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1. EP2450758 - Magnetic pivot and electrostatic pivot

Office European Patent Office
Application Number 10190510
Application Date 09.11.2010
Publication Number 2450758
Publication Date 09.05.2012
Publication Kind B1
IPC
G04B 17/32
GPHYSICS
04HOROLOGY
BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME-PIECES USING THE POSITION OF THE SUN, MOON, OR STARS
17Mechanisms for stabilising frequency
32Component parts or constructional details, e.g. collet, stud
F16C 39/06
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; MECHANICAL MEANS FOR TRANSMITTING MOVEMENT IN A FLEXIBLE SHEATHING; ELEMENTS OF CRANKSHAFT MECHANISMS; PIVOTS; PIVOTAL CONNECTIONS; ROTARY ENGINEERING ELEMENTS OTHER THAN GEARING, COUPLING, CLUTCH OR BRAKE ELEMENTS; BEARINGS
39Relieving load on bearings
06using magnetic means
G04B 31/00
GPHYSICS
04HOROLOGY
BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME-PIECES USING THE POSITION OF THE SUN, MOON, OR STARS
31Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
CPC
F16C 25/045
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
25Bearings for exclusively rotary movement adjustable for wear or play
02Sliding-contact bearings
04self-adjusting
045with magnetic means to preload the bearing
F16C 32/0408
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
32Bearings not otherwise provided for
04using magnetic or electric supporting means
0406Magnetic bearings
0408Passive magnetic bearings
F16C 2370/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
2370Apparatus relating to physics, e.g. instruments
G04B 17/32
GPHYSICS
04HOROLOGY
BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
17Mechanisms for stabilising frequency
32Component parts or constructional details, e.g. collet, stud ; , virole or piton
G04B 31/00
GPHYSICS
04HOROLOGY
BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
31Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
G04B 31/004
GPHYSICS
04HOROLOGY
BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
31Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
004characterised by the material used
Applicants MONTRES BREGUET SA
Inventors MARÉCHAL SYLVAIN
SARCHI DAVIDE
KARLEN OLIVIER
TODESCHINI ARNAUD
Designated States
Priority Data 10190510 09.11.2010 EP
Title
(DE) Magnetischer Drehzapfen und elektrostatischer Dhrerzapfen
(EN) Magnetic pivot and electrostatic pivot
(FR) Pivot magnétique et pivot électrostatique
Abstract
(FR)
Procédé d'orientation d'un composant horloger en matériau perméable magnétiquement ou magnétique comportant deux extrémités. On crée de part et d'autre desdites extrémités deux champs magnétiques attirant chacun ledit composant sur une masse polaire, avec un déséquilibre d'intensité desdits champs magnétiques autour dudit composant pour créer un différentiel de forces sur ce dernier et plaquer une desdites extrémités sur une surface de contact d'une desdites masses, et maintenir l'autre extrémités à distance de l'autre masse polaire. Pivot magnétique comportant un tel composant horloger. Il comporte un dispositif de guidage avec, à une distance d'entrefer supérieure à l'entraxe desdites extrémités, des surfaces de deux masses polaires agencées pour être attirée chacune par un champ magnétique émis par une desdites extrémités, ou pour générer chacune un champ magnétique attirant une desdites extrémités, de façon à ce que les forces magnétiques exercées auxdites deux extrémités soient d'intensité différente, pour attirer une desdites extrémités en contact avec une seule desdites surfaces polaires.

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