Patents by Inventor David N. Shaw

David N. Shaw 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: 10771908
    Abstract: Systems, methods, and non-transitory computer-readable storage media for performing a role swapping operation between a pair of non-tethered wireless ear buds after detecting a triggering event. Further, state information can be coordinated between devices, including in connection with performing a role swap between buds in a pair of wireless, untethered ear buds, where one wireless ear bud is in a primary role and is responsible for a connection with a companion device, and another wireless ear bud in the pair is in a secondary role.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: September 8, 2020
    Assignee: Apple Inc.
    Inventors: Sriram Hariharan, Ganesha Adkasthala Ganapathi Batta, Tad J. Dreier, Christopher S. Wiebe, Ashley N. Saulsbury, Duy N. Phan, David J. Shaw, Robert D. Watson, Augustin Prats
  • Publication number: 20200128378
    Abstract: Methods for aggregating Bluetooth profiles for faster connection and configuration are disclosed, including transmitting, subsequent to establishing a connection, a request message to a peer device that indicates support of a fast connection protocol for Bluetooth profiles configuration and receiving a response message from the peer device that indicates the peer device supports the fast connection protocol. After pairing with the peer device, a first list of profile descriptors for a plurality of Bluetooth profiles supported by the device may be transmitted to the peer device and a second list of profile descriptors for a plurality of Bluetooth profiles supported by the peer device may be received. A configuration of a plurality of Bluetooth profiles base, at least in part, on a comparison of the first list of profile descriptors to the second list of profile descriptors may be determined and transmitted to the peer device.
    Type: Application
    Filed: December 18, 2019
    Publication date: April 23, 2020
    Inventors: Akshay Mangalam Srivatsa, Ariane Cotte, Craig P. Dooley, Duy N. Phan, Ganesha Adkasthala Ganapathi Batta, Hyundoo Shin, Kang Sun, Matt I. Gillette, Michael Jason Giles, Robert D. Watson, Sean P. Wilson, Sriram Hariharan, Sujatha Viswanathan, Todd Wheeler, Yilok L. Wong, David John Shaw, Sarang S. Ranade
  • Patent number: 10542405
    Abstract: Methods for aggregating Bluetooth profiles for faster connection and configuration are disclosed, including transmitting, subsequent to establishing a connection, a request message to a peer device that indicates support of a fast connection protocol for Bluetooth profiles configuration and receiving a response message from the peer device that indicates the peer device supports the fast connection protocol. After pairing with the peer device, a first list of profile descriptors for a plurality of Bluetooth profiles supported by the device may be transmitted to the peer device and a second list of profile descriptors for a plurality of Bluetooth profiles supported by the peer device may be received. A configuration of a plurality of Bluetooth profiles base, at least in part, on a comparison of the first list of profile descriptors to the second list of profile descriptors may be determined and transmitted to the peer device.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: January 21, 2020
    Assignee: Apple Inc.
    Inventors: Akshay Mangalam Srivatsa, Ariane Cotte, Craig P. Dooley, Duy N. Phan, Ganesha Adkasthala Ganapathi Batta, Hyundoo Shin, Kang Sun, Matt I. Gillette, Michael Jason Giles, Robert D. Watson, Sean P. Wilson, Sriram Hariharan, Sujatha Viswanathan, Todd Wheeler, Yilok L. Wong, David John Shaw, Sarang S. Ranade
  • Publication number: 20190373430
    Abstract: Methods for aggregating Bluetooth profiles for faster connection and configuration are disclosed, including transmitting, subsequent to establishing a connection, a request message to a peer device that indicates support of a fast connection protocol for Bluetooth profiles configuration and receiving a response message from the peer device that indicates the peer device supports the fast connection protocol. After pairing with the peer device, a first list of profile descriptors for a plurality of Bluetooth profiles supported by the device may be transmitted to the peer device and a second list of profile descriptors for a plurality of Bluetooth profiles supported by the peer device may be received. A configuration of a plurality of Bluetooth profiles base, at least in part, on a comparison of the first list of profile descriptors to the second list of profile descriptors may be determined and transmitted to the peer device.
