Storage tank
CA 1086019 A · Owner: British Petroleum Company Limited (The) · Inventors: Bold, Stephen E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Liquid storage tank containing a collapsible bag of flexible impervious sheet material supported by a collar within the tank. The bag floats on the stored liquid and moves with the liquid thereby dividing the interior of the shell into an air and a liquid space. The bag has an external skirt of a similar flexible sheet material attached to the supporting collar. The skirt lies between the bag and adjacent tank side walls to reduce abrasion and catching of the bag and tank walls particularly during tank emptying and filling procedures.
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 23, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 23, 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.