Patents by Inventor David E. Sharp

David E. Sharp 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: 11616364
    Abstract: An electrical load system includes one or more electrical loads, a power transfer switch, and an electronic control system. The power transfer switch is coupled with and can provide power to one or more electrical loads from a first power source or a second power source. The electronic control system evaluates a source impedance of the first source and controls the power transfer switch in response to the source impedance of the first source indicating a fault condition of the first power source that would interrupt power from the first power source to the one or more electrical loads prior to the fault condition disrupting power from the first power source to the one or more electrical loads.
    Type: Grant
    Filed: February 12, 2021
    Date of Patent: March 28, 2023
    Assignee: ABB SCHWEIZ AG
    Inventor: David E. Sharpe
  • Publication number: 20220263314
    Abstract: An electrical load system includes one or more electrical loads, a power transfer switch, and an electronic control system. The power transfer switch is coupled with and can provide power to one or more electrical loads from a first power source or a second power source. The electronic control system evaluates a source impedance of the first source and controls the power transfer switch in response to the source impedance of the first source indicating a fault condition of the first power source that would interrupt power from the first power source to the one or more electrical loads prior to the fault condition disrupting power from the first power source to the one or more electrical loads.
    Type: Application
    Filed: February 12, 2021
    Publication date: August 18, 2022
    Inventor: David E. Sharpe
  • Patent number: 7185659
    Abstract: Thermal cleaning of an electrically heated smoking device, and in particular the removal of condensates formed within the smoking device as a result of extended periods of use, is achieved with a cleaning system that utilizes inductive heating that provides efficient and intense localized heating in the cleaning process. The thermal power of the inductive heating process is increased or the power necessary to activate the inductive heating process is decreased by the addition of a magnetic shell by itself or in combination with a magnetic pin.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: March 6, 2007
    Assignee: Philip Morris USA Inc.
    Inventor: David E. Sharpe
  • Patent number: 6810883
    Abstract: An electrically heated cigarette smoking device includes a heater unit, heater blades for applying heat to portions of a cigarette that is supported within the heater unit, the heater unit having an opening adapted to receive an end of a cigarette and adapted to position the end of the cigarette in proximity to the heater blades, and the heater unit defining at least part of a suction flow passage through which ambient air is drawn into contact with the cigarette when a smoker draws on the cigarette positioned in the heater unit. The heater unit is mounted within a partition that positions the heater unit relative to the housing and at least partially defines a bypass flow passage in fluid communication with ambient air surrounding the housing, the partition further defining a flow diverting passage leading from the bypass flow passage to the suction flow passage and through which ambient air is drawn from the bypass flow passage when a smoker puffs on a cigarette inserted in the heater unit opening.
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: November 2, 2004
    Assignee: Philip Morris USA Inc.
    Inventors: John Louis Felter, Robert E. Lee, Ashok Solanky, Clint Blake, Pamela Davis, David E. Sharpe, Mark E. Watson, Robert L. Ripley, Brett W. Stevenson, William J. Crowe
  • Publication number: 20040200488
    Abstract: An electrically heated cigarette smoking device includes a heater unit, heater blades for applying heat to portions of a cigarette that is supported within the heater unit, the heater unit having an opening adapted to receive an end of a cigarette and adapted to position the end of the cigarette in proximity to the heater blades, and the heater unit defining at least part of a suction flow passage through which ambient air is drawn into contact with the cigarette when a smoker draws on the cigarette positioned in the heater unit. The heater unit is mounted within a partition that positions the heater unit relative to the housing and at least partially defines a bypass flow passage in fluid communication with ambient air surrounding the housing, the partition further defining a flow diverting passage leading from the bypass flow passage to the suction flow passage and through which ambient air is drawn from the bypass flow passage when a smoker puffs on a cigarette inserted in the heater unit opening.
    Type: Application
    Filed: May 4, 2004
    Publication date: October 14, 2004
    Applicant: PHILIP MORRIS USA, INC.
    Inventors: John Louis Felter, Robert E. Lee, Ashok Solanky, Clint Blake, Pamela Davis, David E. Sharpe, Mark E. Watson, Robert L. Ripley
  • Patent number: 6803550
    Abstract: Inductive heating elements are provided with a specific configuration that results in a thermal wave that moves along a smoking device during a cleaning process, and control circuitry that maintains resonant conditions for maximum efficiency and power transfer during the thermal cleaning of the smoking device. A secondary can is positioned around electrical heater blades that contact the cigarette, and is configured to by preferentially heated by the induction of current within the can for the removal of condensates formed within the smoking device through extended periods of use.
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: October 12, 2004
    Assignee: Philip Morris USA Inc.
    Inventors: David E Sharpe, Douglas A Burton, Patrick H. Hayes, Jimmy Crowe, Constance H. Morgan, John M. Adams
  • Publication number: 20040149297
    Abstract: Thermal cleaning of an electrically heated smoking device, and in particular the removal of condensates formed within the smoking device as a result of extended periods of use, is achieved with a cleaning system that utilizes inductive heating that provides efficient and intense localized heating in the cleaning process. The thermal power of the inductive heating process is increased or the power necessary to activate the inductive heating process is decreased by the addition of a magnetic shell by itself or in combination with a magnetic pin.
