Electricity: circuit makers and breakers – Fluid pressure – Flow-responsive type
Patent
1995-12-01
1997-08-26
Tolin, Gerald P.
Electricity: circuit makers and breakers
Fluid pressure
Flow-responsive type
137557, 200 6108, 340679, H01H 3534
Patent
active
056612770
ABSTRACT:
A differential pressure flow sensor for use in a flow passageway of very low pressure flow lines and utilizing at least first and second conductive membranes in superimposed relationship having center portions constructed to create a discontinuity to allow a predetermined flow rate therethrough. A conductive strip is in juxtaposed relationship with the superimposed membranes and has a normally closed switch position. When the flow in the flow passageway exceeds the predetermined flow rate, the pressure against the flexible membranes opens the switch of the conductive strip and provides an electrical indication of the open switch.
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Oklahoma Safety Equipment Co.
Tolin Gerald P.
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