Equipment for fastening rails
CA 2020687 A1 · Owner: Voest-Alpine Zelftweg Gesellschaft Mbh · Inventors: Orasche, Hermann; Rieger, Johann
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Summary:, Equipment for Fastening Rails In a device for fastening rails and/or switch parts to ties (1) with the use of tie and/or ribbed plates (4) in which the tie, and/or ribbed plates are connected to the ties (1) particularly, steel ties, with intermediate connection of electrical insulation and insulating layers are provided in the area of the fastening of the ribbed and/or tie plates (4), at least two layers (2 3) of, electrically insulating material are mounted between tie (1) and ribbed and/or tie plate, whereby the electrically insulating layers (2, 3) lying on top of each other are formed as plates with surface areas different from each other and the upper insulating plate (3) …
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
- Filed July 9, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 9, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 9, 2012.
- 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.