Expansion joint
CA 1077320 A · Owner: Elastometal Limited · Inventors: Fyfe, Edward R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An elongated expansion joint of the kind used between adjacent slabs in a road or building construction comprises, a pair of elongated anchor elements of rigid polymeric material adapted to be secured to the respective slab edges, and a laterally compressible web of more flexible material securable between the two anchor elements. One of the anchor elements may be secured to the web by means of a bead which snaps into a channel. The web may be of folded configuration with a rupturable membrane to hold the web to a predetermined spacing. The invention also comprises a method of forming an expansion joint between a pair of surfaces using a structure as specified.
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 13, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 13, 1997.
- 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.