Motors: expansible chamber type – Working member position feedback to motive fluid control – Follower type
Patent
1996-12-09
1998-08-18
Michalsky, Gerald A.
Motors: expansible chamber type
Working member position feedback to motive fluid control
Follower type
13762523, F15B 910
Patent
active
057945071
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: 5562124 (1996-10-01), Behrens et al.
patent: 5582207 (1996-12-01), Gilbert et al.
Michalsky Gerald A.
TRW Inc.
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