Small sized electronic timepiece movement

Details Small sized electronic timepiece movement Small sized electronic timepiece movement

1976-09-15

1978-03-07

Jackmon, E. S.

58 53, 58 59, 58 88R, G04C 300, G04B 3704

Patent

active

040771997

ABSTRACT:
A small sized electric timepiece movement has a radius which is less than the diameter of the battery which powers the movement. Hence, the battery extends from one side of the movement to a point beyond the centerline of the timepiece. Advantage is taken of the fact that the battery is dome-shaped so as to accommodate a portion of the base plate which rotatably supports the cannon pinion and hour wheel of the timepiece movement which are located centrally of the timepiece. Hence, the axis of the cannon pinion and hour wheel, if projected, would intersect the battery. The invention enables the construction of an electronic timepiece which is smaller than would otherwise be possible. With a battery having a diameter of 7.9 mm and a thickness of 3.5 mm, it is possible to make a timepiece having a diameter of 14.8 mm and a thickness of about 4 mm.

REFERENCES:
patent: 2900786 (1959-08-01), Hetzel
patent: 3052082 (1962-09-01), Beyner et al.
patent: 3628323 (1971-12-01), Baumgartner et al.

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