Belt construction, the combination of the belt construction and a pulley, and methods of making the same
CA 2103444 C · Owner: Dayco Products, Inc. · Inventors: White, Jack D. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The combination of an endless power transmission belt construction and a pulley therefor, the belt construction and methods of making the same are provided, the belt construction (41-41B) having opposed inner and outer surfaces (48-48B 49-49B), with each surface defining a plurality of longitudinally disposed and alternately spaced apart like projections (60-60B) and grooves (61-61B) that are adapted to mesh with a ribbed surface (71) of a pulley (70), the depth (D) of the grooves of each of the surfaces of the belt construction (41-41B) being substantially less than the approximately 2.4 mm depth of the grooves of the known belt construction that is adapted to have one of the opposed …
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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 June 17, 1992 and granted November 11, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 17, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 17, 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.