Welding of plastic pipe elements
CA 2054680 A1 · Owner: Mkm S.R.L. · Inventors: Meirana, Giovanni
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to an equipment for welding melt-weldable plastic material pipe elements, said equipment comprising a metal plate (1) having plane-parallel walls (1' 1'') and being, endowed with heating means that allow the heating of said plane surfaces to be performed; a first element (2) which is made up of a heat-conducting material, for melting the side surface of a first pipe (9) whose shape is such as to realize a contact surface (2') of almost constant width and maximum melting width at the points corresponding to the maximum stress zones which first element is, also provided with a central member (6) made up of a non-conducting material, which performs the function of a …
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 May 7, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 7, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 7, 2012.
- 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.