Hoses or flexible pipes
CA 2313539 C · Owner: Dixon-Roche, Keith · Inventors: Dixon-Roche, Keith
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hose or flexible pipe (100; 200) which has an inner lining (116; 216) composed of fluoropolymer. This gives the hose an improved capacity to withstand high temperatures, chemical degradation and embrittlement along , with flexibility and light weight. The hose wall structure (102) is preferably fully bonded to improve support for the fluoropolymer lining (116; 216). The fluoropolymer lining (116; 216) also makes practicable the use of rubbers having the ability to withstand high temperatures. There is also described an assembly of such a hose or flexible pipe (100; 200) with an end fitting (300 + 400; 310 + 410) incorporating a novel pressure-actuated seal (500 502; 600; , 800)
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
- Filed December 7, 1998 and granted May 31, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 7, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 7, 2020.
- 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.