Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Automatic circuit-interrupting devices
Patent
1991-07-25
1992-06-30
Donovan, Lincoln
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Automatic circuit-interrupting devices
335172, 335167, H01H 7512
Patent
active
051267080
ABSTRACT:
A molded case circuit interrupter of the type employing a thermal-magnetic trip unit to interrupt circuit current utilizes a flexible electrical braid conductor to connect between the thermal-magnetic trip unit and the movable contact arm. A helical spring arranged around the braid conductor at the welded connection with the movable contact arm provides long-term strain relief. A metal phosphate coating on the surface of the circuit breaker operating cradle and latch assembly eliminates polishing while insuring release of the cradle from the cradle-latch interface surfaces.
REFERENCES:
patent: 3702387 (1972-11-01), Klein
patent: 4174563 (1979-11-01), Simpson
patent: 4583065 (1986-04-01), Favre-Tissot
Bernier Richard E.
Castonguay Roger N.
Palaia Franklin P.
Palmieri Joseph M.
Pannenborg Erich J.
Donovan Lincoln
General Electric Company
Jacob Fred
Menelly Richard A.
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