Trip-free, three-link switch assembly

Details Trip-free, three-link switch assembly Trip-free, three-link switch assembly

1987-08-06

1988-12-13

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Operating means

200153SC, 335189, 335172, H01H 300

Patent

active

047912502

ABSTRACT:
A switch assembly especially suitable for use as part of an overall electrical circuit breaker is disclosed herein. This switch assembly includes a three-link arrangement consisting of three links interconnected together for movement between a first positional configuration in order to open a circuit and a second positional configuration in order to close and circuit. A mechanism is provided for applying a force to the linkage arrangement in a way which causes the links to open from a closed position, that is, to move from their first positional configuration to their second positional configuration, and thereafter for maintaining the links in their open configuration. An arrangement separate from the force-applying mechanism and including one of the three links is also provided for automatically overriding the application of force to the three-link arrangement in order to cause the links to immediately move back to their opened configuration, either during movement to their closed configuration, or after the links have been closed by the force-applying mechanism. In other words, the switch disclosed herein can be tripped back to its open position at any time.

REFERENCES:
patent: 3457531 (1969-07-01), Goodwin, Jr.
patent: 4591678 (1986-05-01), Yin
patent: 4591679 (1986-05-01), Yamat et al.

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