Electric motor and brush retaining assembly
CA 2390392 A1 · Owner: Finkenbinder, David B. · Inventors: Marsden, Jeffrey D.; Finkenbinder, David B.; Wu, Huanbo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention generally provides a motor-fan unit including a motor assembly having a shaft, a commutator supported on the shaft and a pair of , brushes in, electrical contact with the commutator a fan assembly having an impeller , coupled to the shaft, an end plate assembly located between the impeller and the motor assembly, said, end plate assembly including a plate portion defining an opening throughwhich the shaft, passes, wherein said commutator is located near the opening and a pair of , brush retainers, adapted to receive the brushes formed on the plate portion adjacent said commutator, the, brush retainers opening toward the fan assembly.
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 July 3, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 3, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 3, 2024.
- 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.