Device for securing in position guide rails
CA 2018318 C · Owner: Ossberger, Heinz · Inventors: Ossberger, Heinz; Fritz, Dieter; Oswald, Johannes Rainer
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a device for securing a guide rail in position adjacent and parallel to a main rail of a railroad track. The device comprises a guide rail which is free from perforations and a mounting part having a mounting plate. The mounting plate has a first side and a second side, with at least one perforation formed therethrough. It is positioned such that it extends in a direction substantially parallel to the longitudinal direction of the rails, and such that the rails are positioned on that first side of the plate. At least one claw secures the guide rail against the first side of the mounting plate and extends, through the perforation to contact the guide rail on that first …
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 June 5, 1990 and granted September 15, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 5, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 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.