Dual-drive winch system adapted for well logging applications
CA 2354592 A1 · Owner: Nold, Raymond V. Iii · Inventors: Nold, Raymond V. Iii
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A winch system is disclosed which includes a first drum rotatably supported in a, cradle, a second drum rotatably supported in the cradle axially alongside the first drum, and rotatable independently of the first drum and a drive system selectively , connectible to the first drum and the second drum. In one embodiment the first drum is , rotatably, supported at one end by a first bearing in one and of the cradle the second , drum is, rotatably supported at one end by a second bearing in another end of the cradle, and the, second drum is rotatably supported at another end by at least one bearing in a support, bore in the first drum.
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 1, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 1, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 1, 2023.
- 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.