Horology: time measuring systems or devices – Crown or stem details – Switch or detent
Patent
1990-03-26
1991-08-27
Roskoski, Bernard
Horology: time measuring systems or devices
Crown or stem details
Switch or detent
368319, G04B 2900
Patent
active
050439588
ABSTRACT:
The watch case (1) is of plastic material and provided with a hole (3) in which a push button (6) may slide. The end (12) of the stem (7) of the push button includes a bulge (13) the diameter of which is greater than that of the neck (11) formed at the end of the hole opening into the interior of the case (1). When the stem (7) is introduced into the hole (3) of the wall (2) the bulge (13) elastically deforms the neck (11) which afterwards reassumes its initial form and assures axial positioning of the stem (7).
REFERENCES:
patent: 4104866 (1978-08-01), Chappatte
patent: 4118923 (1978-10-01), Bourquard
patent: 4346464 (1982-08-01), Wenger
patent: 4408901 (1983-10-01), Gagnebin
patent: 4451719 (1984-05-01), Lauterburg et al.
Swiss Search Report for corresponding Swiss Application No. CH 1377/89 and listing of corresponding patent documents.
Eta SA Fabriques d'Ebauches
Roskoski Bernard
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