Patents by Inventor Stephen E. Davis

Stephen E. Davis 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).

  • Patent number: 8307642
    Abstract: A motor mounted on a structural support with a pivot at its center line which comprises a cylindrical vessel for holding a fluid in a closed system and in which a buoyant cylinder containing a lighter fluid is allowed to free float so that a continuous chain attached to each end of the buoyant cylinder may be used to transfer energy to a energy storage unit, a crank or a generator. A weighted piston that operates in a pressure tank which force a compressed gas against the piston through pre-sequenced automatic activated valves to force the piston to rise a re determined distance, causing the motor to become top heavy and rotate 180 degrees by gravity and relocks in place to repeat the cycle.
    Type: Grant
    Filed: June 14, 2010
    Date of Patent: November 13, 2012
    Inventor: Stephen E. Davis
  • Publication number: 20100319339
    Abstract: A motor mounted on a structural support with a pivot at its center line which comprises a cylindrical vessel for holding a fluid in a closed system and in which a buoyant cylinder containing a lighter fluid is allowed to free float so that a continuous chain attached to each end of the buoyant cylinder may be used to transfer energy to a energy storage unit, a crank or a generator. A weighted piston that operates in a pressure tank which force a compressed gas against the piston through pre-sequenced automatic activated valves to force the piston to rise a re determined distance, causing the motor to become top heavy and rotate 180 degrees by gravity and relocks in place to repeat the cycle.
    Type: Application
    Filed: June 14, 2010
    Publication date: December 23, 2010
    Inventor: Stephen E. Davis
  • Patent number: 7765804
    Abstract: A motor mounted on a structural support with a pivot at its center line which comprises a cylindrical vessel for holding a fluid in a closed system and in which a buoyant cylinder containing a lighter fluid is allowed to free float so that a cable attached to either end of the buoyant cylinder may be used to transfer energy to a energy storage unit, a crank or a generator. Two moment arms having a weight attached at the exterior end and inside attachably connected to the surface of two drive pistons that operate in pressure tanks which force a compressed gas against the pistons through pre-sequenced automatic activated valves to extend or retract the moment arms at the end of a cycle. The motor then becomes top heavy and rotates 180 degrees by gravity and relocks in place to repeat the cycle.
    Type: Grant
    Filed: June 3, 2008
    Date of Patent: August 3, 2010
    Inventor: Stephen E. Davis
  • Publication number: 20090293471
    Abstract: A motor mounted on a structural support with a pivot at its center line which comprises a cylindrical vessel for holding a fluid in a closed system and in which a buoyant cylinder containing a lighter fluid is allowed to free float so that a cable attached to either end of the buoyant cylinder may be used to transfer energy to a energy storage unit, a crank or a generator. Two moment arms having a weight attached at the exterior end and inside attachably connected to the surface of two drive pistons that operate in pressure tanks which force a compressed gas against the pistons through pre-sequenced automatic activated valves to extend or retract the moment arms at the end of a cycle. The motor then becomes top heavy and rotates 180 degrees by gravity and relocks in place to repeat the cycle.
    Type: Application
    Filed: June 3, 2008
    Publication date: December 3, 2009
    Inventor: Stephen E. Davis
  • Patent number: 5675594
    Abstract: A laser system includes an apparatus having a primary laser resonator having a laser medium therein for producing a laser beam of a first wavelength and a second laser resonator optically connected to the primary resonator to allow a portion of the laser energy from the primary laser resonator to pass into the secondary laser resonator. An optical parametric oscillator is located intracavity of the secondary laser resonator and includes a nonlinear crystal for producing a laser beam of a second wavelength therefrom. A coherent beam output is coupled to the optical parametric oscillator for producing an output beam of predetermined wavelength of the second wavelength while blocking the output of the laser beam of the first wavelength so that a dual resonator combines a secondary laser cavity and an optical parametric oscillator to produce a predetermined output wavelength.
    Type: Grant
    Filed: July 9, 1996
    Date of Patent: October 7, 1997
    Assignee: Litton Systems, Inc.
    Inventors: Floyd E. Hovis, Stephen E. Davis, Bart A. Shepherd, Walter R. Sanders, Ronald R. Selleck
  • Patent number: 5608744
    Abstract: A laser system includes an apparatus and method having a primary laser resonator having a laser medium therein for producing a laser beam of a first wavelength and a second laser resonator optically connected to the primary resonator to allow a portion of the laser energy from the primary laser resonator to pass into the secondary laser resonator. An optical parametric oscillator is located intracavity of the secondary laser resonator and includes a non-linear crystal for producing a laser beam of a second wavelength therefrom. A coherent beam output is coupled to the optical parametric oscillator for producing an output beam of predetermined wavelength of the second wavelength while blocking the output of the laser beam of the first wavelength so that a dual resonator combines a secondary laser cavity and an optical parametric oscillator to produce a predetermined output wavelength.
    Type: Grant
    Filed: March 31, 1995
    Date of Patent: March 4, 1997
    Assignee: Litton Systems, Inc.
    Inventors: Floyd E. Hovis, Stephen E. Davis, Bart A. Shepherd, Walter R. Sanders, Ronald R. Selleck
  • Patent number: 5383060
    Abstract: A laser telescope is provided for reducing undesired laser thermal lensing effects which would otherwise impair the intensity and quality of a laser beam passing therethrough. An outer barrel is mounted in a chamber within a housing by ball bearings which hold the outer barrel longitudinally fixed but permits rotation of the outer barrel about its longitudinal axis. An inner barrel is coaxially situated within the outer barrel and includes a threaded outer surface which is threaded into a threaded inner surface of the outer barrel. A first lens is mounted adjacent one end of the chamber and a second lens is mounted in the inner barrel. A laser beam is directed through the laser telescope along the common axis of the chamber, the outer barrel, and the inner barrel. The lens spacing in the barrels is sensed and actuates a drive motor in proportion to the error between the sensed lens spacing and the desired lens spacing.
    Type: Grant
    Filed: November 20, 1992
    Date of Patent: January 17, 1995
    Assignee: Litton Systems, Inc.
    Inventor: Stephen E. Davis