Skate with shoe feature
CA 2295426 A1 · Owner: Chen, Tzu-Nan · Inventors: Chen, Tzu-Nan; Chen, Wen-Suei
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A skate with shoe feature comprises two springs two pairs of, wheels each having a bore two axles each having a length conformed to the distance between the pair of wheels an axially groove, and an, elongate pivot member hinged to the axially groove at one end and a, shoe body having two transverse tubes in the front and rear of the sole and at least two curved fastening members on two sides in the axial direction of the pair of wheels. Whereby the compressed spring sleeved on the axle, one wheel sleeved on the axle the axle through the bore, and the other wheel sleeved on the axle are secured together by pulling pivot member upwardly to make it perpendicular to axle.
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 January 6, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 6, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 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.