Steel crosspiece
CA 2064885 C · Owner: Evobus Gmbh · Inventors: Haug, Walter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a track with several bands (3) running parallel to the direction of travel and connected to each other in the transverse direction by a , multiplicity of steel strips (1). The steels strips (1) are U-shaped in crosssection and have, a U-piece (4) consisting of two sides (5,6) joined by a connecting piece (7) between, them. The first side (5) extends round a bend (9) into a connecting arm (10) leading, inwards and then round second bend (11) to a track blade (12) which is approximately , parallel to the sides (5 6) of the U-piece (4). The steel strip is designed to be, both stronger and cheaper to manufacture. This is achieved by virtue of the fact that, the …
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 August 21, 1990 and granted August 24, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 21, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 21, 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.