Patents by Inventor King HO

King HO 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).

  • Capacitive liquid level sensor and liquid sensor assembly
    Patent number: 11976958
    Abstract: A capacitive liquid level sensor (1). The sensor comprises a sensor body in the form a tongue with a freely depending portion (3) extending to a distal tip (6) at its lowermost end. A set of spaced capacitive electrodes (7) extend along the tongue towards the distal tip. In use, when the distal tip (6) of the tongue is immersed in a body of liquid, the capacitance between the electrodes (7) changes depending on the depth of the body of liquid. The width of the tongue increases in the downward direction at least for part of the bottom half of the freely depending part of the tongue.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: May 7, 2024
    Assignee: CHARLES AUSTEN PUMPS LTD.
    Inventors: King Ho, William E. Shepherd
  • CAPACITIVE LIQUID LEVEL SENSOR AND LIQUID SENSOR ASSEMBLY
    Publication number: 20220026256
    Abstract: A capacitive liquid level sensor (1). The sensor comprises a sensor body in the form a tongue with a freely depending portion (3) extending to a distal tip (6) at its lowermost end. A set of spaced capacitive electrodes (7) extend along the tongue towards the distal tip. In use, when the distal tip (6) of the tongue is immersed in a body of liquid, the capacitance between the electrodes (7) changes depending on the depth of the body of liquid. The width of the tongue increases in the downward direction at least for part of the bottom half of the freely depending part of the tongue.
    Type: Application
    Filed: December 12, 2019
    Publication date: January 27, 2022
    Inventors: King HO, William E. SHEPHERD