Electricity: circuit makers and breakers – Float – Float and pressure
Patent
1985-12-02
1988-05-03
Pellinen, A. D.
Electricity: circuit makers and breakers
Float
Float and pressure
2003021, 200 67B, 200 814, 335206, 335207, H01H 904
Patent
active
047421959
ABSTRACT:
A process instrument enclosed in a hermetically sealed housing for indicating and controlling a measured variable, such as the level in a tank. The instrument includes magnetically operated electrical switches actuable between open and closed positions in response to the measured variable. The electrical switches used are capable of switching current levels on the order of 10 Amps.
REFERENCES:
patent: 1854316 (1932-04-01), Teesdale
patent: 2612572 (1952-09-01), Binford
patent: 2840657 (1958-06-01), Roeser
patent: 4066858 (1978-01-01), Piper
patent: 4243857 (1981-01-01), Reis
patent: 4335285 (1982-06-01), West
Bryant Cal L.
Francoeur Dennis E.
Janitch Paul G.
Vrona David W.
Magnetrol International Incorporated
Pellinen A. D.
Williams H. L.
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