Patents by Inventor Richard S. Theurer

Richard S. Theurer 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).

  • Spray nozzle with discrete open/close deadband and method therefor
    Patent number: 5799871
    Abstract: A valved nozzle for spraying fuel oil and method therefor includes an inlet, a discharge chamber downstream of the inlet, and a flow restricting orifice downstream of the discharge chamber. The pressure in both the inlet and the discharge chamber urges the valved spray nozzle to open. The valved spray nozzle abruptly opens by the inlet pressure rising above a predetermined upper pressure limit and abruptly closes upon falling to a lower limit. The span between the upper and lower limits defines a very definite deadband across which leakage is avoided at intermediate pressures.
    Type: Grant
    Filed: March 13, 1996
    Date of Patent: September 1, 1998
    Assignee: Hago Industrial Corp.
    Inventor: Richard S. Theurer