Toroidal transformer and machines and methods for making same
CA 1296511 C · Owner: Curtis, Joe E. Jr. · Inventors: Cloyd, John E.; Schlake, Randall L.; Martin, Richard W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for making a toroidal transformer by unreeling a strip of a core material from the inside of a coil of the core material and by winding the strip of the core material into prewound primary and secondary windings of the transformer. The apparatus has a turntable for rotating the coil about its axis in a direction to continually unwind the strip of core material from the inside of the coil. There is a directing device for receiving the strip of material from the inside of the coil and for directing the strip of material away from the coil. A retarding force can be applied to the strip of material to push the strip against the inside of the coil to minimize bending of the strip as …
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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 March 3, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 3, 2009.
- 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.