Pipe joint
CA 2527638 C · Owner: Inoue, Hiroshi · Inventors: Inoue, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pipe joint provided with a joint main body having an insertion cylinder portion inserted to an end portion of a pipe to be connected a clamp ring having a slit to fasten the end portion of the pipe inserted to the insertion cylinder portion by elastic fastening force a diameter-expansion piece, releasable as to jump outward held within the slit to expand the clamp ring against elastic force of the clamp ring and a restriction sleeve covering the clamp ring as to restrict the outward jump of the diameter-expansion piece. And a pipe-insertion detector, detecting the insertion of the pipe to a predetermined depth to release the restriction is provided.
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
- Filed November 24, 2005 and granted January 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 24, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.