Direct current machine
CA 1237461 A · Owner: Mitsuba Electric Manufacturing Co. Ltd · Inventors: Otaki, Hiroyuki; Kanbe, Osami; Matsunaga, Katsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A direct current machine has an armature in, which a plurality of wave wound coils are supported by slots in juxtaposition to a plurality of field poles. The wave winding is modified in that each of the coils is wound as two or more divided coil portions for the coil winding, with corresponding sides of the portions of a coil being wound in peripherally adjacent slots of the armature.
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
- Granted May 31, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 31, 2005.
- 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.