Method for producing insulated winding wire by extruding thermoplasts
CA 1136817 A · Owner: Beck (Dr.) Co. Ag. · Inventors: Janssen, Harald; Kertscher, Eberhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved method of producing enamel-insulated winding wire is disclosed which comprises extruding around a conductor wire a coating of a partly crystalline thermoplastic having a crystallite melting point above 170°C and comprising an aromatic polyether ketone of the formula:, wherein each Ar may be the same or different and represents an aromatic radical and n signifies a whole number between 50 and 200. The product exhibits improved softening temperature meeting industry standards, as well as satisfactory heat-shock values and surface hardness.
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 December 7, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 7, 1999.
- 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.