Rack and pinion type power steering apparatus

Details Rack and pinion type power steering apparatus Rack and pinion type power steering apparatus

2008-05-06

2008-05-06

Morris, Lesley D. (Department: 3611)

Motor vehicles

Steering gear

With fluid power assist

C267S136000

Reexamination Certificate

active

07367421

ABSTRACT:
A rack shaft is supported at three positions including a gear housing receiving an engagement portion between a rack gear and a pinion near one end in an axial direction with respect to a rack housing corresponding to a support body thereof, a housing near the other end, and a hollow tube housing in an approximately center portion of the rack shaft. A bush made of a resin and constituted by a cylinder body is used for supporting the rack shaft by the hollow tube housing in the approximately center portion of the rack shaft. The bush is provided with a plurality of cut grooves extending in an axial direction thereof, and is provided with a curve forming portion substantially supporting the rack shaft and extending toward an inner side in a center portion in the axial direction thereof.

REFERENCES:
patent: 4127186 (1978-11-01), Koyano et al.
patent: 4213660 (1980-07-01), Yasui et al.
patent: 4721175 (1988-01-01), Butler
patent: 5216928 (1993-06-01), Kodachi
patent: 6485180 (2002-11-01), Mena
patent: 6644430 (2003-11-01), Harer et al.
Japanese Patent Application Laid-Open No. 2000-177606.

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