Apparatus for cutting and shaping material
CA 2065830 A1 · Owner: Coburn Optical Industries, Inc. · Inventors: Hill, Phillip D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for Cutting and Shaping Material Apparatus for cutting and shaping material which includes at least one bearing arrangement. The bearing arrangement comprising: - a hollow sleeve member;, - a rotatable shaft disposed in the hollow sleeve member; - a bearing race assembly disposed between the hollow sleeve member and the rotatable shaft to facilitate the relative rotation therebetween; and, - an end cap disposed to close off the hollow sleeve member and enclose the bearing arrangement. Fluid is injected into the internal environment of the hollow sleeve member and caused to flow, at least in part between the, components and out of the bearing arrangement so as to prevent the …
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 April 10, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 10, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 10, 2014.
- 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.