Expandable and contractible coiler mandrel
CA 2586723 C · Owner: Sms Demag Ag · Inventors: Patzelt, Ulrich; Nosolik, Franz
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 expandable and contractible winder (1) in , particular for winding a metal strip. Said pin comprises: a rotatably mounted winder shaft (2), whose outer periphery comprises at least one wedge surface (3); a number of co-operating segments (4) whose outer periphery comprises a , winding surface (5) in particular for the metal strip and whose end region (6) that faces away from the winding surface (5) has at least one counter wedge surface (7) that co-operates with the wedge surface (3) of the winder shaft (2); elements (8) for displacing the segments (4) in relation to the winder shaft (2) in the axial direction (A) of the latter; and a conduit system (9), …
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 March 29, 2006 and granted May 22, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 29, 2026.
- 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.