    Type: Application
    Filed: January 31, 2003
    Publication date: August 5, 2004
    Inventor: David E. Sharpe
  • Publication number: 20040149737
    Abstract: Inductive heating elements are provided with a specific configuration that results in a thermal wave that moves along a smoking device during a cleaning process, and control circuitry that maintains resonant conditions for maximum efficiency and power transfer during the thermal cleaning of the smoking device. A secondary can is positioned around electrical heater blades that contact the cigarette, and is configured to be preferentially heated by the induction of current within the can for the removal of condensates formed within the smoking device through extended periods of use.
    Type: Application
    Filed: January 30, 2003
    Publication date: August 5, 2004
    Inventors: David E. Sharpe, Douglas A. Burton, Patrick H. Hayes, Jimmy Crowe, Constance H. Morgan, John M. Adams
  • Publication number: 20040089314
    Abstract: An electrically heated cigarette smoking device includes a heater unit, heater blades for applying heat to portions of a cigarette that is supported within the heater unit, the heater unit having an opening adapted to receive an end of a cigarette and adapted to position the end of the cigarette in proximity to the heater blades, and the heater unit defining at least part of a suction flow passage through which ambient air is drawn into contact with the cigarette when a smoker draws on the cigarette positioned in the heater unit. The heater unit is mounted within a partition that positions the heater unit relative to the housing and at least partially defines a bypass flow passage in fluid communication with ambient air surrounding the housing, the partition further defining a flow diverting passage leading from the bypass flow passage to the suction flow passage and through which ambient air is drawn from the bypass flow passage when a smoker puffs on a cigarette inserted in the heater unit opening.
    Type: Application
    Filed: November 8, 2002
    Publication date: May 13, 2004
    Inventors: John Louis Felter, Robert E. Lee, Ashok Solanky, Clint Blake, Pamela Davis, David E. Sharpe, Mark E. Watson, Robert L. Ripley, Brett W. Stevenson, William J. Crowe
  • Patent number: 6681998
    Abstract: An aerosol generator includes an induction heating arrangement to vaporize fluid contained in a fluid passage. The vapor is then expelled from the fluid passage into the air creating a mist that forms the aerosol. The aerosol generator includes an excitation coil that inductively heats a heating element which transfers heat to the fluid in the fluid passage. The fluid passage can be located in a metal tube which can be removably mounted in the aerosol generator.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: January 27, 2004
    Assignee: Chrysalis Technologies Incorporated
    Inventors: David E. Sharpe, John L. Felter
  • Publication number: 20020078956
    Abstract: An aerosol generator includes an induction heating arrangement to vaporize fluid contained in a fluid passage. The vapor is then expelled from the fluid passage into the air creating a mist that forms the aerosol. The aerosol generator includes an excitation coil that inductively heats a heating element which transfers heat to the fluid in the fluid passage. The fluid passage can be located in a metal tube which can be removably mounted in the aerosol generator.
    Type: Application
    Filed: December 22, 2000
    Publication date: June 27, 2002
    Inventors: David E. Sharpe, John L. Felter
  • Patent number: 6040560
    Abstract: A novel controller in an electrical smoking system and method, wherein the method includes the steps of: establishing a preferred thermal pathway to be executed with each heater activation responsively to a puff on an electrically heated cigarette; configuring a power cycle in accordance with the desired thermal pathway; dividing the power cycle into at least first and second phases each having a respective, predetermined time period and total energy input for each phase; and adjusting a respective duty cycle (or other power-adjusting factor) in each phase of the power cycle responsively to a voltage reading of the power source such that the established, respective total energy input of each phase is achieved during the time period of each power cycle.
    Type: Grant
    Filed: October 16, 1997
    Date of Patent: March 21, 2000
    Assignee: Philip Morris Incorporated
    Inventors: Grier S. Fleischhauer, Charles T. Higgins, D. Bruce Losee, J. Robert Nelson, Jr., Robert L. Ripley, Masato Sano, David E. Sharpe, Michael L. Watkins
  • Patent number: 5613505
    Abstract: An induction heating source is provided for use with an electrical smoking article. The induction heating source provides an alternating electromagnetic field which inductively heats a susceptor in thermal proximity with tobacco flavor medium to generate aerosols. A plurality of induction heaters are employed and/or the tobacco flavor medium is translated with respect to the induction heater or susceptor. The tobacco flavor medium can form an intimate structure with the susceptor and can take the form of a cylindrical cigarette or a web.
