Device to increase performance of a swung sporting implement
CA 2069730 A1 · Owner: Velke, Willi H. · Inventors: Velke, Willi H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
TITLE:, A DEVICE TO INCREASE PERFORMANCE OF A SWUNG SPORTING IMPLEMENT, INVENTOR:, W. H. VELKE ABSTRACT, A device to increase swing speed of a swung sporting implement, such as a baseball bat or a hockey stick by, reducing base drag behind such implement with drag being, reduced by including in the surface of such implement a plurality of surface discontinuities in such a pattern as to change fluid flow behaviour across the surface of such sporting implement to a more favourable flow condition.
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 May 29, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 29, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 29, 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.