Patents by Inventor Kenneth Murray Smith

Kenneth Murray Smith 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).

  • Rotary piston steam engine with rotary variable inlet-cut-off valve
    Patent number: 8784086
    Abstract: Rotary piston steam engine with equal double rotary pistons is provided with a balanced rotary variable inlet cut-off valve for enhanced efficiency. The exhaust steam from the primary expansion is routed to secondary expansion avoiding back pressure for additional efficiency. The rotary valve has balanced dual inputs and outputs on opposite sides. The exhaust steam from the primary expansion is taken off when the trailing face of the rotary piston passes the inlet port of the expansion chamber housing, the exhaust outlet secondary expansion being placed approximately 180 degrees from the primary expansion inlet in the curved portion of the expansion chamber housing wherein back pressure is not imparted to the primary expansion.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: July 22, 2014
    Inventors: Errol John Smith, Kenneth Murray Smith
  • ROTARY PISTON STEAM ENGINE WITH BALANCED ROTARY VARIABLE INLET-CUT- OFF VALVE AND SECONDARY EXPANSION WITHOUT BACK-PRESSURE ON PRIMARY EXPANSION
    Publication number: 20120039733
    Abstract: Rotary piston steam engine with equal double rotary pistons is provided with a balanced rotary variable inlet cut-off valve for enhanced efficiency. The exhaust steam from the primary expansion is routed to secondary expansion avoiding back pressure for additional efficiency. The rotary valve has balanced dual inputs and outputs on opposite sides. The exhaust steam from the primary expansion is taken off when the trailing face of the rotary piston passes the inlet port of the expansion chamber housing, the exhaust outlet secondary expansion being placed approximately 180 degrees from the primary expansion inlet in the curved portion of the expansion chamber housing wherein back pressure is not imparted to the primary expansion.
    Type: Application
    Filed: June 8, 2010
    Publication date: February 16, 2012
    Inventors: Errol John Smith, Kenneth Murray Smith