In-line check valve

Details In-line check valve In-line check valve

1995-04-12

1997-06-10

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Liquid sprayer for transparent panel

239571, 137539, 137540, B05B 110

Patent

active

056367945

ABSTRACT:
A windshield washer system has a nozzle mounted on a vehicle for issuing wash fluid to a windshield and a check valve for a fluid circuit from a supply of wash fluid to the nozzle. The nozzle has a fluid feed tube integrally formed therewith with annular walls defining a washer fluid flow path and a diameter of at least D. The feed tube has an external surface adapted to receive and retain a flexible hose from a supply of wash fluid. A spring shoulder receives a coil compression spring having upstream and downstream ends with the downstream end bearing on the spring shoulder. A valve element bears on the upstream end of the spring element, and a tubular insert having an inner end and an external diameter at least D and sufficient to form an elongated wash fluid seal with the annular walls defining a washer fluid flow path, and complementary-shaped valve seat formed on the inner end.

REFERENCES:
patent: 4590962 (1986-05-01), Tespa
patent: 5183075 (1993-02-01), Stein

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