Strap for the quick fastening of a railroad rail
CA 2004173 C · Owner: Etablissements Vape · Inventors: Vanotti, Gerard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a strap for the fastening of railroad rails to ties or stringers. The fastening strap is composed of a rod having a vertical rectilinear part and a curved part which forms a spring. The end grips the flange of the rail to be fastened, after being tensioned as a result of the rotation of the strap above a ramp the, lower end of the rectilinear part being equipped with a heel catching on a retaining surface in the tie. The strap has an intermediate bearing point which during the, rotation of the strap, bears on an abutment or on a bearing surface of a metal sole plate. This intermediate bearing point ensures the stability of the strap during its rotation and in its …
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 November 29, 1989 and granted February 8, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 29, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 29, 2011.
- 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.