Dual mode hydraulic circuit control and method

Details Dual mode hydraulic circuit control and method Dual mode hydraulic circuit control and method

2011-01-25

2011-01-25

Lazo, Thomas E (Department: 3745)

Power plants

Pressure fluid source and motor

Having condition responsive control in a system of distinct...

C060S452000

Reexamination Certificate

active

07874151

ABSTRACT:
A dual mode control system for a hydraulic circuit (200) having a variable displacement pump (216) includes at least two actuators, each controlled by a respective valve. The valves are connected in series with a pressure sensor (250) measuring a pressure of fluid between the first valve (224) and the second valve (234) and relaying a signal to the electronic controller (202). The electronic controller (202) operates in a first mode, varying the displacement of the pump (216) based on a command signal operating at least one of the valves, and operates in a standby mode, varying the displacement of the pump (216) based on the signal from the sensor, when both valves are in their respective neutral positions.

REFERENCES:
patent: 3952509 (1976-04-01), Coleman
patent: 4470259 (1984-09-01), Miller et al.
patent: 4664017 (1987-05-01), Janvrin
patent: 5295795 (1994-03-01), Yasuda et al.
patent: 5297019 (1994-03-01), Zuehlke
patent: 5326230 (1994-07-01), Fischer et al.
patent: 5421155 (1995-06-01), Hirata et al.
patent: 5575148 (1996-11-01), Hirata et al.
patent: 5873244 (1999-02-01), Cobo et al.
patent: 6269635 (2001-08-01), Zuehlke
patent: 6282892 (2001-09-01), Arai
patent: 6389808 (2002-05-01), Sakai
patent: 6481202 (2002-11-01), Zuehlke et al.
patent: 6931847 (2005-08-01), Throckmorton et al.
patent: 05-099121 (1993-04-01), None
patent: 05-196001 (1993-08-01), None

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