Wheel slip correction system
CA 1048127 A · Owner: General Electric Company · Inventors: Smith, Russell M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wheel slip control system for electric traction motor drives employing series-type direct current traction motors having field and armature windings connected in series electrical circuit relationship. The improvement comprises a current transformer having primary and secondary windings wound on a common core. The primary winding is serially connected in the supply connection between an alternating current power source and a power rectifier. The secondary rectifier is provided with its output connected to supply auxiliary field current to the field winding of each series-type direct current traction motor in addition to the normal direct current excitation supplied through the power …
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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
- Granted February 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 6, 1996.
- 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.