Patents by Inventor Raymond R. Petersen

Raymond R. Petersen 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).

  • Foam liquid proportioner
    Patent number: 4448256
    Abstract: A foam liquid proportioner including a positive displacement water motor coupled to a positive displacement foam liquid pump is provided with a gear drive mechanism which steps up the RPM of the foam liquid pump to be much higher than the RPM of the water motor to a speed so as to reduce the ratio of the slippage of foam liquid to the total flow of the foam liquid through the foam liquid pump.
    Type: Grant
    Filed: January 28, 1982
    Date of Patent: May 15, 1984
    Assignee: Hale Fire Pump Company
    Inventors: H. Alfred Eberhardt, Kenneth F. Hoffman, Raymond R. Petersen
  • Rotary valve
    Patent number: 4024886
    Abstract: An in-line ball valve having a locking device which permits the positioning of the valve member to a set position by operation of a valve handle with the valve member being locked in this position against any creeping movement by reason of flow-induced forces acting on the valve member. The valve also includes a handle design which permits the handle to be positioned on the shaft of the valve member in eight different handle configurations to provide for simplicity of installation and ease of adaptability to push-pull controls.
    Type: Grant
    Filed: April 29, 1976
    Date of Patent: May 24, 1977
    Assignee: Hale Fire Pump Company
    Inventors: H. Alfred Eberhardt, Kenneth F. Hoffman, Raymond R. Petersen