Receiver hitch anti-rattle device
CA 2131472 C · Owner: U-Haul International, Inc. · Inventors: Breslin, Patrick William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for a receiver-type hitch used on vehicles for towing a load, wherein the device acts to prevent movement and resultant rattling between a receiver tube of the hitch and a ball mount shank. In operation the, receiver tube receives the ball mount shank. The device applies a force to the ball mount shank which presses the ball mount shank against the inside of the receiver tube and therein prevents movement.
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 September 6, 1994 and granted February 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 6, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 6, 2016.
- 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.