Winch
CA 2071903 A1 · Owner: Chambers, Christopher Paul · Inventors: Chambers, Christopher Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A winch comprises : a bollard (5) having a fixed end (8) and a distal end (21); a winch drum (2) rotatably mounted on the bollard; journal bearings (6) arranged between the winch drum and the bollard at a load area of the winch drum for transferring cable loads directly from the winch drum to the bollard; a gearbox (10) mounted at the distal end of the bollard and having an input drive member (9) and an output drive member (11) an output drive, connection (13, 14) from the output drive member of the gearbox to the winch drum at the distal end of the bollard; and an input drive connection (50) to the input drive member of the gearbox.
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 October 25, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 25, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 25, 2012.
- 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.