Patents by Inventor Neil A. Ovenden

Neil A. Ovenden 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).

  • Fuel burner apparatus and a method of control
    Patent number: 4994959
    Abstract: An air-fuel ratio programmable control method for a fuel burner installation, and a fuel burner installation adapted to operate by the control method. In the method, an error (Ep) is determined by subtraction of an input (Po) representative of the existing firing rate and an input (Pn) representative of the required firing rate; depending on whether Ep is positive or negative, fuel and air supplies to the burner are modulated in either air-led or fuel-led manner, respectively, to set the firing rate to the desired value (Pn); in addition, the error (Ep) is compared to a predetermined breakpoint (Xp) so that if Ep exceeds Xp fuel and air supplies to the burner can be modulated simultaneously for fast control action.
    Type: Grant
    Filed: November 30, 1988
    Date of Patent: February 19, 1991
    Assignees: British Gas plc, Osaka Gas Co., Tokyo Gas Co. Ltd.
    Inventors: Neil A. Ovenden, Tsuyoshi Kimura, Keiichi Minamino