Patents by Inventor Nidadavolu N. N. Rao

Nidadavolu N. N. Rao 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).

  • Internal combustion engine
    Patent number: 4445486
    Abstract: The invention relates to an improved internal combustion engine having an air cooled or liquid cooled cylinder head and a piston of low thermal conductivity and low thermal expansion material and a uniform clearance between the cylinder liner and piston around the circumference, the cylinder liner being provided with fins for cooling by natural convection in order to avoid loss of heat from the combustion chamber to the coolant for increased efficiency of the engine.
    Type: Grant
    Filed: September 28, 1983
    Date of Patent: May 1, 1984
    Assignee: Kirloskar Oil Engines Limited
    Inventor: Nidadavolu N. N. Rao