Coil forming apparatus and method
CA 2252486 C · Owner: Starvaski, Raymond R. · Inventors: Shore, T. Michael; Puchovsky, Melicher; Starvaski, Raymond R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus is disclosed for receiving a helical formation of rings free falling from the delivery end of a conveyor and for gathering the rings into an upstanding cylindrical coil. The free falling rings encircle a vertically disposed guide and are supported initially on elevated intercepting elements. The interceptor elements are gradually lowered past a coil plate onto which the accumulated rings are transferred. The coil plate is then covered to accommodate continued formation of the coil and the, intercepting elements are returned to their elevated position.
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 November 2, 1998 and granted January 1, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 2, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 2, 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.