Timepiece having case formed of rock-like material

Details Timepiece having case formed of rock-like material Timepiece having case formed of rock-like material

1987-08-05

1989-08-01

Roskoski, Bernard

Horology: time measuring systems or devices

Cases

With movement securing means

368309, 368281, 368282, 368280, 368299, G04B 3700, G04B 2900

Patent

active

048539104

ABSTRACT:
A timepiece includes an outer caseband 3 formed entirely in one piece of a hard material which likewise includes a hub member 4 providing the timepiece dial, and a metallic inner caseband 16. An annular step 10 for positioning and glue fastening a crystal 9 surrounds the hub member. This arrangement gives the hard material the rigidity necessary to resist forces acting thereon during manufacture and subsequently when the watch is worn.

REFERENCES:
patent: 3719038 (1973-03-01), Klingenberg
patent: 3733807 (1973-05-01), Nozawa
patent: 4620798 (1986-11-01), Scarinzi
patent: 4692033 (1987-09-01), Mock et al.
Transportation Design and Technology, Inc. V. General Motors Corp. et al. 4/14/1980 212USPQ574.

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