Reverse-flow prevention device for fuel tank

Details Reverse-flow prevention device for fuel tank Reverse-flow prevention device for fuel tank

1991-06-25

1993-06-29

Michalsky, Gerald A.

Fluid handling

Line condition change responsive valves

Direct response valves

137515, F16K 1503

Patent

active

052225194

ABSTRACT:
The present invention relates to a reverse-flow prevention device for a fuel tank of an automobile which is provided between a filler port and the fuel tank in the automobile. The reverse-flow prevention device of the invention comprises a valve body of which circular interior space is divided into three to six sector-shaped regions and which includes a support bar provided in alignment with the division lines, and three to six valve discs having configurations to be closely fitted in the sector-shaped regions of the valve body and rotating around the support bar. Bearings of the support bar for rotation of the valve discs are provided with rotation-restriction sections which control the valve discs to rotate within a range of not more than 90.degree. as well as in one direction.

REFERENCES:
patent: 1023885 (1912-04-01), Smyth
patent: 2976882 (1961-03-01), Cowan
patent: 4406022 (1983-09-01), Roy
patent: 4416029 (1983-11-01), Kaster
patent: 4774981 (1988-10-01), Mizusawa

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