Flexible skate frame
CA 2286983 A1 · Owner: Stoughton, Robert S. · Inventors: Stoughton, Robert S.; Oliemans, Eduard W. H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Several embodiments of open and closed loop frames substantially elliptical in shape are disclosed for in-line skates. Some embodiments include independent suspension for each wheel. The frame (3) is flexible to provide shock absorption and rebound. The frame stiffness increases with the applied load. The frame stiffness and flexibility may be adjustable. The rocker of the skate is made to vary with the applied load, so that the skate has high maneuverability yet is very stable when gliding. The frame (3) includes a boot mounting system (4, 5) which adds no stress concentrations thus assuring even flex , properties over the entire frame and high durability. Overload, protection is …
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 November 25, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 25, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 25, 2019.
- 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.