Trailer hitch ball formed onto stud
CA 2240975 C · Owner: Draw-Tite, Inc. · Inventors: Belinky, Jacob S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A trailer hitch ball in which a tubular member is formed into a generally spherical configuration while being permanently attached to a central stud. The hitch ball may be formed by crimping a tubular member onto a central stud integrally formed from a drawbar shank producing a combined ball and shank for detachable connection to the receiver of a trailer hitch.
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 June 18, 1998 and granted January 29, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 18, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 18, 2020.
- 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.