Shock absorber component
CA 2113170 C · Owner: Weller, Horst · Inventors: Engst, Wilhelm; Weller, Horst; Repczuk, Alexander
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A shock absorber component is suggested and is in the form of a flatly placeable strip, plate or mat and is especially for supporting the track of railroads. The shock absorber component is placed between the superstructure and the roadbed of the track assembly. The shock absorber component comprises a core layer having bonded rubber particles and a cover layer made of flexible material. The cover layer surrounds this core layer. The rubber particles of the core layer are exclusively porous and the cover layer is made of, a compact rubber material. The cover layer is vulcanized to the core layer. A shock absorber component is produced which achieves a long service life and is simple to …
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 30, 1992 and granted September 9, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 30, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 30, 2014.
- 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.