Patents by Inventor Robert Leslie Penfield

Robert Leslie Penfield 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).

  • Steam trap with integrated temperature sensors
    Patent number: 8573250
    Abstract: A steam trap comprises a housing defining a flow passage extending between an inlet and an outlet. A cap fitted to the housing has a stop face. In addition, the housing and the cap define a trap chamber. A movable valve element is located in the trap chamber. The steam trap further comprises a first temperature sensor having an inlet sensing portion in the flow path between the inlet and valve element. A second temperature sensor has an outlet sensing portion in the flow path between the valve element and the outlet.
    Type: Grant
    Filed: September 1, 2009
    Date of Patent: November 5, 2013
    Assignee: Spirax Sarco, Inc.
    Inventors: Bernard J. Radle, Robert Leslie Penfield