Method and apparatus for cleaning tubes in heat exchangers
CA 1113447 A · Owner: Schwinghamer, Rollin A. · Inventors: Schwinghamer, Rollin A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method and apparatus for cleansing the tubes of a heat exchanger using the scouring power of a slurry. In accordance with the invention, valves are provided in conduits throughout the system whereby the slurry can be cut off to permit normal operation. The valves are opened only when it is desired to cleanse the tubes. In accordance with a further embodiment a rotating, element may be disposed at the bottom of the tubes to distribute the slurry to respective ones of the tubes to thereby obtain the benefits of the inventive method and apparatus without requiring full force circulation.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted December 1, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 1, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.