Wear indicator for a circuit interrupter exhaust control device

Details Wear indicator for a circuit interrupter exhaust control device Wear indicator for a circuit interrupter exhaust control device

2010-11-19

2011-12-27

Vortman, Anatoly (Department: 2835)

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

C337S249000, C337S273000, C337S272000, C337S281000, C218S157000

Reexamination Certificate

active

08085123

ABSTRACT:
An exhaust control device includes a wear indicator disposed within a housing of the exhaust control device. The wear indicator is arranged to be exposed to a flow of exhaust gas through the exhaust control device. The wear indicator has a first observable state indicative of remaining useful life of the exhaust control device. The wear indicator is responsive to a flow of exhaust gas through the exhaust control device to assume a second observable state indicative of the exhaust control device having reached the end of its useful life.

REFERENCES:
patent: 4206308 (1980-06-01), Murakami et al.
patent: 4339207 (1982-07-01), Hof et al.
patent: 4464064 (1984-08-01), D'Luzansky
patent: 4538926 (1985-09-01), Chretien
patent: 5738442 (1998-04-01), Paron et al.

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