ELECTROMAGNETIC CONTACTOR
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United States of America Patent
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app pub date -
Oct 7, 2014
filing date -
Jun 8, 2012
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Abandoned
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Abstract
The electromagnetic contactor includes a contact device having a pair of fixed contacts disposed to maintain a predetermined distance and a movable contact disposed so as to be attachable to and detachable from the pair of fixed contacts; an electromagnet unit having a movable plunger that moves the movable contact of the contact device; a hermetic chamber enclosing the pair of fixed contacts, the movable contact, and the movable plunger; an external receptacle that covers the hermetic chamber and electromagnet unit; and a sound insulating resin layer injected and hardened between the hermetic chamber and external receptacle. The electromagnetic contactor reduces the height of a contact device, and thus reduces a size of the electromagnetic contactor, while suppressing electromagnetic repulsion force generated between a movable contact and fixed contacts.
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