Patents by Inventor Yee Chung Chak

Yee Chung Chak 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: 7841550
    Abstract: A cutting assembly for positioning at the intake end of a centrifugal pump used for pumping liquids and slurries containing solid matter, including various types of refuse, and for chopping the solid matter which may thereafter be processed for disposal is disclosed. The cutting assembly includes an intake end plate having a body defining the opening to allow the passage of material, such as waste water and the like, therethrough. The intake end plate attaches at the intake end of the chopper pump. The assembly also includes at least one, and preferably a plurality of cutter bars projecting from the body of the intake end plate into the opening, and a nut positioned at the intake end and attached to the chopper pump within the opening of the intake end plate.
    Type: Grant
    Filed: November 20, 2007
    Date of Patent: November 30, 2010
    Assignee: Vaughan Co., Inc.
    Inventors: Glenn Robert Dorsch, Kent Harrison Keeran, Yee Chung Chak