Power steering apparatus

Details Power steering apparatus Power steering apparatus

2008-05-20

2008-05-20

Morris, Lesley D. (Department: 3611)

Motor vehicles

Steering gear

With fluid power assist

C180S414000, C180S428000, C180S434000, C180S439000, C091S37500R, C091S378000

Reexamination Certificate

active

07374011

ABSTRACT:
A power steering apparatus includes an input shaft, an output shaft, a piston arranged to separate a first hydraulic chamber and a second hydraulic chamber, a ball screw mechanism, an output member, a control valve configured to supply hydraulic fluid selectively to the first hydraulic chamber through a first connecting passage and to the second hydraulic chamber through a second connecting passage, a first damper valve provided in the first connecting passage, a second damper valve provided in the second connecting passage, and a housing enclosing the piston. The housing is formed with a first valve receiving hole in which the first damper valve is disposed, and a second valve receiving hole in which the second damper valve is disposed.

REFERENCES:
patent: 5086687 (1992-02-01), Elser et al.
patent: 6035760 (2000-03-01), Suzuki et al.
patent: 6050171 (2000-04-01), Sheppard
patent: 6105711 (2000-08-01), Maruyama et al.
patent: 6415885 (2002-07-01), Sonoda
patent: 6779625 (2004-08-01), Sonoda et al.
patent: 6929088 (2005-08-01), Wienecke
patent: 2004/0055808 (2004-03-01), Sonoda et al.
patent: 2001-055153 (2001-02-01), None
patent: 2001-219858 (2001-08-01), None

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