Motors: expansible chamber type – Working member position feedback to motive fluid control – Follower type
Reexamination Certificate
2006-04-04
2006-04-04
Lopez, F. Daniel (Department: 3745)
Motors: expansible chamber type
Working member position feedback to motive fluid control
Follower type
C092S153000, C384S387000
Reexamination Certificate
active
07021190
ABSTRACT:
A rack and pinion steering apparatus (10) comprises a first bearing surface (38) that is formed on a surface (36) that defines a passage (24) in housing (12). An input assembly (120) that includes a first portion (124) of a control valve (132) extends into the passage (24) of the housing (12). An output assembly (80) that includes a second portion (84) of the control valve (132) is located in the passage (24) of the housing (12). A second bearing surface (96) is formed on an outer surface (94) of the output assembly (80). The first bearing surface (38) cooperates with the second bearing surface (96) to define an annular space (162) for receiving fluid and for supporting rotation of the output assembly (80) relative to the housing (12).
REFERENCES:
patent: 654803 (1900-07-01), Reynolds
patent: 3669146 (1972-06-01), Adams
patent: 3908479 (1975-09-01), MacDuff
patent: 4499922 (1985-02-01), Tanguy
patent: 4633963 (1987-01-01), Hasegawa
“Lubrication Fundamentals”, by J. Geo. Wills, ISBN 0-8247-6976-7, 1980, pp. 118-119.
“Machineries Handbook”, 24thEd., 1992 0-8311-2492-X, pp. 2106.
Lopez F. Daniel
Tarolli, Sundheim Covell & Tummino L.L.P.
TRW Inc.
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