Apparatus for welding at least four mitre cut profile sections simultaneously
CA 2240809 A1 · Owner: Technoplast Kunststofftechnik Gmbh · Inventors: Schwaiger, Meinhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an apparatus for the simultaneous welding of at least four plastic profile sections cut for mitre joint for window or door leaves or frames with four welding heads which are arranged moveable relative towards one another, with stops being provided in the zone of each welding head in order to outwardly support the ends of the profile sections and with spacer elements being provided which support the surfaces of the profile sections cut for mitre joint. A precise arrangement of the corners is achieved in such a way that the spacer elements are outfitted with springs.
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 June 16, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 16, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 16, 2020.
- 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.