    Type: Application
    Filed: January 7, 2019
    Publication date: December 5, 2019
    Inventors: Akshay Mangalam Srivatsa, Ariane Cotte, Craig P. Dooley, Duy N. Phan, Ganesha Adkasthala Ganapathi Batta, Hyundoo Shin, Kang Sun, Matt I. Gillette, Michael Jason Giles, Robert D. Watson, Sean P. Wilson, Sriram Hariharan, Sujatha Viswanathan, Todd Wheeler, Yilok L. Wong, David John Shaw, Sarang S. Ranade
  • Patent number: 10323007
    Abstract: Described herein are quinazoline-based compounds and formulations thereof. In some embodiments, the compounds and/or formulations thereof can be effective to inhibit and/or kill A. baumannii. Also described herein are methods of treating a subject in need thereof by administering to the subject in need thereof a quinazoline-based compound and/or formulation thereof to the subject in need thereof.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: June 18, 2019
    Assignee: University of South Florida
    Inventors: Roman Manetsch, Kurt S. Van Horn, Whittney Burda, Lindsey N. Shaw, Renee Fleeman, Megan Barber, David Lawrence Flanigan
  • Patent number: 8075283
    Abstract: A compressor system includes a first compressor, which has a first low side oil sump, in a first shell and a second compressor, which has a second low side oil sump, in a second shell. The first and second compressors are connected in series. There is an oil transfer conduit connected between the first low side sump of the first compressor and the second low side sump of the second compressor. The system also includes a normally open check valve in the oil transfer conduit. Additionally, a bleed is provided to effect oil transfer via the oil transfer conduit when the normally open valve is closed.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: December 13, 2011
    Assignee: Hallowell International, LLC
    Inventor: David N. Shaw
  • Patent number: 7980836
    Abstract: A multi-rotor compressor and method of manufacturing is provided. The compressor includes a housing with a plurality of identical planet rotors. The planet rotors are equally spaced apart at a fixed distance from a centerline. A single sun rotor is provided that is disposed to cooperate with the plurality of identical planet rotors in the compression of gas. The number and radial spacing of the plurality of identical planet rotors about said single sun rotor may be arranged in different configurations to change an output capacity parameter for said compressor.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: July 19, 2011
    Inventor: David N. Shaw
  • Publication number: 20100229575
    Abstract: A system and method for defrosting an air source heat pump are presented. A defrost conduit extends from the discharge from a system compressor to the outdoor coil. The defrost conduit includes a normally closed defrost valve. When the need for defrost exists, the defrost valve is opened, and warm refrigerant is delivered from the compressor discharge to the outdoor coil to effect defrost of the outdoor coil.
    Type: Application
    Filed: March 10, 2009
    Publication date: September 16, 2010
    Applicants: SHAW ENGINEERING ASSOCIATES, LLC, HALLOWELL INTERNATIONAL, LLC
    Inventor: David N. Shaw
  • Patent number: 7651322
    Abstract: A compressor system includes a first compressor, which has a first low side oil sump, in a first shell and a second compressor, which has a second low side oil sump, in a second shell. The first and second compressors are connected in series. There is an oil transfer conduit connected between the first low side sump of the first compressor and the second low side sump of the second compressor. The system also includes a normally open check valve in the oil transfer conduit. A method for effecting oil balance in a compressor system, the method includes establishing a first compressor in a first shell having a first low side oil sump and establishing a second compressor in a second shell having a second low side oil sump. The first and second compressors are connected in series. The method also includes positioning an oil transfer conduit between the first low side sump and the second low side sump and positioning a normally open check valve in the oil transfer conduit.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: January 26, 2010
    Assignee: Hallowell International, LLC
    Inventor: David N. Shaw
  • Publication number: 20090304538
    Abstract: A multi-rotor compressor and method of manufacturing is provided. The compressor includes a housing with a plurality of identical planet rotors. The planet rotors are equally spaced apart at a fixed distance from a centerline. A single sun rotor is provided that is disposed to cooperate with the plurality of identical planet rotors in the compression of gas. The number and radial spacing of the plurality of identical planet rotors about said single sun rotor may be arranged in different configurations to change an output capacity parameter for said compressor.
    Type: Application
    Filed: June 6, 2008
    Publication date: December 10, 2009
    Inventor: David N. Shaw
  • Publication number: 20080283133
    Abstract: A compressor system includes a first compressor, which has a first low side oil sump, in a first shell and a second compressor, which has a second low side oil sump, in a second shell. The first and second compressors are connected in series. There is an oil transfer conduit connected between the first low side sump of the first compressor and the second low side sump of the second compressor. The system also includes a normally open check valve in the oil transfer conduit. A method for effecting oil balance in a compressor system, the method includes establishing a first compressor in a first shell having a first low side oil sump and establishing a second compressor in a second shell having a second low side oil sump. The first and second compressors are connected in series. The method also includes positioning an oil transfer conduit between the first low side sump and the second low side sump and positioning a normally open check valve in the oil transfer conduit.
