Patents by Inventor Malcolm John Hird

Malcolm John Hird 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).

  • Patent number: 6892408
    Abstract: The invention provides a method of operating a laundry appliance (10) comprising an outer casing (12) and a drum (50) rotatably mounted within the outer casing (12), the drum (50) having at least two rotatable portions (60, 70) which are capable of being rotated in either a synchronized mode or a non-synchronized mode, the method comprising the steps of: (a) introducing water to the interior of the drum (50); (b) heating the water to a desired temperature; (c) rotating the drum (50) to effect a washing action; and (d) spinning the drum (50) at a relatively high speed so as to remove water therefrom. In one aspect, the drum (50) is rotated in the non-synchronized mode either during or immediately after the step of introducing water to the interior of the drum (50). This helps to distribute the washing liquid throughout the wash load.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: May 17, 2005
    Assignee: Dyson Limited
    Inventors: Guy Austin Goddard, Malcolm John Hird, David Ions
  • Patent number: 6843079
    Abstract: A laundry appliance comprises a drum for receiving articles to be laundered, the drum comprising at least two rotatable drum portions and a drive capable of operating the drum in a plurality of different drum modes. The drum modes include a mode in which the rotatable drum portions are driven so as to cause relative rotation between them. A controller (100) controls the appliance to perform a plurality of different wash programs, each wash program having an associated drum mode. Each wash program comprises a sequence of stages, with a drum mode being associated with each stage. The drum modes can differ in respect of (a) use (or non-use) of relative rotation between the drum portions (b) the ratio of time that the drum portions rotate compared to the time that they are at rest, and (c) the speed at which the drum portions are rotated. The intensity of a wash program can be varied, inter alia, by varying the length of the wash stage.
    Type: Grant
    Filed: March 14, 2001
    Date of Patent: January 18, 2005
    Assignee: Dyson Limited
    Inventor: Malcolm John Hird
  • Publication number: 20040019977
    Abstract: The invention provides a method of operating a laundry appliance (10) comprising an outer casing (12) and a drum (50) rotatably mounted within the outer casing (12), the drum (50) having at least two rotatable portions (60, 70) which are capable of being rotated in either a synchronized mode or a non-synchronized mode, the method comprising the steps of: (a) introducing water to the interior of the drum (50); (b) heating the water to a desired temperature; (c) rotating the drum (50) to effect a washing action; and (d) spinning the drum (50) at a relatively high speed so as to remove water therefrom. In one aspect, the drum (50) is rotated in the non-synchronized mode either during or immediately after the step of introducing water to the interior of the drum (50). This helps to distribute the washing liquid throughout the wash load.
    Type: Application
    Filed: March 11, 2003
    Publication date: February 5, 2004
    Inventors: Guy Austin Goddard, Malcolm John Hird, David Ions
  • Publication number: 20030145392
    Abstract: A laundry appliance, such as a washing machine, comprises a drum for receiving a load of articles to be laundered. The drum comprises at least two rotatable drum portions and a drive which can rotate the drum portions relative to one another. A controller causes the appliance to perform a laundering cycle which includes a spin cycle in which the drum is rotated at high speed. Before the spin cycle, the controller detects whether there is an imbalance of the load in the drum and, in the event of an imbalance, the controller causes the appliance to redistribute the load by causing the drive rotate the drum portions relative to one another. In the event of a continued imbalance, the controller can repeat the redistribute operation or it can limit the spin speed during the spin cycle.
    Type: Application
    Filed: November 13, 2002
    Publication date: August 7, 2003
    Inventor: Malcolm John Hird
  • Publication number: 20030061840
    Abstract: A laundry appliance comprises a drum for receiving articles to be laundered, the drum comprising at least two rotatable drum portions and a drive capable of operating the drum in a plurality of different drum modes. The drum modes include a mode in which the rotatable drum portions are driven so as to cause relative rotation between them. A controller (100) controls the appliance to perform a plurality of different wash programmes, each wash programme having an associated drum mode. Each wash programme comprises a sequence of stages, with a drum mode being associated with each stage. The drum modes can differ in respect of (a) use (or non-use) of relative rotation between the drum portions (b) the ratio of time that the drum portions rotate compared to the time that they are at rest, and (c) the speed at which the drum portions are rotated. The intensity of a wash programme can be varied, inter alia, by varying the length of the wash stage.
    Type: Application
    Filed: September 16, 2002
    Publication date: April 3, 2003
    Inventor: Malcolm John Hird