Annular yoke for rack and pinion gear

Details Annular yoke for rack and pinion gear Annular yoke for rack and pinion gear

B - Operations, Transporting

62

D

142/33

B62D 3/12 (2006.01)

Patent

CA 1127506

Abstract of the Disclosure A rack and pinion gear assembly includes a resilient bushing which urges the rack into meshing engagement with the pinion. An arcuate inside bearing surface of the bushing has a larger radius of curvature than the curved outside surface of the rack against which it bears. The rack thus makes tangent contact with the bushing. When one portion of the bushing is worn and therefore excessive play appears in the steering gear assembly, the bushing may be removed from the housing of the assembly and rotated and then reinserted into the housing to thereby provide an unworn bearing surface which slidably engages the rack. The bushing includes a plurality of axially extending grooves through which lubricant is supplied to the gearing surfaces. In another embodiment the aperture in the bushing through which the rack extends is composed of four arcuate segments each having the same radius of curvature, and each having a different center of curvature respectively. This provides tangent contact between the rack and the bushing at two axially extending areas.

312969

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