Bezel, crystal and case assembly in a water-proof watch |
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| 申请号 | US3688492D | 申请日 | 1971-03-10 | 公开(公告)号 | US3688492A | 公开(公告)日 | 1972-09-05 |
| 申请人 | SUWA SEIKOSHA KK; | 发明人 | YABANA YAKAMORI; | ||||
| 摘要 | A watch case is so designed that its outer surface can be ground without the risk of damage to that surface of the case which engages the bezel. Corresponding modification of the bezel results in a decrease in its width, and in a decrease in the overall diameter of the watch. | ||||||
| 权利要求 | 1. A waterproof watch case, comprising a case body having a frustoconical surface with an annular groove therein, an annular lip forming one wall of said groove, said lip lying entirely within the extension of said frustoconical surface and said wall being an engaging surface, a bezel held in a snap fit by said lip at said engaging surface, a watch crystal held by said bezel and an annulus of flexible packing material effecting a waterproof seal between said case body and said watch crystal whereby said frustoconical surface may be ground without danger of grinding said lip and damaging said engaging surface of said lip in the grinding operation. 2. A watch case as defined in claim 1 in which said watch crystal has an annular shoulder in the region of its periphery and said bezel has a corresponding shoulder, said bezel shoulder engaging said watch crystal shoulder, thereby holding said watch crystal sealingly against said packing. 3. A watcH case as defined in claim 1, wherein said watch comprises a transparent face and a peripheral annulus cemented to said transparent face and said seal between said watch crystal and said case body is effected at said peripheral annulus. 4. A watch case as defined in claim 3, wherein said transparent face and said peripheral annulus are composed of a material selected from the group consisting of glass and plastics. 5. A watch case as defined in claim 3, wherein said transparent face and said peripheral annulus are alike in composition. |
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