Track surfacing machine and method
CA 1106698 A · Owner: Plasser (Franz) Bahnbaumaschinen-Industriegesellschaft M.B.H. · Inventors: Theurer, Josef; Oellerer, Friedrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mobile machine arrangement for surfacing a track comprises a ballast excavating chain, a ballast cleaning screen, and conveying devices arranged rearwardly thereof for returning the cleaned ballast into respective ones of the cribs. Thrust tamping tools immersible in the cribs are arranged rearwardly of the ballast returning devices, and a track correction unit is arranged between the ballast excavating chain and the thrust tamping tools for moving the track into a desired position.
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 August 11, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 11, 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.