Patents Assigned to Senson Investments Limited
  • 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
  • Patent number: 5499424
    Abstract: A cleaning head for use with suction means particularly suitable for cleaning hard, flat and smooth surfaces, such as glass or marble walls. The cleaning head is equipped with attachments for cleansing liquid application, scrubbing, wiping and waste liquid removal in one piece and is normally closed so that no waste liquid inside the head will leak out during quiescent operating condition.
    Type: Grant
    Filed: October 7, 1994
    Date of Patent: March 19, 1996
    Assignee: Senson Investments Limited
    Inventor: Alfred T. 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