Track tamping machine for tamping switches and crossings of a track
CA 2103609 C · Owner: Franz Plasser Bahnbaumaschinen-Industriegesellschaft M.B.H. · Inventors: Theurer, Josef
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
14, A track tamping machine (1) for tamping switches and crossings of a track has a machine frame (3) supported on on-, track undercarriages with a track lifting and lining unit, provided on the said machine frame between the undercarriages and a tamping component (12) with tamping tools (19) which may be squeezed and set vibrating by means of drives (21). The said tamping tools are arranged on a tool carrier (20) which is connected to a tool frame (23) for vertical adjustment by way of vertical guides (22), and the tool frame (23) is designed so as to be adjustable with respect to the machine frame (3) in the transverse direction of the track. An auxiliary lifting device (14), having a …
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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
- Filed August 9, 1993 and granted April 29, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 9, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 9, 2015.
- 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.