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Machine translation
1. (WO2000029911) ELECTRONICALLY CONTROLLED MECHANICAL TIMEPIECE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2000/029911    International Application No.:    PCT/JP1999/006427
Publication Date: 25.05.2000 International Filing Date: 17.11.1999
IPC:
G04C 3/00 (2006.01), G04C 10/00 (2006.01), G04C 13/11 (2006.01)
Applicants: SEIKO EPSON CORPORATION [JP/JP]; 4-1, Nishi-Shinjuku 2-Chome Shinjuku-Ku Tokyo 163-0811 (JP) (For All Designated States Except US).
MOTEKI, Masatoshi [JP/JP]; (JP) (For US Only).
TAKAHASHI, Osamu [JP/JP]; (JP) (For US Only)
Inventors: MOTEKI, Masatoshi; (JP).
TAKAHASHI, Osamu; (JP)
Agent: SUZUKI, Kisaburo; Intellectual Property Dept. Seiko Epson Corporation 3-5, Owa 3-Chome Suwa-Shi Nagano 392-8502 (JP)
Priority Data:
10/326821 17.11.1998 JP
Title (EN) ELECTRONICALLY CONTROLLED MECHANICAL TIMEPIECE
(FR) PIECE D'HORLOGERIE MECANIQUE A COMMANDE ELECTRONIQUE
Abstract: front page image
(EN)A gap (h) between a rotor inertia plate (12c) and stators (123, 133) is set such that the load torque produced by air viscosity resistance between these parts is not more than 1/10 of the maximum output torque at the rotor. Therefore, the load torque is sufficiently reduced, making it possible to keep down the energy loss of the spring and prolong the duration of the timepiece.
(FR)Un espace (h) entre une plaque d'inertie de rotor (12c) et des stators (123, 133) est défini de sorte qu'un couple de charge produit par la résistance à la viscosité de l'air entre ces pièces n'est pas supérieure à 1/10 du couple de sortie maximum au niveau du rotor. En conséquence, le couple de charge est suffisamment réduit, ce qui permet de réduire les pertes d'énergie du ressort et prolonge la durée de vie de la pièce d'horlogerie.
Designated States: CN, JP, US.
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)