Socket pipe seal for concrete pipes
CA 1190870 A · Owner: Denso-Chemie Wedekind Kg · Inventors: Faerber, Peter; Weingarten, Hans T.P.; Rosgen, Rudolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A socket seal for a tubular member defining a socket having an open end delimited by a free edge an inner wall, extending from the free edge and a base remote from the open end, and into the open end of which socket a further member is to be inserted to form a sealed connection the seal being, composed of a sealing ring made of an elastomer material and including a holding portion embedded in the tubular member in the region of the outer edge of the socket a band-shaped, fastening portion joined to the holding portion and a, sealing portion joined to the fastening portion and having a configuration such that it has a greater thickness at a point spaced from the fastening portion than at 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 July 23, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 23, 2002.
- 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.