| US 7,553,067 B2 | ||
| Timepiece Hammer | ||
| Laurent Perret, La Chaux-de-Fonds (Switzerland); François Trifoni, Le Locle (Switzerland); and Stephen Forsey, Le Locle (Switzerland) | ||
| Assigned to Vaucher Manufacture Fleurier S.A., Fleurier (Switzerland); and CompliTime SA, La Chaux-de-Fonds (Switzerland) | ||
| Appl. No. 12/94,780 PCT Filed Nov. 21, 2006, PCT No. PCT/EP2006/068694 § 371(c)(1), (2), (4) Date May 23, 2008, PCT Pub. No. WO2007/060152, PCT Pub. Date May 31, 2007. |
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| Claims priority of application No. 05111267 (EP), filed on Nov. 24, 2005. | ||
| Prior Publication US 2008/0291785 A1, Nov. 27, 2008 | ||
| Int. Cl. G04F 7/00 (2006.01) | ||
| U.S. Cl. 368—106 [368/101] | 10 Claims |
| 1. A return-to-zero hammer for clockwork movement designed to cooperate with at least one first and one second heart-piece of said movement having respective axes of rotation located apart from each other, the hammer comprising at least two parts whereof a first is designed to be mounted on said movement so as to be movable relative to the latter, while a second of said parts comprises at least two support surfaces designed to cooperate with said first and second heart-pieces, respectively, said first and second hammer parts being connected to each other so as to allow a limited movement of one of the parts relative to the other, wherein at least one first organ of said first part is connected to a first organ of the said second part by a ball and socket joint formed, on one hand, by a protuberance having a disc-shaped principal portion arranged on one of said parts and, on the other hand, by a recess arranged in the other of said parts and having a shape substantially complementary to that of said protuberance. |