Chain saw attachment
CA 2029176 A1 · Owner: Gross, Donald S. Sr. · Inventors: Gross, Donald S. Sr.; Gross, Donald S. Sr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Applicant: Donald S. Gross, Sr. Invention: Chain Saw Attachment Docket No.: 3027-101, ABSTRACT, A chain saw attachment for driving a circular blade from a chain saw includes a chain mounted on a chain guide and driven by the chain saw motor. A sprocket is mounted at one end of the chain guide and is rotatable with the chain. A spindle is secured to the sprocket and is rotatable therewith. At least one housing member surrounds the sprocket spindle and has a flange section attached to the chain guide. The circular blade is connected to the sprocket spindle for enabling the circular blade to rotate with the spindle.
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 November 1, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 1, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 1, 2012.
- 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.