Sequential close interlock arrangement for high ampere-ratedcirc

Details Sequential close interlock arrangement for high ampere-ratedcirc Sequential close interlock arrangement for high ampere-ratedcirc

1994-06-27

1996-05-28

Walczak, David J.

Electricity: circuit makers and breakers

Toggle mechanisms

200400, H01H 2300

Patent

active

055213464

ABSTRACT:
This invention relates to a high ampere-rated circuit breaker which meets the electrical code requirements of the world market. The charging of the powerful operating springs controlling the circuit breaker contacts is made manually by means of a ratchet and pawl assembly. A two stage latching arrangement controls the retention and release of the pawl to retain and discharge the operating springs. The latches are interlocked with the operating springs drive shaft to prevent the discharge of the operating springs when the contacts are in the closed condition.

REFERENCES:
patent: 3689721 (1972-09-01), McGuffie
patent: 4001742 (1977-01-01), Castonguay et al.
patent: 4324960 (1982-04-01), Maier et al.
patent: 4491814 (1985-01-01), Bellows
patent: 4641001 (1987-02-01), Fujihisa et al.
Castonguay et al, "Operating Mechanism for High Ampere-rated Circuit"; U.S. Ser. No.: 08/202,140 (Docket: 41PR-7116)-Filed Feb. 24, 1995.
Castonguay et al, "Handle Operator Assembly for High Ampere-rated Circuit Breaker" U.S. Ser. No.: 08/214,522 (Docket: 41PR-7130)-Filed Mar. 18, 1994.
Castonguay et al, "A Latching Arrangement for High-rated Circuit Breaker Operating Springs"; U.S. Ser. No.: 08/218,287(Docket:41PR-7131)-Filed Mar. 18, 1994.
Castonguay et al, "Rating Module Unit for HIgh Ampere-rated Circuit Breaker" U.S. Ser. No.: 08/203,062 (Docket:41PR-7124) Filed Feb. 28, 1994.

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