Liquid feed pump system

Details Liquid feed pump system Liquid feed pump system

1988-01-21

1989-07-11

Freeh, William L.

Lubrication

Systems

With lubricant treatment means

417435, F01M 1100, F04B 3900

Patent

active

048463086

ABSTRACT:
A liquid feed pump system having a pump for feeding a liquid stored on the suction side thereof to the discharge side, resisting a flow resistance from a discharge-side flow resistance element. A first passage connects the flow resistance element and the pump, and a second passage is formed in the first passage. The second passage has a gas-flow resistance smaller than that of the flow resistance element. At the start of pump operation, gas in the pump is quickly discharged through the second passage, so that the liquid can be fed without a delay. The second passage may be an orifice, which is bored through the wall of the first passage and opens to the atmosphere at all times, or a by-pass, which makes a detour around the discharge-side flow resistance element and continually connects the upper and lower courses of the resistance element.

REFERENCES:
patent: 1650917 (1927-11-01), Ward
patent: 1684910 (1928-09-01), Cooper
patent: 2503016 (1950-04-01), Weeks et al.
patent: 2531319 (1950-11-01), Briggs
patent: 2928499 (1960-03-01), Wallinger
patent: 3816030 (1974-06-01), Straoff
patent: 4204813 (1980-05-01), Tornay
patent: 4557677 (1985-12-01), Hasegawa

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