Fixing structure of back cover for watch

Details Fixing structure of back cover for watch Fixing structure of back cover for watch

1978-02-23

1980-08-19

Miska, Vit W.

Horology: time measuring systems or devices

Cases

With protection means

368287, G04B 3708, G04B 3700

Patent

active

042177529

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.

REFERENCES:
patent: 2858663 (1958-11-01), Schwartz
patent: 2862352 (1958-12-01), Burghoff
patent: 3156086 (1964-11-01), Egger
patent: 3777473 (1973-12-01), Bussi
patent: 3838568 (1974-10-01), Zurcher et al.

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