Expansion joint
CA 1237010 A · Owner: A E Plc · Inventors: Mileham, Glen B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An expansion joint for a structure such as a bridge or roadway comprising a pair of elongate tubes 14, 16 each having a longitudinal slot 24 26, and a relatively wider channel 32, 34 and a folded strip 22 of polymeric material. The tubes 14 16, are fixed to the structure by means of anchors 18, 20. The strip has bulbous edge portions 36 38, which are located in the channels 32 34. The, strip 22 and tubes 14, 16 are located below the level of the structure surface.
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
- Granted May 24, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 24, 2005.
- 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.