Venting device

Details Venting device Venting device

1983-02-25

1985-10-08

Michalsky, Gerald A.

Fluid handling

Back flow prevention by vacuum breaking

Air vent in liquid flow line

137217, 137526, 137859, E03C 1295

Patent

active

045453985

ABSTRACT:
A venting device for sanitary conduits comprising a first edge 12 and a second edge 10 bounding an air passage 7. One side of a valve 8 of flexible material is retained on the upper side of first edge 12, the other side provided with a downwardly extending ledge 13 moveably engages the top 15 of second edge 10. The valve 8 is provided with a thinned portion 9 near the first edge 12.

REFERENCES:
patent: 208379 (1878-09-01), Downey
patent: 2033467 (1936-03-01), Groeniger
patent: 2511435 (1950-06-01), Griswold
patent: 2542254 (1951-02-01), Lamb
patent: 2722943 (1955-11-01), Reinecke
patent: 3207171 (1965-09-01), Kryman
patent: 3923081 (1975-12-01), Persson
patent: 4117856 (1978-10-01), Carlson
patent: 4212314 (1980-07-01), Ericson
patent: 4232706 (1980-11-01), Ericson

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