Invention Grant
- Patent Title: Timepiece movement of reduced height with a large power reserve
- Patent Title (中): 具有较大动力储备的高度减小的钟表机芯
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Application No.: US13586400Application Date: 2012-08-15
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Publication No.: US08891339B2Publication Date: 2014-11-18
- Inventor: Laurent Kaelin , Julien Moulin
- Applicant: Laurent Kaelin , Julien Moulin
- Applicant Address: CH Grenchen
- Assignee: ETA SA Manufacture Horlogere Suisse
- Current Assignee: ETA SA Manufacture Horlogere Suisse
- Current Assignee Address: CH Grenchen
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: EP11177840 20110817
- Main IPC: G04B1/10
- IPC: G04B1/10 ; G04B19/02 ; G04B33/06 ; G04B33/12
Abstract:
Timepiece gear train device (1) of reduced height with a large power reserve, driving display means (4) including a cannon-pinion (5) and an hour wheel (6), which are driven about a main pivot axis (AP), secant to a barrel (3), by a motion work (7) and including a driving wheel (8), which pivots about a secondary pivot axis (AS) external to said barrel (3) and is friction coupled to said motion work (7) on a friction surface (9) coaxial to said secondary pivot axis (AS).Said driving wheel (8) includes a driving cannon pinion (83) pivoting about a wheel body (80) along said secondary pivot axis (AS) and coupled by a friction spring (84) to a shoulder (85) of said wheel body (80) forming said friction surface (9), said driving cannon-pinion (83) cooperating with a minute wheel (14) pivoting about a minute axis (AM).
Public/Granted literature
- US20130064047A1 TIMEPIECE MOVEMENT OF REDUCED HEIGHT WITH A LARGE POWER RESERVE Public/Granted day:2013-03-14
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