Non-return valves

Details Non-return valves Non-return valves

1984-09-12

1986-12-30

Schwadron, Martin P.

Fluid handling

Line condition change responsive valves

Direct response valves

137843, F16K 1514

Patent

active

046321519

ABSTRACT:
A non-return valve element comprises a one piece moulding of resilient rubber material, for example a synthetic rubber, which is shaped to include a relatively thick and hence rigid planar rib 1 of which the upper edge 1a includes a cylindrical protuberance 2 forming a reinforcement against longitudinal and transverse deflections. The lower edge 1b of the rib has two integral laterally extending wings 3 and 4, each of which is semi-circular in plan. The wings together in planform are circular and are designed to fit a cylindrical bore 5 provided in a fluid flow channel. The bore 5 is delimited from a narrower cross-section bore 6 by means of a shoulder 7 forming a seating for the wings 3 and 4, and an abutment for the ends 8 and 9 of the edge 1b of the rib 1. Fluid flow from channel 6 to 5 causes the wings to flex about the juncture lines 3a, 4 a, with the rib and to facilitate this hinging action the line of the juncture is of reduced thickness, conveniently achieved by providing for the planar uppermost surface of the wing to taper relatively to the planar lower surface.

REFERENCES:
patent: 3403696 (1968-10-01), Pynchen
patent: 3456683 (1969-07-01), Roulet et al.
patent: 3648728 (1972-03-01), Perry et al.
patent: 4222407 (1980-09-01), Ruschke et al.
patent: 4428392 (1984-01-01), Jones et al.
patent: 4550749 (1985-11-01), Krikorian

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