专利名称：Variable effort steering gear
发明人：Stanley R. Goodrich, Jr.,Ronald L. Harkrader 申请号：US07/669810
申请日：19910315
公开号：US05070958A
公开日：
19911210
reaction in the shaft专利内容由知识产权出版社提供
摘要：A variable effort power steering gear including detent elements in radial sockets in a pinion head, detent grooves in a stem of a stub shaft, an annular low speed reaction piston on the pinion head engageable on the detent elements when the low speed piston moves in a first direction, and an annular high speed reaction piston on the pinion head engageable on the detent elements when the high speed piston moves in a second direction opposite the first direction. Low and high speed bias springs apply first and second bias forces against the low and high speed reaction pistons. A control effects a fluid pressure gradient across the high speed piston in a low speed range of the steering gear counter to the second bias force so that in the low speed range only the first bias force is operative to urge the detent elements into the detent grooves and in the high speed range both the first and the second bias forces are operative to urge the detent elements into the detent grooves.
申请人：GENERAL MOTORS CORPORATION
代理人：Saul Schwartz
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