Fully rated contact system having normally open contact and normally closed contacts
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United States of America Patent
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Feb 18, 2014
Grant Date -
Dec 5, 2013
app pub date -
May 31, 2012
filing date -
May 31, 2012
priority date (Note) -
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Abstract
A contact system includes at least one first contact, at least one second contact, and at least one movable contact. A coil is provided which, when energized generates a force. A magnet is also provided, the magnet having a magnetic force. The forces of the coil and magnet attract the at least one movable contact to the at least one first contact. A return spring having a spring force cooperates with the at least one movable contact to return the at least one movable contact to the at least one second contact when the coil is not energized. The sum of the forces applied by the coil and the magnet are sufficient to overcome the spring force of the return spring to provide a balanced force to both the at least one second contact and the at least one first contact.
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