Pipe coupling
CA 1056874 A · Owner: Straub, Immanuel · Inventors: Straub, Immanuel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pipe coupling comprising a housing which can be clamped about the pipe ends which are to be interconnected there, being enclosed within such housing an inwardly open gasket of substantially C-shaped cross-section having confronting legs constructed as sealing lips and the web of which bears against the inner surface or inside of the housing. The web is supported upon the sealing lips by a respective spiral or helical spring ring. -1-
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 June 19, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 19, 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.