End-face waving gear reducer

Details End-face waving gear reducer End-face waving gear reducer

1990-05-07

1992-01-07

Herrmann, Allan D.

Horology: time measuring systems or devices

Arbor and pinion details

74640, 368323, 368324, 368220, F16H 3500, G04B 3500

Patent

active

050797549

ABSTRACT:
A rotational transmission reducer having plane waving gear mechanism comprises at least a reducer unit of an input member, an output member, and a plane flexible member which lays between the input member and the output member. The reducer unit may be coaxially piled to be a multistage reducer. A typical example is a transmission of a clock or a watch, which can simplify a conventional mechanism and lower the manufacturing cost. The reducer unit functions by some salient portions on the input member pushing the flexible member, to engage a part of a ring gear furnished on the flexible member with another ring gear furnished on the output member. The output member is rotated by differential pitches of aforesaid two ring gears. For a clock or watch transmission, the ring gear on the output member is an independent member joined frictionally with a substance of the output member so that they can be slid relatively for time adjustment.

REFERENCES:
patent: 3468122 (1969-09-01), Lee
patent: 3501978 (1970-03-01), Ferrell
patent: 3525890 (1970-08-01), Buchanan, Jr.
patent: 3532005 (1970-10-01), Bremner, Jr. et al.
patent: 3977275 (1976-08-01), Kiesewetter et al.
patent: 4308610 (1981-12-01), Walker
patent: 4378957 (1983-04-01), Malkin et al.
patent: 4646587 (1987-03-01), Danel
patent: 4742729 (1988-05-01), Cordara

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