Patents by Inventor Paul R. Smallwood, Jr.

Paul R. Smallwood, Jr. 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).

  • Method and apparatus for surge detection and control in centrifugal gas compressors
    Patent number: 4363596
    Abstract: A centrifugal gas compressor having a shrouded rotatable impeller 14 in an impeller chamber 40, and provided with capacity control vanes 30 and a diffuser passage 18 throttle plate 38, is provided with surge control means including a thermistor 50 which senses a temperature rise beyond a predetermined value in the impeller chamber and exterior of the gas flow path through the impeller, and through relay means such as 52, 58 electrically connected to the thermistor 50 operates to change the compressor operation to a nonsurging condition.
    Type: Grant
    Filed: May 19, 1980
    Date of Patent: December 14, 1982
    Assignee: McQuay-Perfex, Inc.
    Inventors: Thomas E. Watson, Paul R. Smallwood, Jr.
  • Method and apparatus for surge detection and control in centrifugal gas compressors
    Patent number: 4265589
    Abstract: A centrifugal gas compressor having a shrouded rotatable impeller 14 in an impeller chamber 40, and provided with capacity control vanes 30 and a diffuser passage 18 throttle plate 38, is provided with surge control means including a thermistor 50 which senses a temperature rise beyond a predetermined value in the impeller chamber and exterior of the gas flow path through the impeller, and through relay means such as 52, 58 electrically connected to the thermistor 50 operates to change the compressor operation to a nonsurging condition.
    Type: Grant
    Filed: June 18, 1979
    Date of Patent: May 5, 1981
    Assignee: Westinghouse Electric Corp.
    Inventors: Thomas E. Watson, Paul R. Smallwood, Jr.