Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1985-03-11
1986-07-22
Rowland, James L.
Communications: electrical
Condition responsive indicating system
Specific condition
73170R, 73384, 340626, G08B 2100
Patent
active
046022481
ABSTRACT:
The atmospheric pressure actuated alarm of the present invention comprises a pressure transducer which senses the atmospheric pressure and produces an electrical transducer signal in response thereto. A difference amplifier is connected to the pressure transducer for measuring the transducer signal and for producing an output signal whenever the transducer signal is of a magnitude outside a predetermined range. An operational amplifier is connected to the difference amplifier for amplifying the transducer signal. A latch is connected to the operational amplifier for receiving the amplified signal. A signal alarm and a power source are connected in series with the latch. The latch is changeable from an open condition to a closed condition in response to the amplified signal being greater than a predetermined magnitude. When the latch moves to the closed condition, it connects the power source to the alarm signal and causes actuation of the alarm signal.
REFERENCES:
patent: 86114 (1914-02-01), Yaggy
patent: 2976522 (1961-03-01), Dowling
patent: 3029422 (1962-04-01), Wilson
patent: 3266315 (1966-08-01), Shively
patent: 3315462 (1967-04-01), Bosquet
patent: 3336798 (1967-08-01), Twohey
patent: 3623051 (1971-11-01), Juno
patent: 3631435 (1971-12-01), Elenbaas
patent: 3646540 (1972-02-01), Cooper
patent: 3748656 (1973-07-01), Gray et al.
patent: 3810137 (1974-05-01), Bacon, Jr. et al.
patent: 3914755 (1975-10-01), Hook
patent: 4279028 (1981-07-01), Lowdenslager et al.
Foster Harold L.
Foster Michael L.
Powers Michael A.
Myer Daniel
Rowland James L.
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