Check valve for engine cooling system

Details Check valve for engine cooling system Check valve for engine cooling system

1988-05-24

1989-10-10

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

137519, 137528, F16K 1506

Patent

active

048724769

ABSTRACT:
A check valve for an engine cooling system includes opposite ports and a venting plug press fit in one of the ports. The venting plug defines an opening which allows fluid flow through the valve, and a jiggle pin is positioned in the opening. The jiggle pin has a head on one side of the venting plug for sealing the opening, an anchor on the opposite side for retaining the jiggle pin in the opening and a neck connecting the head with the anchor. A bleed notch is defined in a periphery of the opening to permit restricted fluid flow past the venting plug, even when the head of the jiggle pin is sealed. The ends of the check valve have external threads and different diameters for securing the valve in different size opening, and the venting plug can be press fit into its port in either of two orientations so that either the anchor or the head is positioned between the venting plug and the end of the valve.

REFERENCES:
patent: 145878 (1873-12-01), Kraft
patent: 522253 (1894-07-01), Gold
patent: 1795077 (1931-03-01), Crowley
patent: 2775363 (1956-12-01), Taylor
patent: 2902044 (1959-09-01), Sherer
patent: 3861415 (1975-01-01), Larsen
patent: 4570669 (1986-02-01), Pauliukonis

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