Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1974-11-08
1976-08-03
Scott, James R.
Electricity: circuit makers and breakers
Liquid contact
Time delay
200 50AA, 200289, 317100, H01H 3300, H01H 162, H01H 952, H02B 100
Patent
active
039730964
ABSTRACT:
An improved adjustable circuit-interrupter is provided capable of withstanding the forces of high momentary currents, while utilizing easily-made parts, many of which are common for different-rating breakers. The circuit-interrupter arrangement provides more rigidity than prior-art interrupter arrangements, and is capable of withstanding the tremendous lateral forces encountered and associated with high momentary currents passing through the interrupter. The arrangement represents a substantial cost reduction, when compared with the solid-insulation-type of pole-unit interrupter currently in production. A support-rod provides a means of adjustment of the height of the primary disconnecting contact fingers of the device, and eliminates the necessity of many critical dimensions on the pole-unit without compromising the ability of the roll-in-type circuit-interrupter to "plug" into a standard cubicle, or cell.
An additional upper support-rod may be provided to provide an additional means of adjustment for the height of the upper primary disconnecting contact finger assembly, and additionally provides a positive clamp for a vacuum-type circuit-interrupting element, when the latter is selected as the desired interrupting means.
REFERENCES:
patent: 3167629 (1965-01-01), Cobine
patent: 3274356 (1966-09-01), Godfrey
patent: 3356902 (1967-12-01), Blaikie
patent: 3783208 (1974-01-01), Davies et al.
patent: 3793494 (1974-02-01), Cleaveland
Crout W. R.
Scott James R.
Westinghouse Electric Corporation
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