Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – With motor
Patent
1989-03-20
1990-02-13
Broome, H.
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
With motor
335 27, 337 71, 337140, H01H 7348, H01H 7116, H01H 6108
Patent
active
049010450
ABSTRACT:
A circuit breaker having a fixed current contact (12,14), a movable current contact (16,18), a mechanism (20,22,54,66,68) for displacing the movable current contact (16,18) between a circuit closing position and a circuit opening position, and a latching member (32,34) disposed to cooperate with the mechanism (20,22,54,66,68) and movable in response to the magnitude of current flowing through the circuit to be controlled in order to cause the mechanism (20,22,54,66,68) to move the movable contact (16,18) in a manner to open the circuit when the magnitude of current flow exceeds a certain value, movement of the latching member (32,34) being controlled by a memory metal element (40,42) which is mechanically connected to the latching member (32,34) and electrically connected in the circuit to be heated by current flowing through the circuit to cause the latching member (32,34) to release the mechanism (20,22,54,66,68) when the current flowing through the circuit exceeds a given value for a selected period of time. The circuit breaker is further provided with a remotely located control unit (140-166 ) which is coupled to the circuit breaker mechanism (20,22,54,66,68) by a cable (78).
The circuit breaker is further provided with an emergency locking device (180,188) which is manually movable into a locking position for preventing the mechanism (20,22,54,66,68) from moving upon being released by the latching member (32,34).
REFERENCES:
patent: 3670129 (1972-06-01), Cherry et al.
patent: 3674962 (1972-07-01), Kroeger
patent: 3676815 (1972-07-01), Du Rocher
patent: 3961481 (1976-06-01), Romanenko et al.
patent: 4000480 (1976-12-01), Gray et al.
patent: 4028513 (1977-06-01), Laubach
patent: 4044215 (1977-08-01), Leibinger et al.
patent: 4128750 (1978-12-01), Castonguay et al.
patent: 4168417 (1979-09-01), Puetz et al.
patent: 4181838 (1980-01-01), Neuser et al.
patent: 4205293 (1980-05-01), Melton et al.
patent: 4275370 (1981-06-01), Sims
patent: 4421959 (1983-12-01), Chen et al.
patent: 4427862 (1984-01-01), Lin
patent: 4459445 (1984-07-01), Hisatsune et al.
patent: 4524343 (1985-07-01), Morgan et al.
patent: 4538039 (1985-08-01), Gotoh et al.
patent: 4544811 (1985-10-01), Brevick
patent: 4616206 (1986-10-01), Bridges et al.
patent: 4626638 (1986-12-01), Samples et al.
Broome H.
Studebaker B. R.
Westinghouse Electric Corp.
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