Process and apparatus for subjecting workpieces having annular shape to machining of their inner and outer surfaces
CA 2445803 A1 · Owner: Caldana, Marcus · Inventors: Caldana, Marcus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The annular workpiece (P) to be machined is positioned by one of its bases and with axial alignment onto a cylindrical base structure (1) onto which the workpiece remains secured due to the presence of a suitable adhesive (2) which for example has been previously distributed onto the said base structure. After the setting of the adhesive, the workpiece to be machined is loaded onto the machine tool, so as to be clamped by the chuck of this latter through the base structure (1) which carries it, and no more directly as in the known art. The clamping forces of the chuck are thus discharged onto the base structure (1) and they do not deform at all the workpiece (P) which can be …
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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 January 3, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 3, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 3, 2025.
- 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.