Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Automatic circuit-interrupting devices
Patent
1994-01-13
1997-10-21
Donovan, Lincoln
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Automatic circuit-interrupting devices
335147, 335195, 218 22, H01H 7500
Patent
active
056800819
ABSTRACT:
A circuit breaker includes a first section and a second section with independently operating pairs of contact assemblies in each respective section. In the first section, at least one of the contact assemblies is constructed and arranged to interrupt the current by moving from a normally closed position to a blown-open position and latching with the contact assemblies separated. The second section has a biasing extension spring for biasing the contact assemblies of the second section so as to permit interruption of the current in response to a blow-open force, which causes the contacts to separate only momentarily and then return to a normally closed position. The first and second pairs of contact assemblies separate substantially simultaneously in response to the blow-open force, and only the first section reacts to lower-level over-current conditions. In addition to the contact assemblies, the second section of the circuit breaker is designed to operate using only a spring which is "Z-axis" mountable. Other aspects of the invention include one-piece tripping actuator, a screw retainer assembly for securing the line or load terminal, a bimetal arrangement involving an improved calibration process and an associated stress-reducing line terminal.
REFERENCES:
patent: 3943316 (1976-03-01), Oster
patent: 3943482 (1976-03-01), Oster et al.
patent: 3944953 (1976-03-01), Oster
patent: 3946346 (1976-03-01), Oster et al.
patent: 4417223 (1983-11-01), Bancalari
patent: 4740768 (1988-04-01), Morris et al.
patent: 5003139 (1991-03-01), Edds et al.
patent: 5073764 (1991-12-01), Takahashi et al.
patent: 5075657 (1991-12-01), Rezac et al.
patent: 5097589 (1992-03-01), Rezac et al.
patent: 5159304 (1992-10-01), Yamagata et al.
patent: 5245302 (1993-09-01), Brune et al.
Bennett Dale W.
Scheel Jerry L.
Siebels Randall L.
Sortland Matthew D.
Winter John M.
Donovan Lincoln
Golden Larry I.
Irfan Kareem M.
Square D Company
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