Patents by Inventor Stephen M. Flessner

Stephen M. Flessner 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).

  • Publication number: 20080115744
    Abstract: A hydrogen fuel system for an internal combustion engine includes an electrolyzer for generating hydrogen and oxygen gases. The engine exhaust may be recycled through the electrolyzer where it is converted to hydrogen and oxygen. A water reservoir in fluid communication with the electrolyzer maintains the water level in the electrolyzer. The hydrogen and oxygen generated by the electrolyzer may be routed to the internal combustion engine and provide the fuel for the engine. Hydrogen and oxygen not consumed by operation of the engine is stored in separate pressurized storage tanks. Expanders lower the pressure of pressurized hydrogen and oxygen for use to power the engine and provide electric power to the electrolyzer.
    Type: Application
    Filed: September 24, 2007
    Publication date: May 22, 2008
    Inventors: STEPHEN M. FLESSNER, Eric S. Flessner
  • Patent number: 7273044
    Abstract: A hydrogen fuel system for an internal combustion engine includes an electrolyzer for generating hydrogen and oxygen gases. The engine exhaust may be recycled through the electrolyer where it is converted to hydrogen and oxygen. A water reservoir in fluid communication with the electrolyzer maintains the water level in the elctrolyzer. The hydrogen and oxygen generated by the electrolyzer may be routed to the internal combustion engine and provide the fuel for the engine. Hydrogen and oxygen not consumed by operation of the engine is stored in separate pressurized storage tanks. Expanders lower the pressure of pressurized hydrogen and oxygen for use to power the engine and provide electric power to the electrolyzer.
    Type: Grant
    Filed: September 27, 2004
    Date of Patent: September 25, 2007
    Inventors: Stephen M. Flessner, Eric S. Flessner
  • Patent number: 5987912
    Abstract: A refrigeration apparatus comprises a chilling compartment within a housing enclosing the chilling compartment and a refrigeration system for directing cold air into the chilling compartment. Cold air enters the chilling compartment through a plurality of inlet nozzles located in the walls of the compartment housing. A chilled air manifold connects the inlet nozzles to the refrigeration system. A control circuit includes an air temperature controller for selectively setting the air temperature. A timer and on/off controls are incorporated in the control circuit. A moisture sensor monitors the moisture of the chilled air flowing into the chilling compartment and terminates air flow into the compartment when the moisture in the air exceeds a predetermined level. The moisture on the drier bed is removed during a regeneration cycle, which directs hot air flow through a drier for reducing the water content to an acceptable level on the drier bed contents.
    Type: Grant
    Filed: October 26, 1998
    Date of Patent: November 23, 1999
    Inventor: Stephen M. Flessner