Plastic spanner with metal insert
CA 2008956 C · Owner: Demurger, Jean Pierre · Inventors: Demurger, Jean Pierre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A plastic tightening wrench with handle and gripping heads including a polygonal opening, in which an open metal insert (also polygonal) is countersunk. The walls of the insert form gripping jaws characterized as follows: The walls of the insert forming the jaws are parallel and extend slightly beyond the lateral faces of the openings of each gripping head. The metal insert is made of hard flexible and resilient metal, having a hardness ranging from 45 to 50 HRC. The thickness of the insert ranges from 0.5 to 0.7 times the thickness of the gripping head.
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 January 30, 1990 and granted April 13, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 30, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 30, 2012.
- 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.