26

Rolla, Joseph J.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

414631, B66B 920

Patent

active

047211873

ABSTRACT:
The present invention provides an improved telescopic mast structure for a hydraulically operated lift truck. The mast structure of the present invention has reeved hydraulic hoses which do not obstruct the operators view and a chain connecting the inner and outer telescopic sections so that inner telescopic section moves at twice the speed of the outer telescopic section. This chain is located inside a U shaped channel element that forms the mast mainframe. The U shaped channel that forms the mast mainframe fits around the I shaped elements that support the two telescopic sections and the chain interconnecting the telescopic sections is in front of the I member of the outer telescopic section and alongside of the front part of the I member of the inner telescopic section. The chain interconnecting the telescopic sections is therefore in a protected location and most important it does not add any length to the vehicle.

REFERENCES:
patent: 3394778 (1968-07-01), Brinton
patent: 4657471 (1987-04-01), Shinoda et al.

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