Tie for a ballasted track
CA 2593426 C · Owner: Ssl Stahlbetonschwellenwerk Linz Hollitzer Baustoffwerke Graz Gesellschaft M.B.H. · Inventors: Gruber, Hermann
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a sleeper (1) for a gravel-mounted structure in railways, which has a , cross member (4) extending along a sleeper longitudinal axis (6) and two longitudinal members , (5) spaced apart from one another by the cross member (4) and each , longitudinal member , (5) has a bearing (9) extending on a top face for mounting a rail element (10) above the , longitudinal member (5). Each longitudinal member (5) has one or more mounting devices , (26) for a rail fixing element (28) each for retaining a rail element (10) on the longitudinal , member (5) and at least one of the mounting devices (6) is disposed transversely offset from , the sleeper longitudinal axis (6) on …
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 February 14, 2005 and granted June 26, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 14, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.