Dimple pattern
CA 2013699 C · Owner: The Top-Flite Golf Company · Inventors: Melvin, Terence; Nesbitt, R. Dennis; Stiefel, Joseph F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A golf ball is disclosed which has two poles and an equator and a modified icosahedral lattice wherein the lattice comprises five adjacent triangles on either side of the equator with the, vertices of each of the adjacent triangles being located at each of the poles and the legs of the triangles opposite said vertices being equidistantly spaced from the equator. Each triangle includes four dimples having a diameter D1 and two dimples having a diameter D2 located substantially centrally within the triangles. The remaining surface of the ball including the, remaining area within the triangles contains dimples having a, diameter D3. The diameter relationship is D1>D2>D3.
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 April 3, 1990 and granted May 18, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 3, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 3, 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.