Improved service-life, low-profile, retrofittable, elastomeric mounting for three-piece, railroad-car trucks
CA 2114120 C · Owner: Bucksbee, James H. · Inventors: Bucksbee, James H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved service-life, low-profile, elastomeric mounting (18) for placement between the side-frame-pedestal-jaw roof (22) and the axle-box or axle-bearing adapter crown (20) on a three-piece railroad-car truck. The mounting (18) minimizes the damaging compression induced edge strains resulting from the cocking motions imposed on the elastomeric mounting (18) during railroad car braking and rocking. The addition of shims (28) specialized , elastomer contouring (40) graded thicknesses (t1;t2), of the elastomeric layers (30 31) in combination with high shape factor of the elastomeric layers (30, 31) allows the compression induced edge strains to be significantly reduced and results in …
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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 July 23, 1992 and granted October 31, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 23, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 23, 2014.
- 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.