Thin movement for stepping motor watch

Details Thin movement for stepping motor watch Thin movement for stepping motor watch

1981-06-19

1983-05-10

Roskoski, Bernard

Horology: time measuring systems or devices

Display trains

368 76, 368 80, 368324, G04B 1902, G04B 2900

Patent

active

043826954

ABSTRACT:
A thin movement for a stepping motor watch employs a single frame member a peripheral front frame portion surrounding and connected to a back frame portion and stepping motor stator, affixed to the frame member, pins fixed in the back frame portion and stepping motor stator, gear members including the stepping motor rotor and gear train driving the watch hands rotatably mounted on said pins, a dial for the timepiece supported on the front frame portion, the dial serving to control axial movement of the gear members on the pins. Only two layers of gear members are required in the space between the back frame portion and the dial.

REFERENCES:
patent: 4079582 (1978-03-01), Tamaru et al.
patent: 4104859 (1978-08-01), Ogihara et al.
patent: 4249251 (1981-02-01), Wuthrich

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