Power steering control valve with back pressure

Details Power steering control valve with back pressure Power steering control valve with back pressure

1998-04-09

2000-07-04

Michalsky, Gerald A.

Fluid handling

Systems

Multi-way valve unit

91375A, F15B 910

Patent

active

060824034

ABSTRACT:
A hydraulic fluid control valve (18) for a power steering gear (10) includes first and second relatively rotatable valve members (60, 62) which direct hydraulic fluid to flow between the valve members (60, 62) from inlet ports (70) to outlet ports (92). The valve members (60, 62) have radially opposed lands (71-79, 101-109) and grooves (81-89, 121-129) defining orifices (130) that enlarge and orifices (130) that constrict upon relative rotation of the valve members (60, 62) from neutral positions. A pair of the constricting orifices (130b, 130c) are located in parallel between the inlet ports (90) and the outlet ports (92). Each of those parallel constricting orifices (130b, 130c) is defined by a corresponding chamfered corner portion of a corresponding land (101, 102). The valve members (60, 62) provide back pressure at selected orifices between the outlet ports (92) and the inlet ports (90). The selected orifices at which back pressure is provided include only one (130c) of the pair of parallel constricting orifices (130b, 130c).

REFERENCES:
patent: 3746045 (1973-07-01), Bunker et al.
patent: 4445422 (1984-05-01), Bishop
patent: 4461321 (1984-07-01), Bacardit
patent: 4577660 (1986-03-01), Haga et al.
patent: 4852462 (1989-08-01), Uchida et al.
patent: 4860635 (1989-08-01), Uchida et al.
patent: 5244012 (1993-09-01), Tabata et al.
patent: 5263512 (1993-11-01), Emori et al.
patent: 5417244 (1995-05-01), Behrens et al.
patent: 5458153 (1995-10-01), Roeske
patent: 5582207 (1996-12-01), Gilbert et al.
patent: 5794507 (1998-08-01), Strong

Affiliated with

Also associated with

Rating

Power steering control valve with back pressure does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Power steering control valve with back pressure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power steering control valve with back pressure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1477196