Coil-forming head
CA 2361231 A1 · Owner: Poloni, Alfredo · Inventors: Poloni, Alfredo; De Marco, Fausto; De Luca, Andrea
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Coil-forming head to form coils (15) starting from continuous and substantially rectilinear rolled stock (11) of the type comprising a mandrel , (18) rotating around a substantially horizontal axis containing inside itself , a shaped tube (24) conformed as a spiral inside which the rolled stock (11) is introduced, there being included, in cooperation with the outlet end section of said shaped tube (24), a ring-shaped containing element (29) arranged outside said shaped tube (24), and including at least a segment (29b) of inner wall which tapers and diverges towards the outside suitable to allow a controlled expansion of the trailing-end segment (11a) of the rolled stock (11).
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 January 14, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 14, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 14, 2022.
- 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.