System for interlocking perpendicular members
CA 2113870 C · Owner: Riesberg, James J. · Inventors: Riesberg, James J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system to join two substantially perpendicular members tightly together. This system finds particular application where it is desired to secure a subfloor to an underlying joist to eliminate squeaking and to rectify a "spongy" floor through reinforcement. The system comprises a brace and a pair of screws of different lengths. The brace includes a pair of working surfaces that meet to form a ninety-degree corner. A flange extends from one of the working surfaces for placement between the top side of the joist and the bottom side of the subfloor. The brace has a pair of parallel pilot holes defined therein for receiving the two screws. The pilot holes are disposed at about a thirty-degree …
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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 January 20, 1994 and granted December 30, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 20, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 20, 2016.
- 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.