Electricity: circuit makers and breakers – Electric switch details – Cases and bases
Patent
1999-08-18
2000-07-04
Friedhofer, Michael
Electricity: circuit makers and breakers
Electric switch details
Cases and bases
361634, 439810, 439814, 335202, H01H 100, H02B 104, H01R 428
Patent
active
060841885
ABSTRACT:
A molded case circuit breaker having separable main contacts and an operating mechanism utilized to cause the separable main contacts to open and close. A trip unit is provided to actuate the operating mechanism in desirable circumstances. The circuit breaker has external terminals which are connectable with an external load and an external power supply. A collar is used to interconnect the circuit breaker terminals with the load and power supply. The terminal collar in this case is non-symmetrical. The non-symmetrical collar provides two functions: the first function is that the path of electrical continently between adjacent collars is enlarged for higher voltage applications because of the non-symmetrical nature of each collar; secondly, the circuit breaker case has a seat therein which has the same cross-section as the non-symmetrical collar, so that the collar can only be inserted therein in one cross-sectional orientation.
REFERENCES:
patent: 3748420 (1973-07-01), Rexroad
patent: 5005104 (1991-04-01), Grunert
patent: 5107396 (1992-04-01), Rosen et al.
patent: 5150091 (1992-09-01), Hart et al.
patent: 5206789 (1993-04-01), Barbry
patent: 5493092 (1996-02-01), Rowe
patent: 5910760 (1999-06-01), Malingowski
patent: 5978208 (1999-11-01), Helms et al.
Mueller Robert W.
Sumpman Wayne C.
Whitaker Thomas A.
Eaton Corporation
Friedhofer Michael
Moran Martin J.
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