Electrofusion fastening apparatus
CA 2179165 A1 · Owner: Tokushu Kogyo Kabushikigaisha · Inventors: Kumagai, Masaru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Electrofusion fastening apparatus comprises a control box (1) for detecting incorrect assembly of a pipe fitting (16) and pipe (17) and aborts the welding operation without destroying the fitting. Electrofusion fastening apparatus also comprises a control box (1) for measuring the gap between the pipe and fitting and alters the welding parameters to compensate. Electrofusion fastening apparatus warms the pipe and fitting prior to welding to ensure the surfaces are dry. A socket for electrofusion welding has 2 coil (19) buried in the body of its wall. A transition fitting is provided to interface between metal and electrofused components. Electrofusion apparatus includes means (8) for …
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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 December 14, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 14, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 14, 2016.
- 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.