Horology: time measuring systems or devices – Cases – With bezel or crystal details
Patent
1980-06-25
1982-04-20
Miska, Vit W.
Horology: time measuring systems or devices
Cases
With bezel or crystal details
G04B 3700
Patent
active
043262813
ABSTRACT:
A mounting structure of plastic glass in the watch case enabling the mounting with a minimum amount of necessary deflection of the glass for preventing the crack of the glass. The glass has a radially extending projection in the lower portion of the periphery thereof and the watch case has a recess which has a radially extending groove which is adapted to engage the projection of the glass. The recess is provided with a beveled guiding portion at the entrance edge thereof and the projection has a beveled guiding portion at the leading edge thereof. The glass may be inserted into the recess of the case with the projection sliding on the beveled guiding edge of the recess.
REFERENCES:
patent: 2621468 (1952-12-01), Colomb
patent: 2792684 (1957-05-01), Dinstman
Ishigaki Hisao
Tanaka Ryuzo
Citizen Watch Co. Ltd.
Miska Vit W.
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