Device for tamping railroad track adjacent the tie ends thereof
CA 1209406 A · Owner: Canron Inc. · Inventors: Von Beckmann, Helmuth
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed a tamping device for tamping railway track ballast adjacent and beneath the track tie ends. The device includes a track working machine, a retractable tamper frame mounted on the machine; the frame in operative position, extending at least partially in the, ballast, parallel to the center line of the track adjacent and outside the tie ends; a plurality of tamping plates mounted one behind the other longitudinally of the frame and extending inwardly thereof in the, direction of the track center, in stepped formation with a leading tamping plate extending farther from the frame inwardly towards the track center than a next adjacent trailing tamping plate. Each tamping plate …
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 12, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 12, 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.