Pumps – One fluid pumped by contact or entrainment with another – Liquid pumped by supplying or exhausting gaseous motive...
Patent
1991-09-16
1993-09-07
Flanigan, Allen J.
Pumps
One fluid pumped by contact or entrainment with another
Liquid pumped by supplying or exhausting gaseous motive...
417118, 417148, 165 95, F04F 106
Patent
active
052422739
ABSTRACT:
An automobile coolant extractor/injector comprises a tank assembly, an air pressure control assembly and a hose assembly. The air pressure control assembly creates a vacuum in the tank assembly by using the venturi effect. The air pressure control assembly does this by connecting to a compressed air hose. The air from the air hose flows through a venturi chamber creating a vacuum. The vacuum forces air out of the tank, creating a vacuum in the tank. A transfer hose is also connected to the tank. The transfer hose is inserted into an automobile radiator, and opened. The vacuum in the tank pulls coolant out of the radiator through the transfer hose and into the tank. Coolant is injected or reinjected into the radiator by increasing the air pressure inside of the tank. A Schraeder valve on the tank connects to a compressed air hose. Air flows into the tank through the Schraeder valve until the inside of the tank reaches the necessary air pressure. When the desired air pressure level is reached, as determined by an air pressure gauge connected to the tank, the compressed air hose is removed from the Schraeder valve. The open end of the transfer hose is then inserted into an automobile radiator, and the main rotary valve is opened. The increased pressure inside of the tank forces coolant out of the tank, through the transfer hose, and into the automobile radiator.
REFERENCES:
patent: 3310002 (1967-03-01), Wilburn
patent: 3730647 (1973-05-01), Lonardo
patent: 3780757 (1973-12-01), Jordan
patent: 4770611 (1988-09-01), Heyl
patent: 4901786 (1990-02-01), Vataru et al.
patent: 4911211 (1990-03-01), Andersen
Flanigan Allen J.
Hilbers L. F.
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