Capstan winch
CA 2496944 C · Owner: Kley France · Inventors: Blanc, Remi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a so-called capstan winch (1) comprising drums (2 3) driving a cable (C) and provided with a peripheral wall (22 32) around which are strung independent peripheral rings (40-45 50-55). Said rings are provided with a peripheral groove designed to receive the cable (C) and are made of an elastic material so as to allow both the cable (C) to be driven and a relative sliding movement between the peripheral rings (40-45 50-55) and the peripheral wall (22, 32) the relative sliding movement being of amplitude substantially equal to longitudinal deformations of the cable (C) when it is subjected to tension stresses. The two drums (2 3) can be axially offset relative to each …
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 August 26, 2003 and granted August 14, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 26, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 26, 2025.
- 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.