Method of maintaining a liquid storage reservoir
CA 1069270 A · Owner: Gulf Seal Corporation · Inventors: Dial, Howard S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a method of maintaining a liquid storage reservoir having a floating flexible cover. A peripheral envelope formed at least adjacent a portion of the peripheral edges of the floatable cover is adapted to be inflated with a compressible fluid, such as air for, proper tensioning of the cover as the level of the stored liquid varies in the reservoir and for preventing wrinkling of the cover. The peripheral envelope is adapted to be filled with a non-compressible fluid for providing a ballast for the cover while the reservoir is emptied during maintenance operations and the cover is inflatably supported for maintenance of the cover and/or reservoir.
Read the whole patent
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 January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 1997.
- 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.