Seal for storage tank floating roofs
CA 1289329 C · Owner: Matrix Service Inc. · Inventors: West, Doyl
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Vapour and weather barrier means are provided for the floating roof of a storage tank. A sloping barrier between roof and tank has resilient metal plates with a wiper on the outer edge and a flexible sheet covers the outer side of the plate. The angle of the plates, when resting on said wall is greater than 45°. Upward and downward sloping barriers may be provided with the sheet covering the outside of the plates. Clips may be provided to ease sliding of the barrier over the tank wall. downwardly sloping barrier may be provided by constructing the barrier sloping upwardly on temporary clips which are removed to convert the barrier to a downward slope.
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 September 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 24, 2008.
- 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.