Patents by Inventor Andrew Manson Lau

Andrew Manson Lau 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).

  • Combination device for snow throwing, mowing, scarifying, soil breaking or the like
    Patent number: 7984573
    Abstract: A combination device (1) is provided for carrying out various work tasks, such as cutting snow, mowing, scarifying, soil breaking or the like. The device includes a plurality of interchangeable work implements (60) tailored to the respective work task. A basic frame is provided in which the respective work implement (60) is accommodated and can be driven to rotate, and wherein the respectively installed work implement (60) is partially enclosed by a housing (23) extending parallel to the axis of rotation of the work implement. In order to tailor the combination device optimally to the respective work task, provision is made for the housing (23) to be able to rotate about an axis parallel to the axis of rotation of the respective work implement (60) and to be fastened in various operating positions corresponding to the respective work task.
    Type: Grant
    Filed: November 7, 2007
    Date of Patent: July 26, 2011
    Inventor: Andrew Manson Lau