Railroad car energy absorption apparatus
CA 2752547 C · Owner: Miner Enterprises, Inc. · Inventors: Dillon, Michael S.; Wilt, Donald E.; Vanmaldegiam, Michael D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A side bearing assembly adapted to be disposed intermediate a bolster and a car body of a railway vehicle comprises a housing having sidewall structure extending upward from a base of the housing and defining a first axis the housing being configured with apertured mounting portions for permitting the housing to be secured to the bolster the apertures on the mounting portions being aligned along a second axis extending generally normal to the first axis and with the housing defining an open-top cavity and a plurality of openings arranged in the vicinity of an intersection between the sidewall structure and the base of the housing and opening to the cavity a cap adapted to telescopically …
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 October 8, 2003 and granted January 14, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 8, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 8, 2025.
- 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.