Patents by Inventor Anna Kathryn Duncan
Anna Kathryn Duncan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9816221Abstract: The present invention relates to a washing machine (7) and pump (8) for a washing machine (7). The pump is driven by a brushless DC motor (38). The pump can be controlled to improve the operation of the washing machine. In one aspect the invention comprises a washing machine (7) with a variable speed pump (8) for pumping out wastewater, a controller (50) for controlling the speed of the pump and a sensor (10) for determining the flow-rate of water being pumped from the washing machine, wherein the controller (50) controls the speed of the pump to maintain the flow-rate at a desirable level.Type: GrantFiled: November 11, 2015Date of Patent: November 14, 2017Assignee: Fisher & Paykel Appliances LimitedInventors: Jonathan David Harwood, Hugh Griffith Johnson, Geoffrey Alan Lee, Gregory Paul Hill, Anna Kathryn Duncan, Adrian Anthony Sargeant
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Patent number: 9534328Abstract: A laundry machine configured to supply a first amount of water to the wash tub wherein a wash plate can be oscillated such that clothes items directly above and in contact with the impeller are frictionally dragged in a oscillatory manner with the wash chamber while continuing to oscillate said wash plate, an additional supply of water is added to said wash tub such that as cloth items lost frictional engagement with the wash plate, the cloth items continue to move along an inverse toroidal rollover path at higher water levels.Type: GrantFiled: May 21, 2012Date of Patent: January 3, 2017Assignee: Whirlpool CorporationInventors: Anna Kathryn Duncan, Erin Louise Hall, Geoffrey Walker, Gerald David Duncan, Flavio E. Bernardino, Mary Ellen Zeitler, David Wayne Carr
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Publication number: 20160215428Abstract: A laundry machine configured to supply a first amount of water to the wash tub wherein a wash plate can be oscillated such that clothes items directly above and in contact with the impeller are frictionally dragged in a oscillatory manner with the wash chamber while continuing to oscillate said wash plate, an additional supply of water is added to said wash tub such that as cloth items lost frictional engagement with the wash plate, the cloth items continue to move along an inverse toroidal rollover path at higher water levels.Type: ApplicationFiled: April 5, 2016Publication date: July 28, 2016Inventors: ANNA KATHRYN DUNCAN, ERIN LOUISE HALL, GEOFFREY WALKER, GERALD DAVID DUNCAN, FLAVIO E. BERNARDINO, MARY ELLEN ZEITLER, DAVID WAYNE CARR
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Publication number: 20160060802Abstract: The present invention relates to a washing machine (7) and pump (8) for a washing machine (7). The pump is driven by a brushless DC motor (38). The pump can be controlled to improve the operation of the washing machine. In one aspect the invention comprises a washing machine (7) with a variable speed pump (8) for pumping out wastewater, a controller (50) for controlling the speed of the pump and a sensor (10) for determining the flow-rate of water being pumped from the washing machine, wherein the controller (50) controls the speed of the pump to maintain the flow-rate at a desirable level.Type: ApplicationFiled: November 11, 2015Publication date: March 3, 2016Inventors: Jonathan David Harwood, Hugh Griffith Johnson, Geoffrey Alan Lee, Gregory Paul Hill, Anna Kathryn Duncan, Adrian Anthony Sargeant
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Patent number: 9212443Abstract: A pump for pumping water from a bowl of a washing machine is provided. The pump includes a housing coupled to the bowl and a cover with an aperture. The housing and the cover define an interior in fluid communication with the bowl interior via the aperture. A filter filters water entering the interior via the aperture. The filter has a profiled wall defining a volute around the aperture, and a hood disposed above the wall. The profile of the hood perimeter substantially corresponding to the profiled wall to define a profiled space between the perimeter and the profiled wall. The profiled space allows water to enter the volute but substantially prevents elongated objects entering the volute.Type: GrantFiled: September 2, 2010Date of Patent: December 15, 2015Assignee: Fisher & Paykel Appliances LimitedInventors: Jonathan David Harwood, Hugh Griffith Johnson, Geoffrey Alan Lee, Gregory Paul Hill, Anna Kathryn Duncan, Adrian Anthony Sargeant
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Publication number: 20120227189Abstract: A laundry machine configured to supply a first amount of water to the wash tub wherein a wash plate can be oscillated such that clothes items directly above and in contact with the impeller are frictionally dragged in a oscillatory manner with the wash chamber while continuing to oscillate said wash plate, an additional supply of water is added to said wash tub such that as cloth items lost frictional engagement with the wash plate, the cloth items continue to move along an inverse toroidal rollover path at higher water levels.Type: ApplicationFiled: May 21, 2012Publication date: September 13, 2012Applicant: WHIRLPOOL CORPORATIONInventors: ANNA KATHRYN DUNCAN, ERIN LOUISE HALL, GEOFFREY WALKER, GERALD DAVID DUNCAN, FLAVIO E. BERNARDINO, MARY ELLEN ZEITLER, DAVID WAYNE CARR
