Front draft stop for use in a drawbar assembly
CA 2111259 C · Owner: Hanes, Douglas M. · Inventors: Mautino, Peter Scott; Wurzer, Jeffrey D.; Hanes, Douglas M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A draft stop member in a car coupling arrangement includes a rectangular block-like member. An arcuate portion extends forward from the rear face and inward from the stop upper surface and terminates before a longitudinal centerline thereof. Another arcuate portion extends forward from the rear face and inward from the stop bottom surface and terminates before such centerline. A triangular block-like member formed integral with an inner portion of the rectangular member includes another arcuate portion beginning inward from the stop upper surface and terminating before the centerline. Another arcuate portion begins inward from the stop bottom surface and terminates before the centerline. A …
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 13, 1993 and granted May 4, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 13, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 13, 2015.
- 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.