Mechanically latched device

Claim 1

A MECHANICALLY HELD ELECTROMAGNETICALLY OPERATED DEVICE COMPRISING; A BASE; A PLURALITY OF INDIVIDUAL CONTACT UNITS INDEPENDENTLY SECURED TO SAID BASE EACH HAVING CO-OPERATING MOVABLE AND STATIONARY CONTACTS THEREIN; A CONTACT OPERATING ARM CONNECTED TO SIMULTANEOUSLY MOVE ALL OF SAID MOVABLE CONTACTS TO THEIR OPERATED AND UNOPERATED POSITIONS; A FIRST ELECTROMAGNET SECURED TO SAID BASE TO EFFECT MOVEMENT OF SAID CONTACT OPERATING ARM AND WHEN ENERGIZED TO MOVE SAID MOVABLE CONTACTS TO THEIR OPERATED POSITIONS; A LATCH MECHANISM SECURED TO SAID BASE AND BIASED TO ENGAGE SAID CONTACT OPERATING ARM WHEN SAID MOVABLE CONTACTS ARE IN THEIR OPERATED POSITION AND TO MAINTAIN THEM OPERATED UPON SUBSEQUENT DEENERGIZATION OF SAID FIRST ELECTROMAGNET; A SECOND ELECTROMAGNET SECURED TO SAID BASE AND ASSOCIATED WITH SAID LATCH MECHANISM TO BE EFFECTIVE, WHEN ENERGIZED, TO MOVE SAID LATCH MECHANISM AGAINST ITS BIAS AND TO RELEASE SAID CONTACT OPERATING ARM AND THEREBY ALLOW SAID CONTACT OPERATING ARM TO RETURN SAID MOVABLE CONTACTS TO THEIR UNOPERATED POSITION.