Saw arbor and guided circular saw
CA 2353669 C · Owner: Delta Drive Systems Corporation · Inventors: Stroud, Gary Arthur
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An arbor for a guided circular saw has three symmetrical lobes. The lobes have end, regions with profiles which follow an arc centred on an axis of rotation of the arbor. The lobes have driving regions with profiles which follow the arc of a circle centred in, an opposing lobe. A saw for use with the arbor has an eye with a shape which follows, the contour of the arbor. The saw is capable of floating axially along the arbor. The, saw and arbor can be used to advantage in sawing machines such as edgers. The arbor, provides a much larger saw contact area than do prior art arbors. In one embodiment, of the invention the saw is mounted between a pair of spaced apart collars on the, …
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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 July 11, 1997 and granted December 30, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 11, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 11, 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.