Belt construction, rotatable pulley and combination thereof and methods of making the same
CA 2045545 A1 · Owner: White, Jack D. Jr. · Inventors: Bishop, Clinton L.; White, Jack D. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An endless power transmission belt construction a rotatable pulley therefor, a combination of the belt construction and pulley and methods of making the same are provided. The belt construction (20) comprises a plurality of longitudinally disposed and alternately spaced apart like V-shaped projections (38) and grooves (39) for meshing with an outer peripheral ribbed surface (40) of a rotatable pulley (41). The projections (38) are defined by two substantially straight side edges (44) which form an angle (A) of approximately 60° therebetween with the thickness (T) of the belt construction (20) being substantially the same as the thickness of a similar belt construction wherein the angle is …
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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 January 17, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 17, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 17, 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.