Method for connection of railway point components consisting of cast hard manganese steel or manganese steel or manganese steel rails to a rail made from carbon steel
CA 2047471 C · Owner: Voest-Alpine Eisenbahnsysteme Gesellschaft M.B.H. · Inventors: Blumauer, Johannes
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a method for connection of railway point components (1) such as for, example, frogs consisting of austenitic cast hard manganese steel or , manganese, steel rails, to rails (2) made from carbon steel with the utilisation of an, intermediate piece (3) made form low-carbon austenitic steel in which method , the, intermediate piece (3) is first-of-all welded to the standard rail or connecting rail, (2), following which, after cutting off the intermediate piece (3) to a length of less, than 25 millimetres, in a second welding operation the intermediate piece (3) , is, welded to the component (1) consisting of cast hard manganese steel or to the manganese steel rail (1), an intermediate …
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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 July 19, 1991 and granted September 14, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 19, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 19, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.