Tamping head
CA 1056211 A · Owner: Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. · Inventors: Theurer, Josef; Praschi, Wilhelm
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tamping head with a pair of vibratory and reciprocatory tamping tools mounted on a vertically adjustable carrier for immersion in the ballast in the cribs with the, ties positioned between the tools Each tamping tool is, constituted by a lever pivotal in a vertical plane about a transverse pivot, and stops are mounted on the carrier for setting at least three different reciprocating strokes for the tamping tools, with a remote-controlled multi-step drive for setting the stops.
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 June 12, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 12, 1996.
- 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.