Hinge mount for seats having adjustable backrest

Details Hinge mount for seats having adjustable backrest Hinge mount for seats having adjustable backrest

1979-11-13

1981-11-24

Lyddane, William E.

Chairs and seats

Movable back

Tiltable

74462, A47C 1025

Patent

active

043020470

ABSTRACT:
The hinged mount for motor vehicle seats includes a wobble gear adjuster having an outer gear integrally formed on a hinged mount secured to the seat proper and an inner gear integrally formed on a hinged mount secured to the reclinable backrest. The toothing of the outer gear has an outline composed of an alternating succession of concave and convex circular sections having substantially the same diameter of curvature. The outline of the toothing of the inner gear is formed by concave curves forming the root flanks of respective teeth and being equidistant from a cycloid generated by the convex tips of the teeth of the outer gear. The cycloid root flanks are confluent with rounded crown flanks which transit into concave tips of the inner teeth having a shorter addendum than that of the outer teeth, and coinciding with the crown circle of the inner gear.

REFERENCES:
patent: 4149431 (1979-04-01), Rouverol

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