Fluid handling – Self-proportioning or correlating systems – Supply and exhaust type
Patent
1975-06-30
1979-04-03
Cline, William R.
Fluid handling
Self-proportioning or correlating systems
Supply and exhaust type
13750546, 137DIG9, 1281422, 128276, 92 6D, A62B 704
Patent
active
041471768
ABSTRACT:
A diaphragm assembly for the demand regulator of a breathing apparatus utilizes a diaphragm that gradually flattens down against a conical platform so as to reduce the effective sensing area. Advantageously the diaphragm is used in conjunction with an aspirator opening adjusted for maximum aspiration effect at low flow rates. At increased flow rates the reduced sensing area compensates for increased aspiration, insuring stable operation. The diaphragm periphery cooperates with the conical platform outer edge to serve as the regulator exhaust valve.
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Cline William R.
Spiegel H. Jay
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