A carrier plate assembly for a slackless drawbar assembly
CA 2238367 C · Owner: Westinghouse Air Brake Company · Inventors: Daugherty, David W. Jr.; Natschke, Scott; Ring, Michael E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A carrier plate assembly for use in a slackless drawbar assembly to connect together, in a substantially semi-permanent fashion, adjacently disposed ends of a pair of railway freight cars. The carrier plate assembly includes a carrier plate member having a top surface and a bottom surface. A crushable support member has a bottom surface thereof engageable with at least a portion of the top surface of such carrier plate member. There is an aperture formed through the crushable support member and an anchoring mechanism is engageable with the carrier plate member and extends through such aperture formed in the crushable support member for securing a locking wedge member to the carrier plate in …
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 May 22, 1998 and granted November 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 22, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 22, 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.