Thermoplastic polymer shaft having an integrally formed reinforcing member for use in golf clubs and the like
CA 2231908 A1 · Owner: Campbell, Scott S. · Inventors: Campbell, Scott S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A shaft of the present invention is formed as an axially elongated member for use in sports equipment, such as golf clubs fishing rods or the , like. The, shaft is made from composite polymers such as a graphite composite and , includes an outer sidewall which extends radially about an axis to define a substantially hollow, or resin filled core. At least part of the core is divided into two or more longitudinally extending cavities by a reinforcing web or member which spans radially separate points along the shaft sidewall. The reinforcing member is preferably axially elongated anti extends at least part way along the portion of the, shaft. The position of the reinforcing member 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 March 12, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 12, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 12, 2020.
- 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.