Multi-level access devices
CA 1160102 A · Owner: Westinghouse Brake And Signal Company Limited · Inventors: Tregoning, Geoffrey R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for providing access to a railway passenger car from more than one level is provided which includes having a platform formed of three parts, an edge of a first of said parts being hinged at first hinge means to an edge of a second of said parts, the opposite edge of which is hinged at a second hinge means to an edge of a third of said parts guide means being, provided for guiding the third part between a position in which the three parts form a platform at one level and a position in which the third and second parts form respectively a step and a riser between a lower level and said one level, means for actuating said second and third parts between said levels and for supporting …
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
- Granted January 10, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 10, 2001.
- 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.