Structure for a watch case made of cemented carbide

Details Structure for a watch case made of cemented carbide Structure for a watch case made of cemented carbide

1982-01-26

1985-01-29

Roskoski, Bernard

Horology: time measuring systems or devices

Cases

Of particular material

368291, 368294, G04B 3700

Patent

active

044962487

ABSTRACT:
A structure of a watch case, which comprises a watchglass, a case band member composed of a cemented carbide alloy and having a flange formed at an upper portion thereof and an annular surface formed at a lower portion of the flange, a watchglass supporting ring brazed to the case band member and having an upper surface for supporting a bottom surface of the watchglass, a packing for providing a waterproof and a back cover secured to the case band member. The packing is provided between the outer periphery of the watchglass and an annular groove. The annular groove is formed by the flange and annular surface of the case band member and the upper surface of the watchglass supporting ring.

REFERENCES:
patent: 4035673 (1977-07-01), Ishida et al.
patent: 4363555 (1982-12-01), Finger

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