Fluid handling – Processes – With control of flow by a condition or characteristic of a...
Patent
1984-08-03
1987-02-17
Schwadron, Martin P.
Fluid handling
Processes
With control of flow by a condition or characteristic of a...
7386158, 137110, 13735518, 137486, 1374875, 137491, 137613, 13761419, F16K 3140, G01M 326, G01F 124
Patent
active
046432132
ABSTRACT:
Method and apparatus for controlling fluid leakage from sections of a pressurized fluid system adapted to provide fluid at line pressure to equipment associated therewith includes means for sensing first and second conditions indicative of non-use and of a usage demand respectively of the equipment and for generating a signal indicative of one of the conditions and control unit means for selectively isolating and effecting communication between line pressure of the fluid system and the system section in response to the condition-indicating signal. According to a first embodiment, the first non-use and second usage demand conditions are constituted by respective lower and higher rates of fluid flow through the section of the fluid system in which leakage is to be controlled. According to a second embodiment of the invention, the first non-use and second usage demand conditions are constituted by support and non-support of the equipment respectively or non-movement and movement of the equipment respectively.
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Hepperle Stephen M.
Schwadron Martin P.
Techrad Corporation
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