Composite housing for rack and pinion power steering gear

Details Composite housing for rack and pinion power steering gear Composite housing for rack and pinion power steering gear

1987-03-09

1988-12-06

Herrmann, Allan D.

Machine element or mechanism

Gearing

Follow-up mechanism

29525, 74422, 74498, 91375A, 180148, 277 72FM, 403267, B62D 508, B62D 5306, F16B 1100

Patent

active

047888776

ABSTRACT:
A composite housing for a rotary valve rack and pinion power steering gear includes a pinion housing portion fabricated of a light weight first metal and valve housing portion fabricated of a more dense and abrasion resistant second metal. The pinion housing portion includes a main body having a pinion bore therein. The valve housing portion is a right circular cylinder with an annular neck thereon. The annular neck is press fitted into a counterbore around the pinion bore whereby the valve housing portion is connected to the pinion housing portion. The pinion housing portion has an annular groove in an inside surface of the counterbore and a plurality of molding passages connected to the groove. The neck of the valve housing portion has an annular groove which cooperates with the groove in the counterbore in defining an annular ring chamber. Curable plastic is injection molded into the ring chamber and, when cured, defines a retaining ring providing a redundant connection between the valve housing portion and the pinion housing portion of the composite housing.

REFERENCES:
patent: 1285430 (1918-11-01), Sheppy
patent: 3788159 (1974-01-01), Plant, II
patent: 4213660 (1980-07-01), Yasui et al.
patent: 4257313 (1981-03-01), Sheppard
patent: 4452274 (1984-06-01), Haga et al.
patent: 4454801 (1984-06-01), Spann
patent: 4465101 (1984-08-01), Hasegawa
patent: 4483237 (1984-11-01), Elser
patent: 4535798 (1985-08-01), Sano

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