Patents by Inventor Douglas J. Adams

Douglas J. Adams 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: 20240093663
    Abstract: A DC power plant generating DC power from a variety of engines including a Stirling cycle engine. The DC power plant includes a relatively small start-up power source that is discontinued after the engine is running. A method for producing DC power for a load including starting up an engine using power supplied by a relatively small power supply supplemented by a capacitor bank, providing output from the engine to a generator, producing alternating current (AC) power by the generator, converting the AC power to direct current (DC) power, disabling output of the DC power during a first set of pre-selected conditions, limiting a rate of change of current of the DC power during a second set of pre-selected conditions, reducing conducted and radiated emissions of the DC power, disconnecting the DC power from the load under a third set of pre-selected conditions, and providing the DC power to the load.
    Type: Application
    Filed: November 20, 2023
    Publication date: March 21, 2024
    Inventors: Andrew A. Schnellinger, James R. Lowell, Bryan A. Finseth, Christopher L. Barber, Jason M. Sachs, Donald J. Lucas, Shannon Prescott, Jeffrey W. Kite, Andras K. Fekete, Douglas R. Adams
  • Patent number: 10938252
    Abstract: A wireless power transmitting device transmits wireless power signals to a wireless power receiving device. To detect foreign objects, the wireless power transmitting device has an array of temperature sensors. The array of temperature sensors may include temperature sensor components such as temperature sensitive thin-film resistors or other temperature sensitive components. A temperature sensor may have thin-film resistors formed on opposing sides of a substrate. The thin-film resistors may be formed from meandered metal traces to reduce eddy current formation during operation of the wireless power transmitting device. Signal paths coupling control circuitry on the wireless power transmitting device to the array of temperature sensors may be configured to extend along columns of the temperature sensors without running along each row of the temperature sensors, thereby reducing eddy currents from loops of signal routing lines.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: March 2, 2021
    Assignee: Apple Inc.
    Inventors: J. Stephen Smith, Siddharth Seth, Douglas J. Adams, Michael A. Cretella
  • Publication number: 20200266672
    Abstract: A wireless power transmitting device transmits wireless power signals to a wireless power receiving device. To detect foreign objects, the wireless power transmitting device has an array of temperature sensors. The array of temperature sensors may include temperature sensor components such as temperature sensitive thin-film resistors or other temperature sensitive components. A temperature sensor may have thin-film resistors formed on opposing sides of a substrate. The thin-film resistors may be formed from meandered metal traces to reduce eddy current formation during operation of the wireless power transmitting device. Signal paths coupling control circuitry on the wireless power transmitting device to the array of temperature sensors may be configured to extend along columns of the temperature sensors without running along each row of the temperature sensors, thereby reducing eddy currents from loops of signal routing lines.
    Type: Application
    Filed: May 7, 2020
    Publication date: August 20, 2020
    Inventors: J. Stephen Smith, Siddharth Seth, Douglas J. Adams, Michael A. Cretella
  • Patent number: 10658878
    Abstract: A wireless power transmitting device transmits wireless power signals to a wireless power receiving device. The wireless power receiving device has a rectifier and a wireless power receiving coil that receives wireless power signals. The wireless power transmitting device uses a layer of coils to transmit the wireless power signals. A dielectric layer in the wireless power transmitting device defines a charging surface that receives the wireless power receiving device. A layer of temperature sensors is interposed between the layer of coils and the dielectric layer. Control circuitry in the wireless power transmitting device uses temperature information from the temperature sensors to determine whether a foreign object such as a coin is present on the charging surface.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: May 19, 2020
    Assignee: Apple Inc.
    Inventors: J. Stephen Smith, Behrooz Shahsavari, Jacob E. Mattingley, Joseph C. Doll, Steven P. Hotelling, Siddharth Seth, Douglas J. Adams, Michael A. Cretella
  • Publication number: 20200076244
    Abstract: A wireless power transmitting device transmits wireless power signals to a wireless power receiving device. The wireless power receiving device has a rectifier and a wireless power receiving coil that receives wireless power signals. The wireless power transmitting device uses a layer of coils to transmit the wireless power signals. A dielectric layer in the wireless power transmitting device defines a charging surface that receives the wireless power receiving device. A layer of temperature sensors is interposed between the layer of coils and the dielectric layer. Control circuitry in the wireless power transmitting device uses temperature information from the temperature sensors to determine whether a foreign object such as a coin is present on the charging surface.
