Coupling and method for folding back a pipe end using for it and its apparatus
CA 2103643 A1 · Owner: Taga, Jun · Inventors: Okamoto, Kimio; Taga, Jun
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention related to this application is: a method for folding back an opening end of resin pipe comprising following processes, (a) a process for mounting an annular body to a circumference of a pipe, (b) a process for inserting a conically protruded portion of a guiding portion including said conically protruded portion and a curved surface groove formed around this circumference to an opening end of the pipe and simultaneously advancing with rotating the guiding portion and, (c) a process for continuing the advancement with rotating said guiding portion whereby folding back the opening end of the pipe, and inserting the folded back pipe opening end to the circumference of said …
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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 August 9, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 9, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 9, 2015.
- 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.