Footwear having spring assemblies in the soles thereof
CA 2319022 A1 · Owner: Precision Products Group, Inc. · Inventors: Neal, Alton L. Ii; Fletter, G. Paul; Orlowski, Henry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A shoe (20) having a preassembled spring assembly (30) incorporated into the sole thereof is provided. The spring assembly (30) includes a pair of plates (38) having a plurality of apertures (44) formed therein. The pair of plates (38) define an upper plate and a lower plate in which the apertures (44) formed in the upper and lower plates are axially aligned when the upper plate is disposed directly above the lower plate. A plurality of spring members (40) are disposed between the upper and lower plates. The spring members (40) are axially aligned with the plurality of apertures (44). A mechanism (42) for retaining the spring members between the upper and lower plates is also …
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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 January 28, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 28, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 28, 2021.
- 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.