Patents by Inventor Aafke G. Koster

Aafke G. Koster 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).

  • Nodal mounted system for driving a power appliance
    Patent number: 7627922
    Abstract: The power toothbrush, which has a rotating brushhead movement, includes a housing with a motor mounted therein having an armature which in operation rotates through an arc of predetermined magnitude. The toothbrush also includes a brushhead mounted on a shaft which is connected to an output mass. A spring assembly couples the armature to the output mass, the spring assembly including two spring portions with a node point therebetween, wherein when the armature rotates, the brushhead moves in an opposite direction. The frequency of the movement of the armature is set equal to the resonant frequency of the spring coupling system and the output assembly.
    Type: Grant
    Filed: October 15, 2007
    Date of Patent: December 8, 2009
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Kevin A. Miller, John W. Pace, Aafke G. Koster
  • Nodal mounted system for driving a power appliance
    Patent number: 7493669
    Abstract: The power toothbrush, which has a rotating brushhead movement, includes a housing with a motor mounted therein having an armature which in operation rotates through an arc of predetermined magnitude. The toothbrush also includes a brushhead mounted on a shaft which is connected to an output mass. A spring assembly couples the armature to the output mass, the spring assembly including two spring portions with a node point therebetween, wherein when the armature rotates, the brushhead moves in an opposite direction. The frequency of the movement of the armature is set equal to the resonant frequency of the spring coupling system and the output assembly.
    Type: Grant
    Filed: January 10, 2005
    Date of Patent: February 24, 2009
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Kevin A. Miller, John W. Pace, Aafke G. Koster
  • Nodal mounted system for driving a power appliance
    Patent number: 6859968
    Abstract: The power toothbrush, which has a rotating brushhead movement, includes a housing with a motor mounted therein having an armature which in operation rotates through an arc of predetermined magnitude. The toothbrush also includes a brushhead mounted on a shaft which is connected to an output mass. A spring assembly couples the armature to the output mass, the spring assembly including two spring portions with a node point therebetween, wherein when the armature rotates, the brushhead moves in an opposite direction. The frequency of the movement of the armature is set equal to the resonant frequency of the spring coupling system and the output assembly.
    Type: Grant
    Filed: June 24, 2002
    Date of Patent: March 1, 2005
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Kevin A. Miller, John W. Pace, Aafke G. Koster
  • Nodal mounted system for driving a power appliance
    Publication number: 20040000016
    Abstract: The power toothbrush, which has a rotating brushhead movement, includes a housing with a motor mounted therein having an armature which in operation rotates through an arc of predetermined magnitude. The toothbrush also includes a brushhead mounted on a shaft which is connected to an output mass. A spring assembly couples the armature to the output mass, the spring assembly including two spring portions with a node point therebetween, wherein when the armature rotates, the brushhead moves in an opposite direction. The frequency of the movement of the armature is set equal to the resonant frequency of the spring coupling system and the output assembly.
    Type: Application
    Filed: June 24, 2002
    Publication date: January 1, 2004
    Inventors: Kevin A. Miller, John W. Pace, Aafke G. Koster