    Type: Grant
    Filed: April 8, 1994
    Date of Patent: March 25, 1997
    Assignee: Philip Morris Incorporated
    Inventors: John M. Campbell, Grier S. Fleischhauer, Charles T. Higgins, Robert L. Ripley, David E. Sharpe, Michael L. Watkins, Susan E. Wrenn
  • Patent number: 5591368
    Abstract: A provided heater comprises a supporting hub and a plurality of electrically resistive heater blades defining a receptacle to receive an inserted cigarette. Each blade comprises a first heater blade leg having a first end and a second end and extending at the first end from the supporting hub, a second heater blade leg having a first end and a second end, and a connecting section connecting the second end of the first leg and the first end of the second leg. The second end of the second leg extends toward the supporting hub and is electrically insulated therefrom. A resistive heating circuit is formed to heat the electrically resistive heater blade which in turn heats the inserted cigarette. The first and second legs are separated by a gap to permit entrainment of flavor substances into the heated cigarette upon drawing by a smoker.
    Type: Grant
    Filed: April 20, 1995
    Date of Patent: January 7, 1997
    Assignee: Philip Morris Incorporated
    Inventors: Grier S. Fleischhauer, Patrick H. Hayes, Constance H. Morgan, Mohammad R. Hajaligol, Michael L. Watkins, Walter A. Nichols, David E. Sharpe, Mary E. Counts
  • Patent number: 5266883
    Abstract: An ionization detector dynamic calibration monitor that regulates the high voltage power supply to the detector. In a preferred embodiment, a voltage boost current source provides an input voltage for a power out voltage regulator and for a +14.75 volt board regulator. The board regulator provides a voltage reference for various circuitry, and provides a voltage reference for coarse calibration and display calibration adjustment circuitry. The power voltage regulator provides the high voltage power supply drive signal. An error amplifier drives an integrator, which, in turn, drives a bargraph display. An optically-isolated output circuit drives an external alarm or relay. In an alternative embodiment, the pulse width of a detected circuit is linearized and converted to an analog control signal. The analog control signal drives conventional power supply control circuitry.
    Type: Grant
    Filed: August 4, 1992
    Date of Patent: November 30, 1993
    Assignee: Philip Morris Incorporated
    Inventor: David E. Sharpe
  • Patent number: 5151648
    Abstract: A scintillation tube dynamic calibration monitor that regulates the high voltage power supply to a detector. In a preferred embodiment, a voltage boost current source provides an input voltage for a power out voltage regulator and for a +14.75 volt board regulator. The board regulator provides a voltage reference for various circuitry, and provides a voltage reference for coarse calibration and display calibration adjustment circuitry. The power voltage regulator provides the high voltage power supply drive signal. An error amplifier drives an integrator, which, in turn, drives a bargraph display. An optically-isolated output circuit drives an external alarm or relay. In an alternative embodiment, the pulse width of a detected circuit is linearized and converted to an analog control signal. The analog control signal drives conventional power supply control circuitry.
    Type: Grant
    Filed: July 23, 1990
    Date of Patent: September 29, 1992
    Assignee: Philip Morris Inc.
    Inventor: David E. Sharpe
  • Patent number: 4838861
    Abstract: The storage of blood and the prevention of coagulation are effected by diluting freshly drawn blood with either isotonic saline or isotonic saline including preservatives and subtherapeutic amounts of heparin. The present method of storing blood is especially useful for autotransfusion and storage of blood for subsequent fractionation or analysis of aliquots thereof.
    Type: Grant
    Filed: May 2, 1986
    Date of Patent: June 13, 1989
    Inventor: David E. Sharp
  • Patent number: 4300337
    Abstract: A rake for attachment to a tractor and operation by the tractor hydraulic system. Rake tines are carried on an endless chain by pivotally mounted brackets along upper and lower runs with counterbalance means providing pivotal movement of the tines between folded and extended positions while traveling along the upper and lower runs, respectively. The rake may be moved to extend laterally outward from the tractor for raking between trees, and the like. The mounting and guide means for the chain and teeth-carrying brackets provide a sturdy and efficient raking action while avoiding clogging as brush is removed.
    Type: Grant
    Filed: March 10, 1980
    Date of Patent: November 17, 1981
    Inventor: David E. Sharp
  • Patent number: 4102376
    Abstract: A receptacle for hand-picked fruit which is susceptible to damage by crushing or bruising. A conventional picking bag or bucket is provided with a removable liner which is preferably formed from a single, flat sheet of a closed-cell foam plastic material. The liner is bent to conform to the cylindrical configuration of the picking bag or bucket wherein it is inserted, and does not interfere with use in the normal manner of canvas picking bags which are adapted for fruit discharge through the bottom.
    Type: Grant
    Filed: July 15, 1977
    Date of Patent: July 25, 1978
    Inventor: David E. Sharp
  • Patent number: 3962821
    Abstract: Pollen is dispensed from a container through openings in a wall portion thereof by attaching the container to the end of a member which is manually movable by means of a handle at the end opposite the container. The member contacts a stop when moving in one direction, thereby agitating the pollen within the container so that it falls through the openings which are downwardly disposed when the handle is grasped.
    Type: Grant
    Filed: July 24, 1975
    Date of Patent: June 15, 1976
    Inventor: David E. Sharp