Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – With bimetallic elements
Patent
1984-09-28
1986-12-16
Gellner, Michael L.
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
With bimetallic elements
337 77, 337 82, 335 45, H01H 7116
Patent
active
046300198
ABSTRACT:
A molded case circuit breaker includes a new and improved calibration adjusting means for a bimetal in a trip mechanism. The trip mechanism also includes a bimetal having a portion movable in response to predetermined overload conditions, an intermediate control lever for adjusting the spatial disposition of the movable portion of the bimetal with respect to a trip bar of the trip mechanism and a rotatable adjustment means for adjusting the spatial disposition of the intermediate control lever in the circuit breaker. By rotating the adjustment means, the distance between the movable portion of the bimetal and the trip bar can be precisely adjusted via the intermediate control lever. The intermediate control lever is coupled to a relatively stationary portion of the bimetal thereby enabling such adjustment without applying undue stress to the movable portion of the bimetal.
REFERENCES:
patent: 2186251 (1940-01-01), Lindstrom
patent: 2492009 (1949-12-01), Sandin et al.
patent: 2679562 (1954-05-01), Drobney et al.
patent: 3239638 (1966-03-01), Gryctko et al.
patent: 3257526 (1966-06-01), Ramsey et al.
patent: 3525959 (1970-08-01), Ellsworth et al.
patent: 3590325 (1971-06-01), McMillen
patent: 3614685 (1971-10-01), Ellsworth
patent: 3775713 (1973-11-01), Walker et al.
patent: 3783423 (1974-01-01), Mater et al.
patent: 3805199 (1974-04-01), Tazuki
patent: 3815059 (1974-06-01), Spoelman
patent: 3863042 (1975-01-01), Nicol
patent: 3959695 (1976-05-01), Shimp
patent: 4077025 (1978-02-01), Slade et al.
patent: 4166205 (1979-08-01), Maier et al.
patent: 4258403 (1981-03-01), Shimp
patent: 4295025 (1981-10-01), Beatty, Jr. et al.
Farley James R.
Maier Alfred E.
Brown Brian W.
Buleza D. S.
Gellner Michael L.
Westinghouse Electric Corp.
LandOfFree
Molded case circuit breaker with calibration adjusting means for does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Molded case circuit breaker with calibration adjusting means for, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Molded case circuit breaker with calibration adjusting means for will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-247249