Cutting die head
CA 2567904 C · Owner: Blitchington, James M. · Inventors: Grove, Kevin D.; Weathers, David W.; Bryant, Sr. Curtis L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cutting die head (10) that can be set and/or reset without an external mechanism. To this end, the die head (10) includes a die body (12) including a plurality of radially adjustable blocks (46) each block having a cutter (48) , mounted thereon and a radially outwardly facing cam surface (66). A sleeve (20) surrounds the die body (12) and has an inner surface. The inner surface has a plurality of cam surfaces (66) arranged to communicate with the cam surfaces of the blocks (46) such that axial movement of the sleeve results in radial movement of the blocks. In one embodiment the sleeve is caused to move axially by fluid pressure.
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 6, 2005 and granted February 5, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 6, 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.