Check valve

Details Check valve Check valve

1992-12-28

1994-03-08

Hepperle, Stephen M.

Fluid handling

Self-proportioning or correlating systems

Self-controlled branched flow systems

137895, 137907, 417159, F16K 1110, F16K 1516

Patent

active

052919161

ABSTRACT:
A check valve which is positioned in the vacuum air line of an internal combustion engine. The check valve includes a single-piece valve body having an outlet port and two or more inlet ports, with one outlet port located substantially in line with the inlet port and connected by a venturi tube. The second inlet port is separated from the main air flow line by the valve stem and a diaphragm which allows communication there between and prevents back pressure. The second inlet port communicates with the outlet port through the valve stem and a second venturi tube which provides a vacuum boost to a device, usually vehicle brakes, connected to the inlet.

REFERENCES:
patent: 1845969 (1932-02-01), Hueber
patent: 3042077 (1962-07-01), Waddington et al.
patent: 4211200 (1980-07-01), Rocchio et al.
patent: 4913192 (1990-04-01), Vaura
patent: 5108266 (1992-04-01), Hewitt

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