Improved grinding machine and method of grinding
CA 2229013 C · Owner: Western Atlas U.K. Limited · Inventors: Laycock, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a method and apparatus for grinding crankpins of a crankshaft. The method is comprised of the steps of mounting the crankshaft between centres; and attaching radially outer regions of the flange to a rotational drive to rotate the crankshaft about its main axis via a, coupling which is torsionally rigid in a plane generally perpendicular to the axis of rotation of the crankshaft but which is readily deformable in other planes to accommodate misalignment. The method further includes advancing the grinding wheel to engage a crankpin region of the crankshaft; and synchronously controlling the position of the grinding wheel whilst the crankshaft is rotated …
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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 April 20, 1995 and granted February 4, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 20, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 20, 2017.
- 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.