Molded case circuit breaker with low friction latch arrangement

Details Molded case circuit breaker with low friction latch arrangement Molded case circuit breaker with low friction latch arrangement

1991-05-16

1992-08-25

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Latching means

335 22, H01H 920

Patent

active

051422590

ABSTRACT:
The secondary latch of a molded case circuit breaker latching arrangement is formed from a latching pin assembly with a solid metal latching sphere rotatably mounted at one end thereof. The latching sphere contacts the operating mechanism latching plate to provide a low-friction latching force to the circuit breaker operating mechanism. The latching sphere contacts the latching plate and is continuously lubricated by means of a lubrication reservoir integrally-formed within the latch pin assembly.

REFERENCES:
patent: 2057380 (1936-10-01), Keefe
patent: 3488611 (1970-01-01), Harper
patent: 3810051 (1974-05-01), Walker et al.
patent: 4472698 (1984-09-01), Siffroi et al.
patent: 4550300 (1985-10-01), Jencks et al.
patent: 4911624 (1990-03-01), Bagepalli

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