Method and a device for adjusting the position of elongated elements, especially railway tracks
CA 2113128 A1 · Owner: Ab Bewag · Inventors: Linde, Bertil
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a method for adjusting the position of elongated elements preferably, the rails of a railway track a laser equipment (8) is fixed to the, elongated element (2) and there is from the laser equipment emitted a laser beam against a first reflector (12) which is fixed at at, distance from the laser equipment along the elongated element (2). Thereby there is defined a straight reference plane (16). The section of the elongated element positioned between the laser equipment (8) and the first reflector (12) is then adjusted into correct position by displacing said section in lateral direction to a predetermined distance from the reference plane (16) by means of a second reflector (18). A device …
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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 January 10, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 10, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 10, 2016.
- 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.