Floating cover assembly
CA 1058822 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
Abstract of the Disclosure A floating cover assembly encompassing in a first condition a method and apparatus for tensioning a floating cover for a liquid storage reservoir wherein the surface level of the stored liquid varies and in a second condition a method and apparatus for maintaining a liquid storage reservoir. In the apparatus of the above inventions a, peripheral envelop formed at least adjacent a portion of the peripheral edges of the floatable sheet is adapted to be inflated with a compressible fluid, such as air for proper, tensioning of the sheet as the level of the stored liquid varies in the reservoir and for preventing wrinkling of the sheet while, in the second condition, …
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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 July 24, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 24, 1996.
- 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.