The edge
CA 2310253 A1 · Owner: May, Brian D. · Inventors: May, Brian D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The "EDGE" is a tool constructed of wood or man made material for use by the paticipants in the, sport of Curling. It has the properties for economy of size and transport, of being easily separated into three parts, main body, rear web and brush and is used when assembled to relieve the stresses on the developing, body in the younger players when "throwing" the "rocks". It will assist Adult players in maintaining a better balance and poise whilst assessing the trajectory, and delivering the rock. The brush can be easily detached to clean the ice at the point of delivery and snapped back on the, main frame before the throw. The assembled tool can be stood upright on the trailing edges …
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 6, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 6, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 6, 2022.
- 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.