US 7,321,528 B2 | ||
Watch movement | ||
Jean-Marc Wiederrecht, 40, Chemin du Guillon, Genéve (Switzerland); and Saskia Bouvier, Chancy (Switzerland) | ||
Assigned to Jean-Marc Wiederrecht, Bernex (Switzerland) | ||
Appl. No. 10/528,995 PCT Filed Mar. 13, 2002, PCT No. PCT/CH02/00151 § 371(c)(1), (2), (4) Date Mar. 14, 2005, PCT Pub. No. WO02/075461, PCT Pub. Date Sep. 26, 2002. |
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Claims priority of application No. 0810282 (EP), filed on Mar. 20, 2001. | ||
Prior Publication US 2005/0219959 A1, Oct. 06, 2005 | ||
Int. Cl. G04B 19/02 (2006.01) |
U.S. Cl. 368—220 [368/323] | 25 Claims |
1. A watch movement comprising an annular frame (10), of external diameter D, provided with a round central opening (48) defined by an internal diameter d and, borne by said frame:
an energy source (16),
a time base (18),
a counting device (20) actuated in synchronization with the time base (18),
a work train (26) actuated by said device (20),
a motion work train (34), arranged to bear analog time display means (40, 44), and
correcting means (46, 50, 56, 58) for the display means (40, 44),
characterized in that the motion work train (34) comprises a motion work mobile (36) containing a wheel (36a) and a pinion (36b), a cannon pinion (38) driven by the motion work wheel (36a) and intended to bear a minute hand (40), and an hour wheel (42) driven by the motion work pinion (36b) and intended to bear an hour hand (44), in that the cannon pinion (38) and the hour wheel (42) are concentric to the frame (10) and have a central opening substantially equal to d, and in that the work train contains a first mobile (28) provided with a spindle (28c) on which the motion work mobile (36) is friction-mounted.
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