Analog timepiece movement for large diameter energy cell

Details Analog timepiece movement for large diameter energy cell Analog timepiece movement for large diameter energy cell

1992-04-30

1993-05-11

Miska, Vit W.

Horology: time measuring systems or devices

Chronological

With significant casing or mounting support structure

368160, 368220, G04B 3700, G04F 500

Patent

active

052107221

ABSTRACT:
Analog timepiece movement adapted for a large diameter, thin energy cell, the movement comprising a molded frame of insulating material having a top central wall, and having depending peripheral side wall portions. A flat bridge of insulating material divides the movement into an inner cavity. A stepping motor and gear train are disposed in the inner cavity and a quartz crystal is disposed outside of the cavity. One of the wheel assemblies is of non-magnetic material and extends through a hole in by the stepping motor stator. The peripheral wall portions and the bridge together define a circular envelope in the outer cavity adapted to locate and contain said energy cell. The movement is substantially elliptical in shape, the ellipse having a minor axis slightly greater than that of the energy cell, and the quartz crystal is disposed on one end of the elliptical frame alongside the energy cell.

REFERENCES:
patent: Re29403 (1977-09-01), Yamazaki
patent: 3966498 (1976-06-01), Wuthrich
patent: 4077199 (1978-03-01), Sakuma et al.
patent: 4087957 (1978-05-01), Miyasaka et al.
patent: 4144705 (1979-03-01), Iinuma
patent: 4202166 (1980-05-01), Komiyama et al.
patent: 4453833 (1984-06-01), Saitoh
patent: 4496246 (1985-01-01), Ota et al.
patent: 4744066 (1988-05-01), Schwartz
patent: 4794576 (1988-12-01), Schwartz et al.

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