Pipe connection
CA 1054646 A · Owner: Centaurus Ag · Inventors: Hartmann, Werner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a pipe connection for unprepared pipe ends with a sealing sleeve made of a plastics material which is pushed on to the pipe ends in line with one another and abutting one another the outer surfaces of which widens conically both ends to an axially central periphery onto which outer surfaces are pushed from both ends flange rings which are clampable to one another.
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 May 15, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 15, 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.