Dynamoelectric machine having coil windings and core encapsulated with resin-filler composition
CA 1080295 A · Owner: Hitachi, Ltd. · Inventors: Yokono, Hitoshi; Kinjo, Noriyuki; Katagiri, Junichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a dynamoelectric machine having a stator assembly of coil windings and a core. A beat-dissipating electro-insulative housing encapsulates the coil windings and the core. The housing is made of a cured article of a resin-filler composition which comprises a liquid unsaturated polyester resin, a finely divided calcium carbonate powder, an inorganic mineral particulate having a particle size larger than that of the calcium carbonate powder and, a chopped glass fiber, wherein the ratio by weight of the calcium carbonate to the mineral particulate is 0.3 to 4 the, ratio of the glass fiber to the total weight of the composition is 0.5 to 0.25, the ratio 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
- Granted June 24, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 24, 1997.
- 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.