Safety check valve for fuel delivery system

Details Safety check valve for fuel delivery system Safety check valve for fuel delivery system

1997-02-07

1998-08-18

Ferensic, Denise L.

Fluid handling

Line condition change responsive valves

Direct response valves

13754321, 137538, F16K 1500

Patent

active

057946574

ABSTRACT:
The invention concerns a fuel check valve to prevent unintentional siphoning of fuel from a cell should a fuel delivery line by severed. The check valve includes a valve housing having a fluid conduit coupling a first and second orifice. An internal seat is formed in the fluid conduit to receive a needle body having a seat mating portion that is complementary to the internal seat, thereby creating a fluid barrier when brought into compressive contact therewith. Compressive contact is created by a compression spring located intermediate between the valve housing and the needle body. When the check valve is included in a fuel delivery system, a partial vacuum created by a fuel pump downstream from the valve overcomes the spring bias to cause the needle body to unseat, thereby permitting fuel flow.

REFERENCES:
patent: 2934085 (1960-04-01), Mylander
patent: 3457949 (1969-07-01), Coulter
patent: 3463185 (1969-08-01), Oliver et al.
patent: 4194589 (1980-03-01), Parr
patent: 4214721 (1980-07-01), Burhans, Jr. et al.
patent: 4265271 (1981-05-01), Rosaen et al.
patent: 5092361 (1992-03-01), Masuyama et al.
patent: 5590675 (1997-01-01), Babb

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