Machine element or mechanism – Gearing – Follow-up mechanism
Patent
1998-11-10
2000-06-27
Herrmann, Allan D.
Machine element or mechanism
Gearing
Follow-up mechanism
91375A, 180421, 13762521, B62D 5083
Patent
active
060792892
ABSTRACT:
A hydraulic power steering gear (10) for a vehicle comprises first and second valve members (40 and 42) which are disposed coaxial to one another and which are relatively rotatable about a first axis (38) to selectively port hydraulic fluid. The first valve member (40) has an associated axial bore (170). The axial bore (170) has a second axis (174) which extends parallel to the first axis (38). The second valve member (42) includes a cam surface (128). A plunger (200) is disposed in the axial bore (170) for movement along the second axis (174). The plunger has a detent surface (208). Springs (240) bias the plunger (200) axially toward the second valve member (42). A detent roller (220) acts between the first and second valve members (40 and 42). The detent roller (220) is located in the cam surface (128) and in the detent surface (208) in a neutral condition to provide a physically perceptible indication to a driver of the vehicle of operation between the neutral condition and an actuated condition.
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Gilbert Wendell L.
Morsches Michael R.
Herrmann Allan D.
TRW Inc.
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