Method of evaluating a workpiece for machining
CA 2250033 A1 · Owner: Crandall, Robert S. · Inventors: Crandall, Robert S.; Baldeck, Brian J.; Alford, Scott R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of evaluating a toothed workpiece (20) for machining according to a predetermined machining process comprising mounting the workpiece (20) to a rotatable spindle (22) on a machine tool (10) and providing a probe means (24) positioned whereby a signal is produced when a leading or trailing flank of the workpiece (20) is located in a predetermined position relative to the probe (24). The signal produced by the probe is indicative of the instantaneous rotational position of the spindle (22). The workpiece spindle is rotated to bring selected leading and/or trailing tooth flanks each into the predetermined probing position to generate a signal and the instantaneous rotational …
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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 3, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 3, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 3, 2019.
- 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.