Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Automatic circuit-interrupting devices
Patent
1997-12-18
1999-01-26
Donovan, Lincoln
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Automatic circuit-interrupting devices
335167, 335 23, 335202, H01H 7512
Patent
active
058642668
ABSTRACT:
A reverse deflection prevention arrangement is provided for use in a circuit breaker for preventing a bimetal from bending in a direction opposite its normal thermal deflection. The reverse deflection prevention arrangement includes a tab portion extending from a yoke and a corresponding block member disposed on the inside surface of a circuit breaker cover. The tab portion engages the block member when the bimetal is forced to deflect in the direction opposite its normal deflection. An alternate embodiment of the reverse deflection prevention arrangement includes a reinforcement member secured to one end of the bimetal. The reinforcement member strengthens and supports the bimetal so that it is prevented from bending in the direction opposite its normal thermal deflection.
REFERENCES:
patent: 3162739 (1964-12-01), Klein et al.
patent: 3487343 (1969-12-01), Myers et al.
patent: 4156219 (1979-05-01), Coleman
Mickelson Scott A.
Schill Ardean G.
Siebels Randall L.
Wehr Eugene W.
Donovan Lincoln
Golden Larry I.
Irfan Kareem M.
Square D Company
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