Watch having a case formed at least partially from a hard materi

Details Watch having a case formed at least partially from a hard materi Watch having a case formed at least partially from a hard materi

1987-10-26

1990-09-11

Miska, Vit W.

Horology: time measuring systems or devices

Cases

Of particular material

368299, 368319, G04B 3700, G04B 2900

Patent

active

049568302

ABSTRACT:
The setting stem 27 of a watch is engaged in a radial hole 29 of an inner metallic caseband 16 with a packing 31 to assure fluid tightness. An outer caseband 3 of hard material includes a radial hole 28 aligned with the hole in the inner caseband. A crown 32 of the same material as the outer caseband may cap the stem. This arrangement enables uniting the wear resistant properties of the hard material with good fluid tightness of the stem.

REFERENCES:
patent: 360477 (1987-04-01), Potter
patent: 2719403 (1955-10-01), Gisiger
patent: 3861990 (1975-01-01), Kasai et al.
patent: 4620798 (1986-11-01), Scarinzi

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