Fluid handling – Self-proportioning or correlating systems – Self-controlled branched flow systems
Patent
1979-11-16
1981-08-04
Nilson, Robert G.
Fluid handling
Self-proportioning or correlating systems
Self-controlled branched flow systems
F16K 1102
Patent
active
042816777
ABSTRACT:
A supply valve includes a housing with a bore and an outlet and a pair of inlets communicating with the bore. The valve also includes a shuttle slidable in the bore in response to a pressure differential between the inlets to communicate one of the inlets to the outlet and to close the other inlet when the pressure level at the one inlet is greater than the pressure level at the other inlet. The shuttle slides to close the one inlet and communicate the other inlet to the outlet when the pressure differential between the inlets reaches a predetermined level. The shuttle includes a pair of fluid pressure responsive areas corresponding to each of the inlets. At least one of the areas includes one portion communicated to its corresponding inlet and another portion communicated to the outlet when the corresponding inlet is closed, the other portion being communicated to the corresponding inlet when the corresponding inlet is communicated to the outlet. The improved valve also includes restricted orifices providing uninterrupted communication between the outlet and the other portion of the areas and passages communicating the outlet with each of the inlets when the other inlet is closed.
REFERENCES:
patent: 2358228 (1944-09-01), Hoof
patent: 2360839 (1944-10-01), Barksdale
patent: 2371293 (1945-03-01), Hoof
patent: 2445505 (1948-07-01), Ashton
patent: 3533431 (1970-10-01), Kuenzel
Antonis William N.
Decker Ken C.
Nilson Robert G.
The Bendix Corporation
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