Patents by Inventor James P. Koening

James P. Koening 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).

  • Air dryer purge control for turbocharged compressors
    Patent number: 4714483
    Abstract: A compressed air system includes an air compressor the inlet of which is communicated to the vehicle engine turbocharger. The outlet of the air compressor is communicated through an air dryer to a storage reservoir. A governor is responsive to the pressure level in the reservoir to generate an unloading signal unloading the air compressor when the pressure in the reservoir attains a predetermined value. The unloading signal is also communicated through a control valve to purge the air dryer during compressor unloading. The control valve closes communication between the governor and the air dryer to trap a predetermined pressure level in the purge volume of the air dryer to prevent the air dryer from purging to atmospheric pressure. Accordingly, a predetermined air pressure level is maintained in the purge volume, so that the outlet of the turbocharger can never be communicated to atmospheric pressure.
    Type: Grant
    Filed: June 13, 1986
    Date of Patent: December 22, 1987
    Assignee: Allied Corporation
    Inventors: James P. Koening, David J. Knight, James E. Szudy, Roy E. Bartholomew, William R. Wurst