Rail pads
CA 2284576 A1 · Owner: Glynwed Pipe Systems Limited · Inventors: Wildgoose, Thomas William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides an elastomeric rail pad (1) of generally rectangular plan configuration, the pad having an upper face (2) adapted to underlie the lower face of a rail, and a lower face (5) adapted to overlie a concrete rail foundation member characterised in that the pad includes a reinforcement means (13) which is generally parallel to its mean plane and extends at least between dispositions associated with generally opposing corners of the generally rectangular pad (1), said reinforcing means (13) having a tensile strength such as to resist, in use of the pad (1) forces from traffic passing , across the rail disposed therabove otherwise tending to stretch the pad (1) in 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 March 13, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 13, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 13, 2020.
- 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.