Hitch coupling aid
CA 2352941 A1 · Owner: Williamson, Terry · Inventors: Ahlquist, Daniel M.; Ahlquist, Donald B.; Williamson, Terry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hitch sling for aiding in coupling a trailer's socket to a ball mounted on a tongue extending from a tow vehicle comprises: a leg secured to the trailer and having a first roller located at lower end of the leg and below the, trailer's socket, a winch, and a flexible line which extends from the winch about, the first roller and to a distal end so that, when the distal end is secured to the, tongue and the line shortened, the leg is lifted upwardly towards the tongue so, as to position the socket substantially above the ball and when the line is, lengthened, the socket is lowered onto the ball for coupling. Preferably a second, roller is positioned between the winch and first roller so …
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 July 12, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 12, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 12, 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.