Power supply arrangement for a control circuit
CA 2221230 C · Owner: Maytag Corporation · Inventors: Wetekamp, Robert L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an appliance having a nominally required product load and control components for controlling functions not directly related to those of the nominally required product load, the control components operating at voltages which are relatively low in comparison with those utilized by the nominally required product load, a portion of the nominally required product load is connected in series with the control components to serve as a voltage step down circuit whose output corresponds to the relatively low voltages required by the control components. The control components may include those used to operate a refrigerator door ice and water dispenser and may, provide additional accessory …
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
- Filed November 14, 1997 and granted April 3, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 14, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 14, 2019.
- 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.