| 摘要 |
<p>1528833 Respiratory apparatus demand regulator R A CHRISTIANSON 6 Feb 1976 [30 June 1975] 16272/78 Divided out of 1528832 Heading AST The subject matter of this specification is identical to specification 1528832, claim 1 is directed to a demand regulator having a diaphragm attached to a shaft which operates a valve supplying air to a user. The diaphragm floats in a housing separated from the regulator body by a partition having a conical platform, the diaphragm progressively flattening against the platform to reduce its effective area as the pressure in the body is reduced by inhalation. On exhalation the diaphragm edge leaves the surface to provide an exhaust valve through the housing.</p> |
