Pressure-biased, temperature sensor

Details Pressure-biased, temperature sensor Pressure-biased, temperature sensor

1986-08-01

1987-05-05

Crosland, Donnie L.

Communications: electrical

Selective

Having indication or alarm

340611, 340614, 340626, 340 59, 731181, 73708, 73714, 73729, 374203, 374145, 374146, 200 83C, 200 83D, B60Q 100

Patent

active

046636080

ABSTRACT:
A pressure-biased, temperature sensor means utilizing a cooperating pair of aligned bellows operators in a chamber communicating with a fluid system. One of the bellows expanding in response to an elevated temperature of said fluid and the second bellows expanding in response to a decrease in fluid pressure. Both of the bellows operate to move a diaphragm operator to close a switch means in a signal circuit thereby completing the circuit and energizing a signal means.

REFERENCES:
patent: 766820 (1904-08-01), Fulton
patent: 1815642 (1931-07-01), Zubaty
patent: 1933453 (1933-10-01), Schlaich
patent: 2943167 (1960-06-01), Hughes et al.
patent: 3338099 (1967-08-01), Remick, Jr. et al.
patent: 3439356 (1969-04-01), Kinzer
patent: 3472077 (1969-10-01), Bucalo
patent: 3852546 (1974-12-01), Maxwell, Jr. et al.
patent: 4051728 (1977-10-01), Metz
patent: 4237354 (1980-12-01), Rockenfeller et al.

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