Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Polarity-responsive
Patent
1986-10-02
1988-02-23
Broome, Harold
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Polarity-responsive
335 81, 335229, H01H 5122
Patent
active
047273445
ABSTRACT:
A polarized relay with an electromagnetic drive comprises an electromagnetic yoke composed of a core wound with a coil and a yoke body, and having one end portion of one magnetic polarity and a pair of bifurcated end portions of the other magnetic polarity opposite to the one magnetic polarity. The bifurcated end portions are separated in opposition from each other. The one end portion of the yoke is disposed between the bifurcated end portions so as to cooperate to form a pair of working gaps. A movable block of a substantially C-like configuration incorporating a permanent magnet has two magnetic pole pieces which are disposed within the working gaps, respectively. Guide is provided for guiding the movable block in response to energization and deenergization of the coil so that the pole pieces are movable within the respective working gaps. A contact mechanism including movable contacts is mechanically coupled to the movable block to make or break circuit.
REFERENCES:
patent: 4142166 (1979-02-01), Arnoux
patent: 4563663 (1986-01-01), Niekawa et al.
Honda Sueaki
Kashimoto Shuichi
Koga Hirofumi
Maenishi Kozo
Sano Takezo
Broome Harold
Omron Tateisi Electronics Co.
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