Concrete beam connection sleeve
CA 2100834 C · Owner: Baur, Kenneth C. · Inventors: Baur, Kenneth C.; Keiser, Thomas E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A concrete beam connector sleeve has a tubular plastic body with a large dimensional end portion, a funnel portion joining the end portion, a rod guide portion joining the funnel portion a, bolting step joining the rod guide portion and a large dimension portion at the end of the sleeve away from the opposite end of the sleeve. The sleeve is cast in a cement column with the large dimension portion opening into a spandrel-supporting recess and the other large dimension portion opening into the opposite side of the column. A threaded rod mounted in a spandrel seated in the recess extends through the interior of the sleeve and past the bolting step. A nut threaded onto the end of the rod …
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 19, 1993 and granted September 2, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 19, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 19, 2015.
- 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.