Fluid handling – Line condition change responsive valves – With separate connected fluid reactor surface
Patent
1987-08-18
1989-06-06
Hepperle, Stephen
Fluid handling
Line condition change responsive valves
With separate connected fluid reactor surface
137115, 137907, 242182, 251 634, F16K 31365
Patent
active
048362417
ABSTRACT:
A valve for controlling a pressure differential between a high and low pressure, characterized by a housing being sub-divided by a transfer port into a first and second chamber, each having ports, a valve member movable in the first chamber to close the transfer port, a spring arrangement for urging the valve member to a closing position, a membrane extending across an opening end of the housing, which is in communication with the first chamber and held on by a cap forming a third chamber having a port and means for connecting the valve member to the membrane so that when a pressure differential between the pressure in the first chamber and third chamber exceeds the value of the spring arrangement, the transfer port is open to allow passage of the pressure in the first chamber into the second chamber. The valve can be used in controlling a compressor by allowing the dumping of the output of the compressor when the pressure differential is exceeded and can be used for controlling a vacuum system by dumping ambient air into the vacuum system when the vacuum exceeds a certain amount. In addition, the valve can be utilized for maintaining a pressure differential on a tape loop box of a reel-to-reel magnetic tape recorder.
REFERENCES:
patent: 892788 (1908-07-01), Wilkens
patent: 1217344 (1917-02-01), Powers
patent: 1432111 (1922-10-01), Lewis
patent: 1514667 (1924-11-01), Lawrence
patent: 2524446 (1950-10-01), Johnson
patent: 2599872 (1952-06-01), Slonneger
patent: 2805685 (1957-09-01), Jopson
patent: 2883998 (1959-04-01), Broughton
patent: 3946447 (1976-03-01), Moon
patent: 4158437 (1979-06-01), Nielsen
patent: 4458712 (1984-07-01), Stevenson
patent: 4633845 (1987-01-01), Seleno
Hepperle Stephen
Siemens Aktiengesellschaft
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