Pipes and tubular conduits – With flow regulators and/or baffles – Restrictors
Patent
1992-01-16
1993-05-11
Bryant, III, James E.
Pipes and tubular conduits
With flow regulators and/or baffles
Restrictors
138 40, 138 42, 138 44, 138 46, F16K 1514
Patent
active
052092658
ABSTRACT:
A flow control device for feeding water flow at a constant flow volume regardless of the pressure. The device comprises a conduit body with a coupling end for coupling with a water supply pipe to receive water therefrom and a discharge end for discharging the water therethrough. The conduit body is formed in the coupling end with a concavity having a bottom wall recessed from the coupling end face and a peripheral inner wall. A passage extends through the conduit body to have its one end opened into the bottom wall and the other end leading to a discharge end. Received within the concavity is an elastic valve having a constricted aperture in fluid communication between the water supply pipe and the passage for feeding the water into the passage through the aperture from the water supply pipe. The elastic valve is capable of elastically deforming to vary a diameter of the aperture in proportion to the pressure of the water applied thereto in order to feed the water through the passage at a constant flow volume regardless of the supplied water pressure. The valve is formed on its outer periphery with three or more projections spaced circumferentially about the aperture to be in pressed contact relation with the peripheral inner wall of the concavity for holding the valve in position within the concavity.
REFERENCES:
patent: 2829674 (1958-04-01), Segelhorst et al.
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patent: 3826463 (1974-07-01), Beauregard
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patent: 4650094 (1987-03-01), Werding
patent: 4867198 (1989-09-01), Faust
patent: 4883093 (1989-11-01), Miles et al.
patent: 5082240 (1992-01-01), Richmond
Maeda Yasuo
Sakurai Yoshihiro
Seto Shinjiro
Taguri Noboru
Bryant III James E.
Matsushita Electric & Works Ltd.
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