Rail tensioning apparatus
CA 1315355 C · Owner: Gruber, Leopold R. · Inventors: Oellerer, Friedrich; Theurer, Josef; Hansmann, Johann
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure An apparatus for tensioning or longitudinally sliding a rail of a laid track to reduce a gap between adjacent ends of longitudinally successive rail sections to be welded together to form the rail, the fastening elements of the longitudinally sucessive rail sections having been loosened which comprises a closed, ring-shaped mechanical structural unit including two longitudinally spaced pairs of rail clamping jaws and two transversely spaced hydraulic cylinder-piston devices connecting the pairs of rail clamping jaws and operating the same. These pairs of rail clamping jaws are spaced longitudinally and the cylinder-piston devices are spaced transversely to define …
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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
- Granted March 30, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 30, 2010.
- 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.