The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 07, 1978
Filed:
Sep. 15, 1976
Tadashi Sakuma, Tokyo, JA;
Masatoshi Hanaoka, Tokyo, JA;
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.