Device to remove entangled hair from hairbrushes and the like
CA 2068595 C · Owner: Marleau, Gilles · Inventors: Marleau, Gilles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A simple and widely applicable device for aiding quick removal of matted or entangled hair, string or other, longitudinally extensive material from brushes used to stroke or collect such material. For flat brushes the device consists either of a pivoting wire lifter which lifts material away from the brush, or a sliding member which will move accumulated hair to one end of the brush, for round brushes a cutter that runs in a groove in the brush, or a combination of the cutter and the lifter or sliding member. The device is useful for many types of brushes including all manner of hairbrushes for people or animals, and for vacuum-cleaner power-head rotary brushes and manual sweeper rotary …
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 13, 1992 and granted January 30, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 13, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 13, 2014.
- 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.