Patents by Inventor Tak Chiu Alfred Lau

Tak Chiu Alfred 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).

  • Patent number: 8136257
    Abstract: A cutting tool includes a working member power coupled to a power drive arrangement held by a housing. The housing includes a front housing portion from which the working member protrudes and a rear housing portion. A first handle includes a first hand-grip portion adapted for a user to hold the power tool at an operative level above the ground level, a second handle adapted for a user to generate a turning moment about the first handle so as to vary inclination of the working member relative to the ground level. The second handle includes a movable hand-grip portion which is attached to the rear housing portion. The rear housing portion is pivotally connected to the front housing portion, and the movable hand-grip portion of the second handle is arranged to pivotally move the rear housing portion relative to the front housing portion.
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: March 20, 2012
    Assignee: Senson Investments Limited
    Inventor: Tak Chiu Alfred Lau
  • Publication number: 20090241350
    Abstract: A cutting tool comprising a working member power coupled to a power drive arrangement held by a housing, said housing comprising a front housing portion from which said working member protrudes and a rear housing portion, a first handle comprising a first hand-grip portion adapted for a user to hold said power tool at an operative level above the ground level, a second handle adapted for a user to generate a turning moment about said first handle so as to vary inclination of said working member relative to the ground level, said second handle comprising a movable hand-grip portion which is attached to said rear housing portion, characterized in that said rear housing portion is pivotally connected to said front housing portion, and said movable hand-grip portion of said second handle is arranged to pivotally move said rear housing portion relative to said front housing portion.
    Type: Application
    Filed: September 5, 2007
    Publication date: October 1, 2009
    Inventor: Tak Chiu Alfred Lau
  • Patent number: D601873
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: October 13, 2009
    Assignee: Senson Investments Limited
    Inventor: Tak Chiu Alfred Lau