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

1986-04-02

1987-09-08

Roskoski, Bernard

Horology: time measuring systems or devices

Cases

Of particular material

368309, 368281, 368282, G04B 3700

Patent

active

046920331

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: 4075828 (1978-02-01), Klingenberg
patent: 4529323 (1981-07-01), Gagnebin
patent: 4620798 (1986-11-01), Scarinzi

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