Gear train for timepiece with a stepping motor

Details Gear train for timepiece with a stepping motor Gear train for timepiece with a stepping motor

1979-10-29

1981-02-03

Miska, Vit W.

Horology: time measuring systems or devices

Chronological

With mechanical or electromechanical driven display

368220, 368322, G04B 1900, G04B 2900

Patent

active

042492513

ABSTRACT:
A stepping motor driven by a time-based electrical driving signal periodically rotates an overhung gear train directly driving the hour and minute hands mounted on a main arbor. The arbor is rotatably mounted in two spaced journals in a single tapered bearing hole in the frame. An intermediate arbor is similarly journaled. The gear train is assembled from only one side of the timepiece. The main arbor, center gear assembly, hands and dial are all added as a subassembly.

REFERENCES:
patent: 3552115 (1971-01-01), Losert
patent: 4079582 (1978-03-01), Tamaru et al.
patent: 4086753 (1978-05-01), Tsuchiya et al.

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