Electrical switch

Details Electrical switch Electrical switch

1994-04-04

1995-12-12

Kashnikow, Andres

Electricity: circuit makers and breakers

Electric switch details

Contact

200260, 200252, 200254, H01H 144

Patent

active

054751918

ABSTRACT:
An electrical switch (10) or fused switch for electrical distribution systems has a housing (12, 14); first and second spaced apart straps (16, 18), coupled to the housing; and a pair of opposed blades (22, 24) pivotally coupled to the first strap and straddling both straps. The blades (22, 24) are capable of relative pivotal movement from an open position spaced from the second strap to a closed position in contact therewith. A blade extension (30) is coupled to the blades between the straps. The switch has first and second biasing elements (26, 28), which may be leaf springs, each coupled to a respective blade, each of which biases the respective blade toward the first and second straps at a first bias force level when the respective blade is in the closed position and at a second, lower bias force level when the respective blade is in the open position. A fastener (32) slidably passes through each of the blades, the blade extension and the biasing elements.

REFERENCES:
patent: 2193122 (1940-03-01), Crabbs
patent: 2747060 (1956-05-01), Ballou
patent: 3137778 (1964-06-01), Barr

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