Fuel feed pump

Details Fuel feed pump Fuel feed pump

1992-06-03

1993-03-09

Kwon, John T.

Rotary kinetic fluid motors or pumps

Including means for handling portion separated from working...

415 551, F04D 500

Patent

active

051921847

ABSTRACT:
A fuel feed pump for a motor vehicle, wherein a liquid sealing portion is formed in a position close to an impeller in a casing, an exhaust port is opened in the intermediate portion of the liquid sealing portion in a manner to communicate the inner space of the liquid sealing portion with the outside of the casing. The casing is opened therein with a deairing hole for communicating the liquid sealing portion with the outside of the casing. A deairing groove is formed at least on the upper end surface of the casing. One end of the deairing groove is communicated with the upper space of a generally annular groove path and the other end is communicated with the deairing hole, traversing the liquid seal portion.

REFERENCES:
patent: 4538958 (1985-09-01), Takei et al.
patent: 4793766 (1988-12-01), Kumata
patent: 5009575 (1991-04-01), Hanai et al.

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