Clog-proof check valve

Details Clog-proof check valve Clog-proof check valve

1979-11-05

1981-09-15

Cline, William R.

Fluid handling

Line condition change responsive valves

Direct response valves

F16K 1514

Patent

active

042891663

ABSTRACT:
Drain/check valve of soft elastomer for floor of vehicle, resembles a musom. Top surface of mushroom head has radial grooves. Central passage through head terminates in a tapered flat edge of mushroom stem which is normally closed. Head is peripherally grooved in grommet-like fashion to yieldably accept edges of hole-defining floor surface or similar panel. With valve in place, elastomer between radial grooves extends radially inward beyond walls of passage below head, thus forming narrowest part of passageway. Passage diverges downward, when wide open, and passage in its preformed state is progressively larger in overall perimeter and towards the terminal lower end thereof.

REFERENCES:
patent: 3245428 (1966-04-01), Klimak et al.
patent: 3463159 (1969-08-01), Heimlich
patent: 3465595 (1969-09-01), Tansony
patent: 3896849 (1975-07-01), Ervin et al.
patent: 4053084 (1977-10-01), Anderson

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