Tennis ball without seam adhesive
CA 2098558 A1 · Owner: Gencorp Inc. · Inventors: Janes, Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A stitchless fabric covered ball having a uniform surface free of adhesive seams or other irregularities is disclosed. The ball has a hollow spherical core made from an elastomeric material and a plurality, of fabric panels secured to the core by means of an adhesive. The panels secured to the core substantially cover the entire core so that the edges of the panels are substantially in continuous abutment to form a substantially continuous fabric covering uninterrupted by adhesive seams. The ball has uniform radial symmetry which provides for more predictable and uniform aerodynamic and bounce characteristics. The fabric covering preferably consists of a pair of felt fabric panels having a …
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 June 16, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 16, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 16, 2015.
- 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.