Male connector member for a slackless drawbar assembly using a ball and race assembly
CA 2125437 C · Owner: Westinghouse Air Brake Company · Inventors: Daugherty, David W. Jr.; Hawryszkow, Michael G.; Kanjo, Wajih
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A male connection member capable of carrying a ball and race assembly at a first end thereof for use with a female connection member disposed at least at one end of a slackless drawbar assembly designed to connect together adjacently disposed ends of a pair of railway cars. Such male connection member includes a first end portion having a portion thereof capable of being movably disposed within a cavity formed in such female connection member and defined by inner surfaces of a back wall portion and a pair of side wall portions. An aperture is formed through a portion of such first end portion. Such aperture capable of receiving therein both at least a portion of a spherical shaped member …
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 8, 1994 and granted September 18, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 8, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 8, 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.