Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
Patent
1982-05-26
1985-10-08
Schwadron, Martin P.
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
With magneto-mechanical motive device
335272, 25112911, 25112912, 13762547, H01F 708, F16K 3104
Patent
active
045463387
ABSTRACT:
A rotary driving apparatus suitable for use for a flow control valve provided with a rotor valve rotatably mounted in a housing. The rotor valve is connected to a permanent magnet member. The permanent magnet member is arranged adjacent to a pair of diametrically spaced ends of a core on which a coil is wound so that the ends are oppositely magnetized to provide a two pole electric motor, stopper means is provided for allowing limited rotary motion of the rotor between a first position and a second position. The permanent magnet member is so arranged with respect to the ends of the core that a torque is, during the de-energization of the coil, generated in order to engage the stopper means. Thus, the first or second position of the rotor valve is maintained without energization of the coil.
REFERENCES:
patent: 2360599 (1944-10-01), Volpin
patent: 4227164 (1980-10-01), Kitahara
patent: 4345228 (1982-08-01), Idogaki et al.
Hattori Kyo
Idogaki Takaharu
Kawai Hisasi
Kosuda Tooru
Sakurai Kazuhiro
Nippon Soken Inc.
Schwadron Martin P.
Starsiak Jr. John S.
Toyota Jidosha Kogyo Kabushiki Kaisha
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