Side wall for railway car and corresponding railway car body
CA 2296755 A1 · Owner: Alstom Holdings · Inventors: Delroise, Pascal; Dabezies, Bernard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a side wall (4) for a railway car body (1) comprising a metal support frame (8) and a metal external covering (12) welded on the frame. Said side wall comprises a roof leaf (10) designed to be coupled to a railway car body roof (1). Elements (14) of the support frame (8) are linked to the roof leaf by laser welds (20). The metal support frame (8) extends from a lower longitudinal spar (6) to support said external covering (12) and said roof leaf. The invention is applicable to railway car bodies made of steel.
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 17, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 17, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 17, 2021.
- 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.