Micro motor for a timepiece

Details Micro motor for a timepiece Micro motor for a timepiece

1975-04-09

1977-03-22

Weldon, Ulysses

Electrical generator or motor structure

Dynamoelectric

Rotary

310 40MM, 58 23R, G04C 300

Patent

active

040128997

ABSTRACT:
A micro motor for a timepiece comprises a curved magnetic core, a coil winding wound on the magnetic core, a stator connected to the magnetic core to define therewith a closed magnetic flux path and having an opening therein in which a rotor is rotatably disposed. The stator comprises a pair of stator pieces each connected at one end to a respective end portion of the curved magnetic core and the stator pieces have curved portions extending at least partly along the curvature of said curved magnetic core to thereby form a compact overall assembly.

REFERENCES:
patent: 746903 (1903-12-01), Uytenbogaart
patent: 1955588 (1934-04-01), Knopp
patent: 1992826 (1935-02-01), Karasawa
patent: 2155266 (1939-04-01), Hansen et al.
patent: 2793307 (1957-05-01), Gallagher
patent: 3403272 (1968-09-01), Dold

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