Hydraulic power steering apparatus

Details Hydraulic power steering apparatus Hydraulic power steering apparatus

1997-03-28

1998-07-14

Nguyen, Hoang

Motors: expansible chamber type

With motive fluid valve

With ambient fluid inlet valve to expanding working chamber

60468, 60494, F15B 1108, F16D 3102

Patent

active

057787565

ABSTRACT:
A hydraulic power steering apparatus includes a fluid pump, a power cylinder, a reservoir, and a control valve connected to the pump via a supply passage including a high pressure hose and connected to the reservoir via a drain passage. The power steering apparatus also includes a bypass passage provided between the supply passage and the drain passage, and a check valve which is disposed in the bypass passage to allow operation fluid to flow only in a direction from the drain passage to the supply passage. The power steering apparatus can supply a sufficient amount of operation fluid to the power cylinder even when a steering wheel is abruptly turned or when an opposing force is input from a tire.

REFERENCES:
patent: 3926210 (1975-12-01), Rasmussen
patent: 4123964 (1978-11-01), Strauff
patent: 4673051 (1987-06-01), Darling et al.
patent: 5372214 (1994-12-01), Haga et al.
patent: 5471838 (1995-12-01), Suzuki et al.
patent: 5474145 (1995-12-01), Haga et al.
patent: 5515938 (1996-05-01), Haga et al.
patent: 5577573 (1996-11-01), Haga et al.
patent: 5638912 (1997-06-01), Haga et al.

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