Brush section for an electric toothbrush
CA 2202256 C · Owner: Kressner, Gerhard · Inventors: Herzog, Karl; Driesen, Georges; Hilfinger, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is directed to a brush section (1) for an electric toothbrush, which includes a mounting tube (2) in which a shaft (7) arranged in the direction of a longitudinal axis (3) is received. Two bristle carriers (14, 15) are mounted for rotation about associated brush axes (24 25). Further, means are, provided, in particular two connecting rods (30 31), to effect, coupling engagement of the shaft (7) with the two bristle carriers (14, 15), such that a motion (36) of the shaft (7) effects a rotary motion (37, 38) of the two bristle carriers (14 15), about the two brush axes (24, 25) . The two brush axes (24,25) are arranged in a plane approximately at right angles to the …
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 August 16, 1995 and granted May 9, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 16, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 16, 2017.
- 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.