Connecting device for connecting concrete segments
CA 2260028 A1 · Owner: Thomas, Norman Stanley · Inventors: Smith, Christopher Richard; Thomas, Norman Stanley
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A connecting device for connecting segments of concrete or similar settable material, the device including a plastics connector part (1) of dumb-bell-like form and two housing parts (4) for receiving respective opposite portions (2) of the connector part. Each housing part has an internal tapered form so that when the housing parts are set in opposed concrete segments to be connected and the connector part is inserted in the housing parts the taper of each , housing part causes the connector part to stretch thereby providing a tensile load between the opposite portions (2) of the connector part. Preferably the , taper has two angles of slope, the leading section causing the connector …
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 July 18, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 18, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 18, 2019.
- 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.