Telescopic ram

Details Telescopic ram Telescopic ram

1975-11-24

1977-08-16

Maslousky, Paul E.

Motors: expansible chamber type

Relatively movable working members with one having motive...

Position of one working member controls motive fluid for...

91217, 91422, F01B 1502

Patent

active

040418391

ABSTRACT:
A multistage, extensible-contractible hydraulic ram assembly for use in conjunction with a triple-lift-type mast in a lift truck. The assembly is designed for mounting in such a truck in a so-called inverted position. It is constructed with special, externally actuated, internal valving which, through controlling the action of pressure fluid within the assembly, assures positive control over the sequence of movements of the sections in a mast as such are raised and lowered, without requiring latching and interlocking of these sections. Further, the assembly features the capability of producing substantially uniform or constant lifting and lowering speeds for a load which is carried on the usual carriage mounted on a mast of the type indicated.

REFERENCES:
patent: 2933070 (1960-04-01), Trumper et al.

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