Gear for watch movement

Details Gear for watch movement Gear for watch movement

2008-04-29

2008-04-29

Miska, Vit W (Department: 2833)

Horology: time measuring systems or devices

Display trains

C368S037000, C074S434000, C074S435000, C074S437000

Reexamination Certificate

active

07366058

ABSTRACT:
Gear for day of the month display mechanism in a watch movement, including:a driving organ (1),a driven organ (50),characterized in that said driving organ (1) is provided with z1first teeth (120) and z2second teeth (121), the height of the second teeth (121) being lower than the height of the first teeth (120),and in that said driven organ (50) is provided with z3third teeth (501) and z4fourth teeth (503), the height of the third teeth (501) being greater than the height of the fourth teeth (503),the height of the z1first teeth (120) allowing the z3third teeth (501) as well as the z4fourth teeth (503) to be driven,the height of the z2second teeth (121) allowing however only the z3third teeth (501) but not the z4fourth teeth (503) to be driven.

REFERENCES:
patent: 4223528 (1980-09-01), Vuilleumier
patent: 5432759 (1995-07-01), Vaucher
patent: 6301981 (2001-10-01), Oechslin
patent: 6802645 (2004-10-01), Ludwig
patent: 7023762 (2006-04-01), Burkhardt et al.
patent: 680 630 (1992-10-01), None

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