Patents by Inventor Kwok Wai Chow

Kwok Wai Chow 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).

  • Heating pad with temperature control and safety protection device
    Patent number: 8143559
    Abstract: A heating pad is provided. The heating pad includes a heating element and a control circuit operatively connected to the heating element for providing a predetermined level of power thereto. An isolation device interconnects a power source to the control circuit. The isolation device has a first open configuration preventing transmission of electrical power therethrough and a second closed configuration allowing transmission of electrical power therethrough. The control circuit terminates power to the heating element in response to the heating element exceeding a first temperature limit. The isolation device moves from the closed configuration to the open configuration in response to the heating element exceeding a second temperature limit.
    Type: Grant
    Filed: September 1, 2009
    Date of Patent: March 27, 2012
    Assignee: Advance Thermo Control, Ltd.
    Inventor: Kwok Wai Chow
  • Heating Pad With Temperature Control And Safety Protection Device
    Publication number: 20110049128
    Abstract: A heating pad is provided. The heating pad includes a heating element and a control circuit operatively connected to the heating element for providing a predetermined level of power thereto. An isolation device interconnects a power source to the control circuit. The isolation device has a first open configuration preventing transmission of electrical power therethrough and a second closed configuration allowing transmission of electrical power therethrough. The control circuit terminates power to the heating element in response to the heating element exceeding a first temperature limit. The isolation device moves from the closed configuration to the open configuration in response to the heating element exceeding a second temperature limit.
    Type: Application
    Filed: September 1, 2009
    Publication date: March 3, 2011
    Inventor: Kwok Wai Chow