Patents by Inventor John Carl Bessman

John Carl Bessman 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).

  • Apparatus to seal a shaft to a diaphragm for use in diaphragm actuators
    Patent number: 7647861
    Abstract: Apparatus to seal a shaft to a diaphragm in a diaphragm actuator are disclosed. An example apparatus for use in a diaphragm actuator has a central aperture and an integral sealing protrusion disposed about a circumference of the central aperture. The sealing protrusion is configured to sealingly engage a shaft of the diaphragm actuator.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: January 19, 2010
    Assignee: Fisher Controls International LLC
    Inventor: John Carl Bessman
  • APPARATUS TO SEAL A SHAFT TO A DIAPHRAGM FOR USE IN DIAPHRAGM ACTUATORS
    Publication number: 20080149877
    Abstract: Apparatus to seal a shaft to a diaphragm in a diaphragm actuator are disclosed. An example apparatus for use in a diaphragm actuator has a central aperture and an integral sealing protrusion disposed about a circumference of the central aperture. The sealing protrusion is configured to sealingly engage a shaft of the diaphragm actuator.
    Type: Application
    Filed: December 22, 2006
    Publication date: June 26, 2008
    Inventor: John Carl Bessman