Patents by Inventor Robert R. Dobbin

Robert R. Dobbin 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).

  • Patent number: 4321096
    Abstract: A bar is intermittently movable through an explosion sensing port in the wall of a chamber for cleaning the port without blocking it. The chamber is coupled to a mechanism for introducing a suppression agent into the chamber for suppressing or smothering an explosion within the chamber, and further has a pressure responsive device for actuating the explosion suppressing mechanism whenever the fluid pressure sensed through the sensing port reaches a predetermined value due to an explosion within the chamber. A duct fluidly connects the sensing port to the pressure responsive device, and the bar is movably mounted within a portion of the duct.
    Type: Grant
    Filed: December 16, 1980
    Date of Patent: March 23, 1982
    Assignee: John B. Pike & Son, Inc.
    Inventor: Robert R. Dobbin