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:
Aug. 19, 1980
Filed:
Feb. 23, 1978
Osamu Matsumura, Chofu, JP;
Citizen Watch Co., Ltd., Tokyo, JP;
Abstract
A fixing structure of a back cover for watches without requirement of any jig to attach a back cover to a watch casing. The fixing structure is disclosed which comprises a watch movement, an outer casing for accomodating said watch movement therein and provided with an opening at the lower portion thereof, a back cover engaged with said outer casing, a first flange formed at the side of said movement on said opening and being shorter than the outer diameter of said back cover, a second flange formed at the opposite side of the movement on the opening and being longer than the outer diameter of said back cover, and the diameter of the opening in said second flange being shorter than the outer diameter of said back cover, a peripheral groove formed between both said first and second flanges, and a flexible packing attached to said peripheral groove, whereby said back cover is attached to the inside of said flexible packing from the direction of said first flange.