Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1980-12-29
1982-12-28
Little, Willis
Electricity: circuit makers and breakers
Liquid contact
Time delay
200153SC, 200 73, H01H 332
Patent
active
043663540
ABSTRACT:
A circuit breaker has contacts engageable as a result of manual operation of a toggle mechanism causing the circuit breaker to close and open when the toggle is in an erect and collapsed condition, respectively. A push-off spring is used to bias a moveable contact away from a stationary contact to accelerate movement of the moveable contact during opening of the circuit breaker. Minimal manual effort is required to close the circuit breaker while providing greatly increased pressure for accelerating opening of the circuit breaker through use of a unique push-off spring which provides a first, lower, degree of resistance to closing of the contacts during the initial operation of the circuit breaker while providing a second, higher, degree of resistance to closing of the contacts after the initial operation. Manual closing of the circuit breaker is unimpeded by the second, higher, degree of resistance after the initial operation of the breaker.
REFERENCES:
patent: 2418556 (1947-04-01), Miller et al.
patent: 2863963 (1958-12-01), Johnson
patent: 2923788 (1960-02-01), Norden
patent: 3581261 (1971-05-01), De Torre et al.
patent: 3610856 (1971-10-01), De Torre
Federal Pacific Electric Company
Hollander Roy F.
Little Willis
Stanley Ronald R.
LandOfFree
Circuit breaker with improved contact push-off spring does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Circuit breaker with improved contact push-off spring, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit breaker with improved contact push-off spring will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1338582