Rail grinding apparatus
CA 1112049 A · Owner: Speno Rail Services, Inc. · Inventors: Rivoire, Albert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Vehicle-mounted rail grinding apparatus has circular rail grinding discs mounted on a massive platform that is supported by hydraulic pistons and cylinders located at or adjacent the centers of gravity of the platform and vehicle carriage. This permits universal relative movement of the vehicle carriage and platform so that the vertical position of the discs is independent of the movement of the vehicle carriage caused by undulations and other imperfections in the rails.
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 November 10, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 10, 1998.
- 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.