Collector ring assembly for rotor shaft of electrical machine
CA 2449588 A1 · Owner: Illinois Tool Works Inc. · Inventors: Radtke, David E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rotor assembly having a rotor shaft, a rotor winding mounted to the rotor shaft, an electrically insulative body mounted to the rotor shaft an, electrically conductive collector ring supported by the electrically insulative, body, a wire lead electrically connecting the winding to the collector ring and a, fastener engaged with a boss of the collector ring. The wire lead has a portion, that is wrapped around a first portion of the fastener and pressed into contact, with the boss of the collector ring by a second portion of the fastener. A collector ring assembly having two or more collector rings is formed by insert molding.
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 November 18, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 18, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 18, 2025.
- 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.