Anchor torque controller for anchor installing machines

Details Anchor torque controller for anchor installing machines Anchor torque controller for anchor installing machines

1995-09-11

1996-11-05

Nguyen, Hoang

Power plants

Pressure fluid source and motor

Condition responsive control of motive fluid flow

60494, 91 59, F16D 3102

Patent

active

055705774

ABSTRACT:
A torque controller which limits the output of a hydraulic motor is provided. The torque controller includes a by-pass circuit which allows the hydraulic fluid in the hydraulic fluid circuit to by-pass the motor. A valve manifold is placed in the by-pass and includes a main chamber having a main valve member and one (and preferably two or more) poppet valves in communication with the main chamber. The pressure at which the poppet valves and the main valve open are individually adjustable and are set for different pressures. Inlets to the poppet valves are closed with electrically operated solenoids such that the inlet to a selected poppet valve can be opened to activate that poppet valve.

REFERENCES:
patent: 3785157 (1974-01-01), Kittle et al.
patent: 3890788 (1975-06-01), Habiger
patent: 4362018 (1982-12-01), Torii
patent: 4644748 (1987-02-01), Goss, Jr. et al.
patent: 4850192 (1989-07-01), Mitsumasa et al.
patent: 4986075 (1991-01-01), Shimoie

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