Cylindrical cutter with helical cutting line
CA 2646534 C · Owner: Technische Universitaet Dresden · Inventors: Butter, Wolfgang; Fischer, Roland; Gottlober, Christian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a cylindrical cutter having one or more helically running cutting , edges for machining wood wooden materials and plastic and to a method of producing it. , The tool according to the invention has a tool inclination angle .lambda.s of the cutting edges , within the range of 70° up to nearly 90° in particular around , 80° to 88°, and a rake angle &ggr;r between the tool orthogonal plane P o and the rake face A y measured , in the tool , reference plane P r of at least 5°. In the case of the tool there is , a substantial difference , between the effective angles and the ground orthogonal angles. The chips are mainly , peeled off and discharged axially. The chips …
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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 March 23, 2006 and granted January 15, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 23, 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.