    Type: Application
    Filed: November 30, 2018
    Publication date: March 5, 2020
    Inventors: J. Stephen Smith, Behrooz Shahsavari, Jacob E. Mattingley, Joseph C. Doll, Steven P. Hotelling, Siddharth Seth, Douglas J. Adams, Michael A. Cretella
  • Patent number: 10505403
    Abstract: A wireless power transmitting device transmits wireless power signals to a wireless power receiving device. To detect foreign objects, the wireless power transmitting device has an array of temperature sensors. The array of temperature sensors may include temperature sensor components such as temperature sensitive thin-film resistors or other temperature sensitive components. A temperature sensor may have thin-film resistors formed on opposing sides of a substrate. The thin-film resistors may be formed from meandered metal traces to reduce eddy current formation during operation of the wireless power transmitting device. Signal paths coupling control circuitry on the wireless power transmitting device to the array of temperature sensors may be configured to extend along columns of the temperature sensors without running along each row of the temperature sensors, thereby reducing eddy currents from loops of signal routing lines.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: December 10, 2019
    Assignee: Apple Inc.
    Inventors: J. Stephen Smith, Siddharth Seth, Douglas J. Adams, Michael A. Cretella
  • Patent number: 10231818
    Abstract: Artificial salivary gland devices and assemblies are provided. The present disclosure provides artificial salivary pump/gland devices and assemblies, and related methods of use. One embodiment utilizes the interstitial/marrow fluid reservoir within the underlying mandibular or maxillary bone as a source for replacement saliva. The salivary pump/assembly, which is implantable in the mandibular or maxillary bone as a dental implant and driven by incidental tooth contact and masticatory forces, harvests interstitial/marrow fluid and treats it via semi-permeable membrane technology and soluble particles as a continuously available saliva replacement. Masticatory forces and tooth contact power the pump to both harvest interstitial/marrow fluid and drive flow through a bed of ion-exchange resins and/or soluble particles to adjust fluid chemistry providing a continuously available saliva-like solution.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: March 19, 2019
    Assignee: University of Connecticut
    Inventors: John Robert Kelly, Douglas J. Adams, Martin Allen Freilich
  • Publication number: 20180110608
    Abstract: Artificial salivary gland devices and assemblies are provided. The present disclosure provides artificial salivary pump/gland devices and assemblies, and related methods of use. One embodiment utilizes the interstitial/marrow fluid reservoir within the underlying mandibular or maxillary bone as a source for replacement saliva. The salivary pump/assembly, which is implantable in the mandibular or maxillary bone as a dental implant and driven by incidental tooth contact and masticatory forces, harvests interstitial/marrow fluid and treats it via semi-permeable membrane technology and soluble particles as a continuously available saliva replacement. Masticatory forces and tooth contact power the pump to both harvest interstitial/marrow fluid and drive flow through a bed of ion-exchange resins and/or soluble particles to adjust fluid chemistry providing a continuously available saliva-like solution.
    Type: Application
    Filed: December 12, 2017
    Publication date: April 26, 2018
    Applicant: University of Connecticut
    Inventors: John Robert Kelly, Douglas J. Adams, Martin Allen Freilich
  • Patent number: 9872757
    Abstract: Artificial salivary gland devices and assemblies are provided. The present disclosure provides artificial salivary pump/gland devices and assemblies, and related methods of use. One embodiment utilizes the interstitial/marrow fluid reservoir within the underlying mandibular or maxillary bone as a source for replacement saliva. The salivary pump/assembly, which is implantable in the mandibular or maxillary bone as a dental implant and driven by incidental tooth contact and masticatory forces, harvests interstitial/marrow fluid and treats it via semi-permeable membrane technology and soluble particles as a continuously available saliva replacement. Masticatory forces and tooth contact power the pump to both harvest interstitial/marrow fluid and drive flow through a bed of ion-exchange resins and/or soluble particles to adjust fluid chemistry providing a continuously available saliva-like solution.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: January 23, 2018
    Assignee: University of Connecticut
    Inventors: John Robert Kelly, Douglas J. Adams, Martin Allen Freilich
  • Publication number: 20160278909
    Abstract: Artificial salivary gland devices and assemblies are provided. The present disclosure provides artificial salivary pump/gland devices and assemblies, and related methods of use. One embodiment utilizes the interstitial/marrow fluid reservoir within the underlying mandibular or maxillary bone as a source for replacement saliva. The salivary pump/assembly, which is implantable in the mandibular or maxillary bone as a dental implant and driven by incidental tooth contact and masticatory forces, harvests interstitial/marrow fluid and treats it via semi-permeable membrane technology and soluble particles as a continuously available saliva replacement. Masticatory forces and tooth contact power the pump to both harvest interstitial/marrow fluid and drive flow through a bed of ion-exchange resins and/or soluble particles to adjust fluid chemistry providing a continuously available saliva-like solution.
    Type: Application
    Filed: March 24, 2016
    Publication date: September 29, 2016
    Applicant: University of Connecticut
    Inventors: John Robert Kelly, Douglas J. Adams, Martin Allen Freilich
  • Patent number: D346831
    Type: Grant
    Filed: May 18, 1992
    Date of Patent: May 10, 1994
    Inventor: Douglas J. Adams