Emergency stop relay combination

Details Emergency stop relay combination Emergency stop relay combination

2004-09-30

2008-08-26

Enad, Elvin (Department: 2832)

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Contact-actuating means

C335S185000

Reexamination Certificate

active

07417519

ABSTRACT:
A switching apparatus and method, the apparatus comprising a relay including a relay coil and at least one normally open relay contactor that closes when the relay coil is energized, a normally closed stop contactor and a stop member moveable between a deactivated position in which the stop contactor is closed and an activated position wherein the stop member forces each of the stop contactor and the relay contactor open.

REFERENCES:
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patent: 5526256 (1996-06-01), Sakata et al.
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patent: 6272001 (2001-08-01), Futsuhara
patent: 6301091 (2001-10-01), Zomchek et al.
patent: 6304189 (2001-10-01), Koch et al.
patent: 6686672 (2004-02-01), Brown et al.
patent: 6734581 (2004-05-01), Griffis
patent: 6882155 (2005-04-01), Lazzaro

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