Brush assembly structure for motor
CA 2116988 C · Owner: Mitsuba Corporation · Inventors: Okabe, Hiroji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a brush assembly structure for a motor arranged as described below. A brush holder 23 is integrally formed to substantially a C-shape so that the extreme ends of the opposite leg portions 23b, 23c of the brush holder 23 confront the opposite side positions of a commutator 10 in the diametrical direction thereof, and brush accommodation units 24, 25 are formed at the extreme ends of the opposite leg portions. Further, brush springs 13, 14 are attached to the cylindrical bottom portion 9b of a holder stay unit and the brush springs elastically depress brushes 26 27 accommodated, in the brush accommodation units at the moment when the brushes 26, 27 reach the positions of 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 March 4, 1994 and granted August 17, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 4, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 4, 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.