Patents by Inventor Howard G. Clark

Howard G. Clark 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: 20160124415
    Abstract: A power control system includes a power reduction module operable to reduce power to a connected load, a switching module operable to selectively transfer power directly to the load or to the power reduction module, a frequency module coupled between a harmonic reduction module and the load, the harmonic reduction module connected to an output of the power reduction module for reducing signal harmonics from power transferred to the frequency module, a controller linked to the switching module and to the frequency module to provide control signals, a resistor coupled between the switching module and the power reduction module, and a resistor voltage monitor coupled between the switching module and the resistor, wherein the resistor voltage monitor measures a voltage across the resistor and sends voltage measurement data to the controller. A method for a power control system to reduce power consumption of a load is also disclosed.
    Type: Application
    Filed: November 3, 2015
    Publication date: May 5, 2016
    Inventor: Howard G. Clark, III
  • Patent number: 7498748
    Abstract: A method and apparatus for providing power in an electrical system is disclosed. The electrical system comprises: a poly-phase electrical source; a plurality of transformers coupled to each other, where each phase of the poly-phase source is coupled to a transformer within the plurality. The electrical system further comprises a plurality of loads, where each load is coupled to a tap point on one of the transformers and where the transformers are capable of being severed at their common connections and coupled to a neutral line.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: March 3, 2009
    Inventor: Howard G. Clark, III
  • Patent number: 7417410
    Abstract: A power control system includes a power reduction module operable to reduce power to a connected load, a switching module operable to selectively transfer power directly to the load or to the power reduction module, a harmonic reduction module connected to an output of the power reduction module for reducing signal harmonics from power transferred to the load, a controller linked to the switching module to provide control signals, a resistor coupled between the switching module and the power reduction module, and a resistor voltage monitor coupled between the switching module and the resistor, wherein the resistor voltage monitor measures a voltage across the resistor and sends voltage measurement data to the controller. A method for a power control system to reduce power consumption of a load is also disclosed.
    Type: Grant
    Filed: November 3, 2005
    Date of Patent: August 26, 2008
    Inventors: Howard G. Clark, III, Howard G. Clark, IV
  • Publication number: 20030227266
    Abstract: A method and apparatus is disclosed to reduce power consumption of a load. In one embodiment a power control system selectively routes power directly to a load or to a power reduction device. A delay may occur prior to introduction of the power reduction device to fully energize the load. The power reduction device may operate in conjunction with signal modification device. The signal modification device modifies the signal provided to the load to achieve desired operation of the load. In one embodiment the power reduction device comprises a step-down transformer and the signal modification device comprises a capacitor. In one embodiment the power reduction device is selected to remove unwanted frequency components from the signal provide to the load. In various other embodiments the power control system may be configured to stagger start the load to minimize the peak draw of the load.
    Type: Application
    Filed: June 7, 2002
    Publication date: December 11, 2003
    Inventors: Howard G. Clark, Larry L. Kinder
  • Patent number: 6657404
    Abstract: A method and apparatus is disclosed to reduce power consumption of a load. In one embodiment a power control system selectively routes power directly to a load or to a power reduction device. A delay may occur prior to introduction of the power reduction device to fully energize the load. The power reduction device may operate in conjunction with signal modification device. The signal modification device modifies the signal provided to the load to achieve desired operation of the load. In one embodiment the power reduction device comprises a step-down transformer and the signal modification device comprises a capacitor. In one embodiment the power reduction device is selected to remove unwanted frequency components from the signal provide to the load. In various other embodiments the power control system may be configured to stagger start the load to minimize the peak draw of the load.
    Type: Grant
    Filed: June 7, 2002
    Date of Patent: December 2, 2003
    Inventors: Howard G. Clark, Larry L. Kinder
  • Patent number: 5527337
    Abstract: A bioabsorbable stent for placement at the locus of a stenotic portion of a body passage, such as a blood vessel, which is flexible and compliant for safe and effective delivery to the site of the stenotic portion of, for example, a blood vessel, and so as to avoid the disadvantages of chronic implantation, such as arterial rupture or aneurism formation while exposed to the continuous stresses of a beating heart. The stent is formed from a bioabsorbable material and is porous or has apertures defined there through to facilitate tissue ingrowth and encapsulation of the stent. The stent is encapsulated and biodegrades or bioabsorbs within a period of days, weeks or months as desired following encapsulation to thereby minimize the likelihood of embolization or other risks of the dissolved material and to avoid the disadvantages of chronic implantation.
    Type: Grant
    Filed: February 22, 1994
    Date of Patent: June 18, 1996
    Assignee: Duke University
    Inventors: Richard S. Stack, Howard G. Clark, William F. Walker, James H. McElhaney