BALANCE CONSTRUCTION FOR ELECTRONIC TIMEPIECES

A balance having a pair of essentially parallel balance wheels mounted on a common shaft for oscillation, and having permanent magnets mounted on said balance wheels, is provided with magnetic yoke members on each of said balance wheels formed with recesses for receiving said permanent magnets, the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	FUJIMORI H,JA, KURITA H,JA, FUJISAWA Y,JA
Format:	Patent
Sprache:	eng
Schlagworte:	BROACHING ELECTROMECHANICAL CLOCKS OR WATCHES FILING HOROLOGY LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOTOTHERWISE PROVIDED FOR MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PHYSICS PLANING SAWING SCRAPING SHEARING SLOTTING TRANSPORTING
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Beschreibung
Zusammenfassung:	A balance having a pair of essentially parallel balance wheels mounted on a common shaft for oscillation, and having permanent magnets mounted on said balance wheels, is provided with magnetic yoke members on each of said balance wheels formed with recesses for receiving said permanent magnets, the depth of said recesses being at least more than one-half the thickness of the permanet magnets. Further, said permanent magnets are positioned so that the distance between facing permanent magnets is equal to more than the least distance between the balance wheels.