Patents by Inventor Estelle Kelem

Estelle Kelem 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).

  • Six stroke internal combustion engine and method of operation
    Patent number: 7726268
    Abstract: An internal combustion engine includes an arrangement of cylinders each having a reciprocating piston operatively linked to a crankshaft. The cycle for each cylinder includes an intake stroke, a compression stroke, a power stroke, an exhaust stroke, and two free strokes during which the exhaust valve or a separate clean air valve is left open. The power stroke of each cylinder fires simultaneously with the free stroke of another cylinder. The engine and method of operation provides a six stroke cycle for each power stroke to yield three revolutions of the crankshaft per cycle, thereby increasing fuel efficiency.
    Type: Grant
    Filed: October 20, 2008
    Date of Patent: June 1, 2010
    Inventors: Howard Kelem, Estelle Kelem
  • SIX STROKE INTERNAL COMBUSTION ENGINE AND METHOD OF OPERATION
    Publication number: 20100095913
    Abstract: An internal combustion engine includes an arrangement of cylinders each having a reciprocating piston operatively linked to a crankshaft. The cycle for each cylinder includes an intake stroke, a compression stroke, a power stroke, an exhaust stroke, and two free strokes during which the exhaust valve or a separate clean air valve is left open. The power stroke of each cylinder fires simultaneously with the free stroke of another cylinder. The engine and method of operation provides a six stroke cycle for each power stroke to yield three revolutions of the crankshaft per cycle, thereby increasing fuel efficiency.
    Type: Application
    Filed: October 20, 2008
    Publication date: April 22, 2010
    Inventors: Howard Kelem, Estelle Kelem