Condition indicating device for a puffer type load break switch

Details Condition indicating device for a puffer type load break switch Condition indicating device for a puffer type load break switch

1981-09-29

1983-04-05

Yasich, Daniel M.

Signals and indicators

Indicators

Fluid flow

73729, 200308, G01L 1912, H01H 900

Patent

active

043787517

ABSTRACT:
An easily visible condition indicating device to signify a lack of pressure within the envelope of an electrical interrupter of the type utilizing a pressurized-gas environment. The system includes a rotatable drum contained within a housing having an aperture through which the drum is viewed. When pressure within the interrupter drops a spring-biased bellows collapses, causing the withdrawal of stops which hold the drum in place against spring tension. This allows a biasing spring to rotate the drum so that a different portion thereof, such as a different colored segment, is viewed through the housing aperture in order to provide a visual indication of a low-pressure condition.

REFERENCES:
patent: 2373055 (1945-04-01), Schier
patent: 3247824 (1966-04-01), Rodgers
patent: 3411533 (1968-11-01), Puster
patent: 4029041 (1977-06-01), Genshpring
patent: 4107492 (1978-08-01), Moon, Jr. et al.
patent: 4139466 (1979-02-01), Rosaen
patent: 4237354 (1980-12-01), Rockerfeller et al.
patent: 4245579 (1981-01-01), Bensemann
patent: 4250476 (1981-02-01), Evans et al.

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