Restored winding cores, method and apparatus for manufacturing the same
CA 2590744 C · Owner: D'Anglade, Pierre-Michel · Inventors: D'Anglade, Pierre-Michel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a restored winding core and a method for manufacturing the same, wherein a plurality of discarded winding cores is first , collected. Each extremity of each core is internally ground on a predetermined grinding distance to remove the crimping portion and provide a ground portion thereon defining a female joint socket. The method also comprises the step of providing a plurality of hollow insert tubes diametrically snugly fitting into the female , joint sockets. Each insert tube is inserted inside the corresponding female joint , sockets of two respective cores for joining the two cores end to end to provide an , endless recycled master core having an …
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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 8, 2005 and granted October 29, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 8, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.