Circuit breaker operating mechanism having a collapsible contact

Details Circuit breaker operating mechanism having a collapsible contact Circuit breaker operating mechanism having a collapsible contact

1998-10-22

2000-05-30

Scott, J. R.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Contact-actuating means

200401, 335189, 335191, H01H 300

Patent

active

060695447

ABSTRACT:
A collapsible contact arm drive link arrangement for a circuit breaker operating mechanism has a pair of upper links for receiving the circuit breaker operating mechanism and a lower link for receiving a circuit breaker contact arm carrier at one end. Intermediate the upper links and the lower link, a scissors link, which is connected with the upper links and lower link, allows the lower link to move from a first position (e.g., closed) to a second position (e.g., tripped). The movement occurs upon the application of a force on the lower link in excess of a predetermined force that is applied to the upper links.

REFERENCES:
patent: 3073936 (1963-01-01), Baird
patent: 4001742 (1977-01-01), Jencks et al.
patent: 4023127 (1977-05-01), Mune
patent: 4114123 (1978-09-01), Grenier
patent: 4581181 (1986-04-01), Nicholls
patent: 4801907 (1989-01-01), Kelaita, Jr. et al.
patent: 5424701 (1995-06-01), Castonguay et al.

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