Fluid handling – With heating or cooling of the system
Patent
1995-12-26
1996-07-23
Walton, George L.
Fluid handling
With heating or cooling of the system
137565, 137899, 222402, 237 80, E03B 712, F16L 5300
Patent
active
055380310
ABSTRACT:
A recreational vehicle winterizing device adapted for use in association with a recreational vehicle including a water supply system with a plurality of interconnected rigid pipes, the apparatus comprising: a canister formed in a hollow cylindrical configuration with an upper surface including an aperture, a cylindrical neck with screw threads being positioned around the aperture, antifreeze fluid being positioned within the canister, a tube being positioned through the upper surface and extending within the canister, the tube including a valve to enable the user to regulate the flow of antifreeze therethrough; and a pump assembly including a handle, a cylindrical member and a collar with screw threads, the collar threadedly coupling the cylindrical member through the neck of the canister, the handle having an upper extent including a gripping ring and a lower extent including a rod slidably positioned through the cylindrical member, a user gripping the handle and forcing the rod upward and downward thereby causing pressure to build up within the canister.
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patent: 4672990 (1987-06-01), Robillard
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Brence Diana G.
Brence Shelby J.
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