Pipe coupling
CA 1325449 C · Owner: Pittman, James · Inventors: Pittman, James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A coupling element for a pipe is disclosed. The coupling element has a proximal pipe-receiving end and a distal coupling end. The coupling has a sleeve portion the, inner diameter of the sleeve corresponding to the outer diameter of the pipe. A first flange portion projects radially inwardly at the distal end of the sleeve by a dimension corresponding to the thickness of the pipe wall. The inner annular surface of the flange is axial and has a relatively smooth surface. A second flange portion projects radially outwardly from the distal end of the sleeve. The distal ends of the first and second flange portions are integral and constitute a radial abutment surface for, abutting the …
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 December 21, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 21, 2010.
- 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.