Watchcase having mechanism for securing crystal to case

Details Watchcase having mechanism for securing crystal to case Watchcase having mechanism for securing crystal to case

1987-05-13

1988-04-26

Roskoski, Bernard

Horology: time measuring systems or devices

Cases

With bezel or crystal details

368297, 368295, G04B 3700

Patent

active

047409355

ABSTRACT:
The piece of jewelry protected by a hard metal shielding may consist of a metallic watchband composed of elements jointed to each other. In this case each one of said elements comprises a body member 61 of a material suitable for machining, such as stainless steel, and a plate 64 of sintered hard metal which is secured to body member 61 by means of plugs 65 welded against the back side of plate 64 and riveted to body member 61. The upper surface of the watchband elements is thus protected against injuries which contacts with foreign bodies could produce. Since that face of the watchband elements is practically the only one which is visible, when the watch is carried, the watchband will keep its original appearance during all the time it will be carried.

REFERENCES:
patent: 732245 (1903-06-01), Weiss
patent: 1735384 (1929-10-01), Fielding
patent: 2029769 (1936-02-01), Goldblatt
patent: 2659105 (1953-11-01), Halbig et al.
patent: 3242664 (1966-03-01), Lederrey
patent: 3292362 (1966-12-01), Klingenberg
patent: 3643423 (1972-02-01), Piquerez
patent: 3837163 (1974-09-01), Fujimori
patent: 4034552 (1977-07-01), Davidson
patent: 4198811 (1980-04-01), Ratajski
patent: 4440505 (1984-04-01), Gogniat
Kronos Catalogue, vol. 1, No. 1, pp. 10, 18, 19, 21, 22 & last page; 1980/81 Tourneau, Inc.
Laid Open Utility Model Publ. No. 11768/1974, K. Takagi.
Laid Open Utility Model Publ. No. 54474/1974, M. Oka.
Japanese Abstract No. 53-70860.
Laid Open Patent Publ. No. 89769/1976, K. Imafuke et al.

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