Tread centering method and apparatus
CA 2007182 C · Owner: Cronin, Robert Allan · Inventors: Clayton, Andrew Robert; Cronin, Robert Allan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for centering an annular tread on a pneumatic-tire casing comprises mount ing the casing on a wheel, locating the equatorial plane of the casing or wheel, mounting the annular tread on an axially-moveable supporting device, positioning the tread on the supporting device such that its circumferential centerline is located a specific distance from and parallel to the equatorial plane of the casing or wheel, and decreasing the relative distance between the annular tread and the casing or wheel by an amount equal to the specific distance so that the annular tread encircles the casing and the circumferential centerline of the tread becomes coincident with the equatorial plane of 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 January 4, 1990 and granted March 14, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 4, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 4, 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.