Railway track tamping machine
CA 1203434 A · Owner: Sig Societe Industrielle Suisse · Inventors: Ganz, Jorg
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Each tamping unit of the tamping machine has a gantry which is inclinable transversely to the track and in which the tool holder is mounted for vertical movement. The amplitude of the downward movement of the tool holder is regulated by a device controlled by a command level corresponding to the depth of tamping desired. In order to correct the differences between the depth of tamping reached and that desired which are caused by the inclination of the gantry the said command level is lowered by a distance substantially equal to the said differences by a correction device comprising a mechanical feeler for detecting the inclination of the gantry and a mechanical connection connecting the …
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 April 22, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 22, 2003.
- 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.