Timepiece with date mechanism

Details Timepiece with date mechanism Timepiece with date mechanism

2007-01-02

2007-01-02

Miska, Vit W. (Department: 2841)

Horology: time measuring systems or devices

With calendar indicator

Movable ring or disk

C368S038000

Reexamination Certificate

active

11484731

ABSTRACT:
This date mechanism comprises a calendar mobile (1), a driving mobile (3) an instantaneous-jump cam (7), a finger (9b) kinematically connected to this cam (7) in order to drive the calendar mobile (1). The driving finger (9b) is borne by a release member (9) which is mounted pivotably about two axes (3a, 7a), one (3a) of which is that of the driving mobile (3), this release member (9) having an opening (9a) configured to allow an angular displacement about the second of these two axes (7a), whereby the driving finger (9b) can be released from the toothing (1a) of the calendar ring while the calendar is corrected. A return spring (8) tends to rotate the driving finger (9b) about the second pivot axis (7a) in order to bring it to butt against an edge of the opening (9b), a position in which the driving finger is engaged with the toothing of the calendar ring (1).

REFERENCES:
patent: 3177646 (1965-04-01), Ernest et al.
patent: 3449905 (1969-06-01), Besson
patent: 3677211 (1972-07-01), Miller et al.
patent: 4194353 (1980-03-01), Thomi et al.
patent: 460645 (1968-03-01), None
patent: 525508 (1972-03-01), None
European Search Report dated May 12, 2006 in European application No. 05405446.

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