Engine coolant extractor/injector with double shut-off coupling

Details Engine coolant extractor/injector with double shut-off coupling Engine coolant extractor/injector with double shut-off coupling

1994-03-11

1995-06-27

Flanigan, Allen J.

Pumps

One fluid pumped by contact or entrainment with another

Liquid pumped by supplying or exhausting gaseous motive...

137205, F04F 102

Patent

active

054275059

ABSTRACT:
An apparatus for extracting and injecting liquid coolant from and into a reservoir for an engine cooling system. The apparatus includes a storage tank for the liquid coolant, and an air pressure system for selectively applying fluid pressure to the tank either above or below atmospheric pressure. A hose connects the tank to the engine cooling system reservoir through a double shut-off-type coupling. One part of the coupling is connected to the reservoir, and the other, to the end of the transfer hose each having its own independent shut-off valve. When the coupling is connected, the valves in both components are opened and conversely when the coupling is disconnected, the valves automatically close.

REFERENCES:
patent: 892254 (1908-06-01), Hanson
patent: 2740420 (1956-04-01), Hanks
patent: 4378026 (1983-03-01), Bauer
patent: 4698983 (1987-10-01), Hechavarria
patent: 4807674 (1989-02-01), Sweet

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