Reverse-flow prevention device for fuel tank
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United States of America Patent
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Jun 29, 1993
Grant Date -
N/A
app pub date -
Jun 25, 1991
filing date -
Jun 30, 1990
priority date (Note) -
In Force
status (Latency Note)
Importance
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.
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