Analog timepiece movement

Details Analog timepiece movement Analog timepiece movement

1994-12-12

1995-08-29

Miska, Vit W.

Horology: time measuring systems or devices

Chronological

With mechanical or electromechanical driven display

368 88, G04B 1904, G04B 3700

Patent

active

054467039

ABSTRACT:
An improved movement for an analog wristwatch of the type having a plastic frame with a peripheral wall surrounding a central wall. The central wall carries gear trains on the dial side and movement side of the wall and a stepping motor driving the gear trains to drive the watch hands. An annular printed circuit board carries discrete electronic components disposed on one side and electrically connected thereto. The peripheral wall of the frame includes coplanar mounting surfaces arranged to support the PCB and has discrete recesses surrounding the central wall which receive the discrete electronic components when the annular PCB is so supported. An annular conductive spring plate disposed on the annular PCB performs various switching functions. The spring plate and the printed circuit board are held down against the coplanar mounting surfaces, and a thin, large diameter lithium energy cell fits inside the annular members.

REFERENCES:
patent: Re29403 (1977-09-01), Yamazaki
patent: 4087957 (1978-05-01), Miyasaka et al.
patent: 4144705 (1979-05-01), Iinuma
patent: 4407586 (1983-10-01), Musy
patent: 4496246 (1985-01-01), Ota
patent: 4748603 (1988-05-01), Ray et al.
patent: 5155711 (1992-10-01), Schwartz
patent: 5210722 (1993-05-01), Schwartz
patent: 5265071 (1993-11-01), Thorgersen et al.

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