Suck back valve

Details Suck back valve Suck back valve

1998-06-29

1999-09-14

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

With cleaning means, drip collecting, waste disposal or soil...

Nozzle cleaner, flusher or drainer

239 75, 239106, 222571, 251 635, 251331, 60326, B05B 1500

Patent

active

059509244

ABSTRACT:
A suck back valve is equipped with a displacement speed regulating device made up of an ER (Electro-rheological) fluid filled in a chamber and whose viscosity changes in correspondence with the size of an external electric field, a coil member which generates the external electric field in response to an applied voltage, and a constriction which regulates a flow amount of the ER fluid between an upper-side chamber and a lower-side chamber of the chamber.

REFERENCES:
patent: 2948118 (1960-08-01), Carlson, Jr. et al.
patent: 3895748 (1975-07-01), Klingenberg
patent: 4394945 (1983-07-01), Taylor, Jr.
patent: 4597719 (1986-07-01), Tano
patent: 4840112 (1989-06-01), Bhadra et al.
patent: 5134962 (1992-08-01), Amada et al.
patent: 5316112 (1994-05-01), Kimura et al.
patent: 5386849 (1995-02-01), Gilchrist et al.
patent: 5423482 (1995-06-01), Mueller et al.

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