Air check valve assembly for powdered bulk product transport

Details Air check valve assembly for powdered bulk product transport Air check valve assembly for powdered bulk product transport

1981-08-13

1984-05-01

Cohan, Alan

Fluid handling

Line condition change responsive valves

Direct response valves

1375157, 285112, F16K 1500

Patent

active

044455330

ABSTRACT:
An air fluid check valve for assembly into the interior of a pair of generally axially aligned conduit sections at a separable joint thereof, for use for instance on a bulk hauling transport trailer adapted for handling powdered solids, such as for instance flour, or cement, or like product. The air valve comprises a valve body which is adapted to be readily inserted into and removed from the separable conduit joint, and in one embodiment has a radially extending rim at one end thereof for locating the valve in the interior of the conduit sections at the joint thereof. In another embodiment, bolts connecting flanged portions of the conduit joint, coact in juxtaposed condition with the valve body to locate the valve in proper position at the conduit joint. The valve has at least one opening therethrough which is adapted to be closed by means of a pivotal spring loaded valve plate, which is pivoted to an open position upon application of predetermined fluid pressure in the conduit sections, applied to the valve plate, for passage of fluid through the conduit sections via said opening in the valve body. Sealing means coacts in sealing relation with the adjacent conduit sections and with the valve body, for sealing the separable joint of the conduit, and for preventing leakage of fluid in the conduit sections externally of the valve body.

REFERENCES:
patent: 3134612 (1964-05-01), Glasgow
patent: 3208472 (1965-09-01), Scaramucci
patent: 3351352 (1967-11-01), Blakeley et al.
patent: 3538946 (1970-11-01), Hilsheimer
patent: 3831628 (1974-08-01), Kintner et al.
patent: 3866734 (1975-02-01), Elkins et al.
patent: 4230148 (1980-10-01), Ogle, Jr.

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