Wristwatch push-piece winding button control device

Details Wristwatch push-piece winding button control device Wristwatch push-piece winding button control device

2008-01-15

2008-01-15

Miska, Vit W (Department: 2833)

Horology: time measuring systems or devices

Cases

With crown or stem details

C368S320000

Reexamination Certificate

active

07318670

ABSTRACT:
The device includes a support pipe driven into a bore of a watchcase, a push-piece crown consisting of a head and an extension mounted into the pipe in mobile manner, a part entraining rotation that is integral with the winding and setting stem of the watch, coupling elements causing the extension and the entraining part to move together in rotation as well as in translation in the direction of pulling, a first axial spring arranged between the crown's head and the entraining part, and a second axial spring arranged between the crown's head and the pipe. The first spring exerts a force that is high enough to overcome the resistance offered by stem during the change from the setting position to the winding position of the crown. The second spring exerts the principal restoring force bringing the crown back from its pushed position to its winding position.

REFERENCES:
patent: 3362153 (1968-01-01), Wenger
patent: 4292682 (1981-09-01), Wenger
patent: 4313187 (1982-01-01), Waki et al.
patent: 5257247 (1993-10-01), Miche et al.
patent: 6902169 (2005-06-01), Wild
patent: 6974248 (2005-12-01), Damasko
patent: 553 436 (1974-08-01), None
patent: 0 426 941 (1991-05-01), None
patent: 923 922 (1947-07-01), None

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