Drain nut pliers
CA 2220863 C · Owner: Gilbert, David S. Jr. · Inventors: Gilbert, David S. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Cross pivoted handled pliers are disclosed having two elongated members (6 8) , joined together by a fixed pivot pin (12) and each having an arcuate jaw , portion (18) and a handle portion (14). The arcuate jaw portions have circular grooves (24) and recesses (26) therein to receive ribs (34) and ears (32) on an outer surface of a drain nut (30). The arcuate jaw portions additionally have a plurality of spaced teeth arrays (20 22) formed on inner surfaces , thereof which correspond to drain nuts of various diameters.
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 May 6, 1996 and granted July 25, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 6, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 6, 2018.
- 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.