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Publication number: 20120017647Abstract: A laundry machine configured to supply a first amount of water to the wash tub wherein a wash plate can be oscillated such that clothes items directly above and in contact with the impeller are frictionally dragged in a oscillatory manner with the wash chamber while continuing to oscillate said wash plate, an additional supply of water is added to said wash tub such that as cloth items lost frictional engagement with the wash plate, the cloth items continue to move along an inverse toroidal rollover path at higher water levels.Type: ApplicationFiled: September 29, 2011Publication date: January 26, 2012Applicant: WHIRLPOOL CORPORATIONInventors: ANNA KATHRYN DUNCAN, ERIN LOUISE HALL, GEOFFREY WALKER, GERALD DAVID DUNCAN, FLAVIO E. BERNARDINO, MARY ELLEN ZEITLER, DAVID WAYNE CARR
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Patent number: 8028550Abstract: A laundry machine configured to supply a first amount of water to the wash tub wherein a wash plate can be oscillated such that clothes items directly above and in contact with the impeller are frictionally dragged in a oscillatory manner with the wash chamber while continuing to oscillate said wash plate, an additional supply of water is added to said wash tub such that as cloth items lost frictional engagement with the wash plate, the cloth items continue to move along an inverse toroidal rollover path at higher water levels.Type: GrantFiled: January 20, 2011Date of Patent: October 4, 2011Assignee: Whirlpool CorporationInventors: Anna Kathryn Duncan, Erin Louise Hall, Geoffrey Walker, Gerald David Duncan, Flavio E. Bernardino, Mary Ellen Zeitler, David Wayne Carr
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Publication number: 20110107799Abstract: A laundry machine configured to supply a first amount of water to the wash tub wherein a wash plate can be oscillated such that clothes items directly above and in contact with the impeller are frictionally dragged in a oscillatory manner with the wash chamber while continuing to oscillate said wash plate, an additional supply of water is added to said wash tub such that as cloth items lost frictional engagement with the wash plate, the cloth items continue to move along an inverse toroidal rollover path at higher water levels.Type: ApplicationFiled: January 20, 2011Publication date: May 12, 2011Applicant: Whirlpool CorporationInventors: Anna Kathryn Duncan, Erin Louise Hall, Geoffrey Walker, Gerald David Duncan, Flavio E. Bernardino, Mary Ellen Zeitler, David Wayne Carr
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Patent number: 7874187Abstract: A laundry machine configured to supply a first amount of water to the wash tub wherein a wash plate can be oscillated such that clothes items directly above and in contact with the impeller are frictionally dragged in a oscillatory manner with the wash chamber while continuing to oscillate said wash plate, an additional supply of water is added to said wash tub such that as cloth items lost frictional engagement with the wash plate, the cloth items continue to move along an inverse toroidal rollover path at higher water levels.Type: GrantFiled: September 7, 2006Date of Patent: January 25, 2011Assignees: Whirlpool Corporation, Fisher & PaykelInventors: Anna Kathryn Duncan, Erin Louise Hall, Geoffrey Walker, Gerald David Duncan, Flavio E. Bernardino, Mary Ellen Zeitler, David Wayne Carr
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Publication number: 20110000558Abstract: A pump for pumping water from a bowl of a washing machine is provided. The pump includes a housing coupled to the bowl and a cover with an aperture. The housing and the cover define an interior in fluid communication with the bowl interior via the aperture. A filter filters water entering the interior via the aperture. The filter has a profiled wall defining a volute around the aperture, and a hood disposed above the wall. The profile of the hood perimeter substantially corresponding to the profiled wall to define a profiled space between the perimeter and the profiled wall. The profiled space allows water to enter the volute but substantially prevents elongated objects entering the volute.Type: ApplicationFiled: September 2, 2010Publication date: January 6, 2011Inventors: JONATHAN DAVID HARWOOD, HUGH GRIFFITH JOHNSON, GEOFFREY ALAN LEE, GREGORY PAUL HILL, ANNA KATHRYN DUNCAN, ADRIAN ANTHONY SARGEANT
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Patent number: 7810362Abstract: The present invention relates to a washing machine (7) and pump (8) for a washing machine (7). The pump is driven by a brushless DC motor (38). The pump can be controlled to improve the operation of the washing machine. In one aspect the invention comprises a washing machine (7) with a variable speed pump (8) for pumping out wastewater, a controller (50) for controlling the speed of the pump and a sensor (10) for determining the flow-rate of water being pumped from the washing machine, wherein the controller (50) controls the speed of the pump to maintain the flow-rate at a desirable level.Type: GrantFiled: November 6, 2006Date of Patent: October 12, 2010Assignee: Fisher & Paykel Appliances Ltd.Inventors: Jonathan David Harwood, Hugh Griffith Johnson, Geoffrey Alan Lee, Gregory Paul Hill, Anna Kathryn Duncan, Adrian Anthony Sargeant