Pipe coupling device
CA 1052414 A · Owner: W.E. Hall Company · Inventors: Hall, Robert E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed herein is a coupler for joining lengths of corrugated pipe including those provided with radial end flanges. The coupler is comprised of two semicircular sections joined at the ends thereof about the juncture of the pipe lengths. Each section has a channeled central portion which is disposed over the ends of the abutting pipe lengths and about the radial end flanges, when provided and corrugated, lateral portions which fit over and mate with the corrugations in the pipe lengths adjacent the ends thereof thereby forming, a strong and durable coupling for the abutting pipe lengths. - 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 April 10, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 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.