Method for assembling a watch case

Details Method for assembling a watch case Method for assembling a watch case

1989-06-22

1991-02-12

Roskoski, Bernard

Horology: time measuring systems or devices

Cases

With bezel or crystal details

368295, 368280, 29177, 156 731, 156 751, B23B 3116, G04B 3700

Patent

active

049930079

ABSTRACT:
The watch case of this invention includes a caseband-back of plastic material, a metallic bezel and a packing to assure impermeability between the caseband-back and the bezel. A first annular seat extending radially into the bezel receives an annular protuberance integrally formed with the caseband in a manner such that the caseband-back and bezel become inseparable. At the same time a packing is compressed into a second seat to render impermeable the discontinuity between the caseband-back and the bezel. Assembly of the caseband-back to the bezel is effected by ultrasonic vibrations.

REFERENCES:
patent: 4023347 (1977-05-01), Hyaber
patent: 4059294 (1977-11-01), Falcone
patent: 4136515 (1979-01-01), Thompson
patent: 4197698 (1988-04-01), Finger
patent: 4259419 (1981-03-01), Uba et al.
patent: 4488345 (1984-12-01), Muller et al.
patent: 4558957 (1985-12-01), Mock et al.
patent: 4712809 (1987-12-01), Legris

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