Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Contact-actuating means
Patent
1977-02-08
1978-11-07
Broome, Harold
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Contact-actuating means
335173, 337 66, H01H 302, H01H 312
Patent
active
041248333
ABSTRACT:
Electrical on-off switching system, particularly for process control, having a bimodal operation with a first operational, low current, mode response and second emergency, high current, mode, comprising multiple sets of switch contacts and separate linkages for the first and second modes arranged such that the spreading of switch contacts for electrical circuit interruption is less in the first mode than in the second and further comprising a snap action in both modes of operation and non-interference between the linkages providing the two modes of operation.
REFERENCES:
patent: 1925836 (1933-09-01), Johnsson
Broome Harold
Cohen Jerry
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