Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Automatic circuit-interrupting devices
Patent
1977-07-20
1979-01-16
Harris, George
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Automatic circuit-interrupting devices
335157, 335193, H01H 7500
Patent
active
041351355
ABSTRACT:
A single pole molded case circuit breaker having a spring powered trip free contact operating mechanism including an extendable toggle connected at one end to a releasable cradle and connected at the other end to a movable contact, a latch for holding the cradle in reset position, and an automatic trip means for operating the latch to release the cradle upon the occurrence of predetermined overload conditions, is provided with anti-rebound means which prevents the movable contact from moving toward closed circuit position except under the influence of the operating mechanism. The anti-rebound means includes a single resilient member which is positioned to block the toggle from being extended unless the cradle is in its reset position.
REFERENCES:
patent: 2932706 (1960-04-01), Bodenschatz
patent: 3072764 (1963-01-01), Frink
patent: 3263042 (1966-07-01), Dyer et al.
Gould Inc.
Harris George
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