Title:
A magnetic device which rotates Arber in a movement for timepieces
Document Type and Number:
Japanese Patent JP6114860
Kind Code:
B2
Abstract:
The device for pivoting an arbor about a determined axis includes at least one magnetic bearing including a magnet which exerts a force of attraction on a pivot, made of magnetic material, of the arbor. Further, the bearing includes a magnetic flux centring structure arranged between the magnet and the pivot, and a support for the centring structure. This centring structure includes a peripheral portion and a central portion resiliently connected to the peripheral portion by at least one connecting element, the central portion being formed of a highly magnetically permeable material and having smaller dimensions than those of the magnet. The peripheral portion is rigidly force fitted to the support so that the central portion is centred on the pivot axis.
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Inventors:
Alan Zauk
Benoit rugere
Sylvain Marechal
David Sarchi
Benoit rugere
Sylvain Marechal
David Sarchi
Application Number:
JP2016107117A
Publication Date:
April 12, 2017
Filing Date:
May 30, 2016
Export Citation:
Assignee:
Monterey Breguet SR
International Classes:
G04B31/004; G04B13/02; G04B17/06
Foreign References:
| WO2012062524A1 | ||||
| FR1098890A | ||||
| US4340038 |
Attorney, Agent or Firm:
Shigeki Yamakawa
Masaki Yamakawa
Masaki Yamakawa
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