Flow control device of power steering apparatus

Details Flow control device of power steering apparatus Flow control device of power steering apparatus

1998-04-09

2000-03-28

Hepperle, Stephen M.

Fluid handling

Self-proportioning or correlating systems

Self-controlled branched flow systems

13711507, 13711519, 137549, G05D 1103

Patent

active

060418079

ABSTRACT:
A flow control device, responsive to the rotational speed of a pump and to load pressure, has a simple structure. And a housing of the flow control device for saving energy can make use of a general pump housing not for saving energy as a common housing.
The flow control device of a power steering apparatus, arranged in a housing of a pump, includes a flow control valve and a load pressure responsive valve. The flow control valve includes a bypass spool with a control rod penetrating a metering orifice. The load pressure responsive valve is incorporated in a union for response to the load pressure. The control rod is located on the bypass spool for response to the rotational speed of the pump.

REFERENCES:
patent: 3915186 (1975-10-01), Thomas
patent: 4182354 (1980-01-01), Bergstedt
patent: 4917139 (1990-04-01), Narumi et al.
patent: 5038822 (1991-08-01), Iwata
patent: 5513672 (1996-05-01), Nguyen
patent: 5685146 (1997-11-01), Takeuchi et al.

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