Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Automatic circuit-interrupting devices
Patent
1985-04-18
1986-10-28
Hix, L. T.
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Automatic circuit-interrupting devices
335173, H01H 7300
Patent
active
046201718
ABSTRACT:
A molded case circuit breaker includes a manually resettable undervoltage trip mechanism for initiating a trip operation of the circuit breaker upon an undervoltage condition. The undervoltage trip mechanism includes a solenoid having a fixed electrical coil surrounding a pair of separable movable ferromagnetic plungers. Disposed between and captured by the two plungers is a compression spring for physically separating the two plungers upon the occurrence of an undervoltage condition. Upon such an undervoltage condition, one of the plungers is positioned to engage and rotate a trip lever for initiating a trip operation of the circuit breaker. The other plunger is secured to an elongated manually depressible reset button that extends through the molded case of the circuit breaker. After a trip operation, the reset button can be depressed to reestablish physical engagement between the first and second plungers, enabling the circuit breaker to be reset.
REFERENCES:
patent: 2186251 (1940-01-01), Lindstrom
patent: 2492009 (1949-12-01), Sandin et al.
patent: 2697148 (1954-12-01), Slebodnik
patent: 2757321 (1956-07-01), Wallace et al.
patent: 2991799 (1961-07-01), Littlefield
patent: 3239638 (1966-03-01), Gryctko et al.
patent: 3525959 (1968-12-01), Ellsworth et al.
patent: 3590325 (1971-06-01), McMillen
patent: 3614685 (1971-10-01), Ellsworth
patent: 3775713 (1973-11-01), Walker et al.
patent: 3783423 (1974-01-01), Mater et al.
patent: 3805199 (1974-04-01), Tazuki
patent: 3815059 (1974-06-01), Spoelman
patent: 3863042 (1975-01-01), Nicol
patent: 4077025 (1978-02-01), Slade et al.
patent: 4166205 (1979-08-01), Maier et al.
patent: 4258403 (1981-03-01), Shimp
patent: 4295025 (1981-10-01), Beatty, Jr. et al.
Brown Brian W.
Hix L. T,.
Westinghouse Electric Corp.
Yatsko M. S.
LandOfFree
Molded case circuit breaker with resettable combined undervoltag does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Molded case circuit breaker with resettable combined undervoltag, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Molded case circuit breaker with resettable combined undervoltag will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1349090