Trailer hitch shock absorber
CA 2032451 C · Owner: Edelman, David Gene · Inventors: Edelman, David Gene; Thorne, Rexford Miles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A trailer hitch adapter is provided for connection either to a trailer hitch ball or to a trailer hitch tongue. The adapter includes a tubular member that defines a housing and a connecting member carried within the housing between a pair of resilient elements to absorb axial shocks and rotational loads imparted by one of the towed vehicle or the towing vehicle to the other vehicle. The adapter is removably connected with a portion of the trailer hitch by means of a pair of retaining pins, to permit its removal and transfer from one vehicle to another, and also to prevent an unauthorized connection of a towed vehicle to a trailer.
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 December 17, 1990 and granted June 21, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 17, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 17, 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.