Patents by Inventor Fujun Cao

Fujun Cao 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: 8272376
    Abstract: A gas cooker control system includes an ignition controller including a touch button, a resistor, a first comparator, a second comparator and a third comparator, one end of the touch button connected to external power source, and the other end connected to first inputs of the first, second and third comparators, the resistor being connected between the inputs of the first, second and third comparators and ground, outputs of the first, second and third comparators being connected to an igniter, a gas valve and a system power source; a gas valve controller including a switch circuit connected to a power source, at least one gas valve circuit connected between the switch circuit and ground, and a protection circuit parallel to the at least on gas valve circuit; and a power and ignition controller driving device including a power source driving circuit, an ignition driving circuit and a comparison circuit.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: September 25, 2012
    Assignee: Shenzhen H & T Intelligent Control Co., Ltd.
    Inventors: Fei Ma, Fujun Cao, Jianwei Liu, Zhaobing Shou
  • Publication number: 20100288262
    Abstract: A gas cooker control system includes an ignition controller includes a touch button, a resistor, a first comparator, a second comparator and a third comparator, the touch button comprising an end connected to external power source, and the other end connected to first inputs of the first, second and third comparators, the resistor being connected between the inputs of the first, second and third comparators and ground, second inputs of the first, second and third comparators being configured for providing a first reference voltage, a second reference voltage and a third reference voltage respectively, outputs of the first, second and third comparators being connected to an igniter, a gas valve and a system power source, a voltage of the external power source being greater than the first reference voltage, the first reference voltage being greater than the second reference voltage, the second reference voltage being greater than the third reference voltage; a gas valve controller including a switch circuit con
    Type: Application
    Filed: April 25, 2008
    Publication date: November 18, 2010
    Inventors: Fei Ma, Fujun Cao, Jianwei Liu, Zhaobing Shou