Patents by Inventor Hardip S. Dhingra

Hardip S. Dhingra 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).

  • Off gas film cooler cleaner
    Patent number: 5659915
    Abstract: An apparatus for cleaning depositions of particulate matter from the inside of tubular piping while the piping is in use. The apparatus is remote controlled in order to operate in hazardous environments. A housing containing brush and shaft assemblies is mounted on top of the tubular piping. Pneumatic cylinders provide linear motion. A roller nut bearing provides rotary motion. The combined motion causes the brush assembly to rotate as it travels along the tube dislodging particulate matter.
    Type: Grant
    Filed: October 13, 1995
    Date of Patent: August 26, 1997
    Assignee: United States Department of Energy
    Inventors: Hardip S. Dhingra, William C. Koch, David C. Burns