Method and apparatus for machining highly concentric parts
CA 2334719 A1 · Owner: Reliance Machine Company · Inventors: Cardemon, Richard A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods and apparatus for machining highly concentric surfaces on a workpiece. In a pre-operation, locating features (54 62, 62', 62") are machined into , either end of a workpiece (11). These locating features are subsequently pulled apart so as to induce tension in the workpiece. In the state of tension the workpiece is rotated and one or more diameters (100 104) are machined , onto the workpiece (11).
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 11, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 11, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 2021.
- 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.