Rail vehicle and bogie therefor
CA 1329054 C · Owner: Keizer, Cornelis Pieter · Inventors: Keizer, Cornelis Pieter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a rail vehicle with a coach body which is supported by at least two bogies, each bogie has a frame having at least two longitudinal girders and two transverse girders. A bolster beam extends transversely to the direction of travel of the bogie and is connected to the coach body by swivelling arms located substantially in the travel direction. These swivel on shafts such that the coach body is supported on the bolster beam by springs. The bolster beam is spring mounted in the travel direction of the bogie relative to the frame by two spring assemblies which are made of semi-rigid material such as rubber plates. These have a high rigidity in the travel direction but a low rigidity in the …
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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
- Granted May 3, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 3, 2011.
- 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.