Water level determination for laundry washing machine
CA 2181879 C · Owner: Fisher & Paykel Limited · Inventors: Hood, Paul Stephen; Harwood, Jonathan David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A laundry washing machine in which a suitable level of water is automatically determined for any particular load size. The machine is operated to first determine, an initial estimation of the clothes load and to then fill to a water level suitable to the, initial load estimation. The machine is then operated in such a way to check if the, estimated water level is actually sufficient for the clothes load essentially , by, determining the resulting load on the laundry machine motor. If the water level is, found to be insufficient then more water is added before the checking routine is, carried out once again. When the water level is determined to be suitable for the, clothes load, …
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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
- Filed July 23, 1996 and granted April 23, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 23, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 23, 2018.
- 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.