Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Multiple contact type
Patent
1989-03-08
1990-08-07
Picard, Leo P.
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Multiple contact type
335251, H01H 6702
Patent
active
049471465
ABSTRACT:
An electromagnetic contactor is formed by disposing an inner yoke to oppose at an end to a pole-contacting member provided at an end of an armature in an electromagnet block, disposing the outer yoke to oppose at an end to the said end of the inner yoke so as to restrict the displacement of the pole-contacting member and at the other end to a plunger part of the armature perpendicularly and closely thereto, and inserting a magnetic cylinder into an axial through hole of a coil bobbin of the electromagnet block for passing therethrough the plunger part from the side of the said other end of the outer yoke, whereby any leak of magnetic flux due to coil excitation and that of a permanent magnet disposed between the both yokes can be restrained to be the minimum and a highly efficient operation of the contactor can be realized.
REFERENCES:
patent: 4290039 (1981-09-01), Tochizawa
patent: 4509026 (1985-04-01), Matsushita
patent: 4734669 (1988-03-01), Maenishi et al.
Aoyama Youichi
Ichimura Yasuo
Kawasaki Kenji
Matsushita Hidetoshi
Donovan Lincoln
Klockner-Moeller Elektrizitats-GmbH
Matsushita Electric & Works Ltd.
Picard Leo P.
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