Counterbalancing hydraulic system

Details Counterbalancing hydraulic system Counterbalancing hydraulic system

1979-10-09

1982-08-03

Cohen, Irwin C.

Excavating

Peat excavators

60475, 60476, 60486, E02F 922, F15B 1306, F15B 1309

Patent

active

043421644

ABSTRACT:
A counterbalancing hydraulic system for exerting a torque on a member such as a spud pile by means of at least two substantially identical hydraulic cylinders, piston rods of which engage the pile at a distance from one another, the pistons being subjected to pressure in opposite senses, while the portion of each cylinder remote from the piston rod communicates through a main displacer pump motor each with the portion of the other cylinder located on the side of the piston rod and the portion of each cylinder remote from the piston rod communicates through an auxiliary displacer pump motor with a medium reservoir.

REFERENCES:
patent: 890470 (1908-06-01), Taft et al.
patent: 2640323 (1953-06-01), McLeod
patent: 2716995 (1955-09-01), Baugh et al.
patent: 2940262 (1960-06-01), Pfitzenmeier
patent: 2960828 (1960-11-01), Gould
patent: 4033056 (1977-07-01), Demmers

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