Title:
RACK GEAR AND METHOD OF MAKING SAME
Document Type and Number:
WIPO Patent Application WO/2003/013938
Kind Code:
A2
Abstract:
A rack (20) for a rack and pinion steering system (10) includes a fully dense powder metal rack tooth section (50) joined, by sintering, to a hollow rack tube (30). The rack tooth section (50) is formed by pressing powder metal (70) into a die assembly (60) having internal rack tooth forms (68). The rack tube (30) and the pressed powder metal (70) are sintered to complete formation of the rack (20).
Inventors:
SAARINEN JOHN (US)
Application Number:
PCT/US2002/024900
Publication Date:
February 20, 2003
Filing Date:
August 06, 2002
Export Citation:
Assignee:
TRW INC (US)
SAARINEN JOHN (US)
SAARINEN JOHN (US)
International Classes:
B21H1/10; B22F5/08; B22F7/08; B62D3/12; F16H55/26; (IPC1-7): B62D/
Foreign References:
| US5746285A | 1998-05-05 | |||
| US6178843B1 | 2001-01-30 | |||
| US4133221A | 1979-01-09 | |||
| US3792624A | 1974-02-19 | |||
| US4428450A | 1984-01-31 |
Attorney, Agent or Firm:
Tarolli, Thomas L. (Sundheim Covell, Tummino & Szabo, L.L.P.,
Suite 1111, 526 Superior Avenu, Cleveland OH, US)
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