    Type: Application
    Filed: June 20, 2008
    Publication date: November 20, 2008
    Applicant: HALLOWELL INTERNATIONAL, LLC
    Inventor: David N. Shaw
  • Publication number: 20080173034
    Abstract: A heat pump system and method is presented having a primary compressor, a booster compressor, an economizer, a microprocessor, an air temperature sensor, and a temperature sensor for sensing a temperature commensurate with the boiling temperature of refrigerant in the outside coil. The microprocessor effects controlled operation of the primary compressor, the booster compressor and the economizer when a thermostat calls for heat and in accordance with predetermined ranges of air temperature. The microprocessor calculates a defrost trigger temperature, and defrost operation is initiated when the sensed refrigerant boiling temperature is lower than the trigger temperature for a period of time.
    Type: Application
    Filed: January 19, 2007
    Publication date: July 24, 2008
    Applicant: HALLOWELL INTERNATIONAL, LLC
    Inventor: David N. Shaw
  • Patent number: 6931871
    Abstract: A heat pump system is presented having a primary compressor, a booster compressor, a multi-step thermostat, an indoor coil, an outdoor coil, a refrigerant flow conduit connecting these elements is a closed loop system, and at least one pressure sensor positioned to always sense the refrigerant system low side pressure, which is commensurate with outdoor ambient air temperature in all heating modes of operation. The pressure sensor functions as an override and safety control to prevent or permit operation of the compressors, and also other system components, depending on outside air temperature. The primary compressor is preferably a multi-capacity compressor. A defrost energy transfer fluid is used in a defrost cycle.
    Type: Grant
    Filed: August 27, 2003
    Date of Patent: August 23, 2005
    Assignee: Shaw Engineering Associates, LLC
    Inventors: David N. Shaw, David S. Fishman
  • Patent number: 6276148
    Abstract: A boosted source heat pump (BSHP) is presented having a primary compressor, a booster compressor, an economizer, and a lubricant management system. At least the primary compressor is a twin-single compressor. The lubricant management system includes traps to prevent migration of lubricant to a non-operating compressor, and aspiration tubes from the sump to the low pressure intake zone to each compressor.
    Type: Grant
    Filed: February 16, 2000
    Date of Patent: August 21, 2001
    Inventor: David N. Shaw
  • Patent number: 6217304
    Abstract: A compressor in accordance with the present invention includes a male rotor which is axially aligned with and in communication with two female rotors. The male rotor is driven by a motor, in other words the male rotor is the drive rotor. The male rotor has a plurality of lobes which intermesh with a plurality of flutes on each of the female rotors. The male rotor comprises an inner cylindrical metal shaft with an outer composite material ring mounted thereon. The ring includes the lobes of the male rotor integrally depending therefrom. The lobes of the male rotor being comprised of a composite material allows positioning of the female rotors at a small clearance from the male drive rotor. This clearance is small enough that the liquid refrigerant itself provides sufficient sealing, cooling and lubrication. The positioning of the female rotors on opposing sides of the male rotor balances the radial loading on the male rotor thereby minimizing radial bearing loads.
    Type: Grant
    Filed: August 27, 1999
    Date of Patent: April 17, 2001
    Inventor: David N. Shaw
  • Patent number: 6186758
    Abstract: A compressor in accordance with the present invention includes a male rotor which is axially aligned with and in communication with two female rotors. The compressor includes a housing and a thrust balance configuration. The thrust balance configuration includes a thrust balance disc mounted to a male rotor shaft in a discharge housing of the compressor. The thrust balance disc is exposed to fluid from the compressor at high pressure. The outside diameter of the thrust balance is sized to provide sufficient area to react thrust loads produced by the first rotor. The thrust balance configuration serves to balance the thrust loads imparted on the male rotor and allows for full axial discharge porting.
    Type: Grant
    Filed: February 13, 1998
    Date of Patent: February 13, 2001
    Inventor: David N. Shaw
  • Patent number: 6141980
    Abstract: A system for controlling the amount of foam ingested to a compressor of a cooling system is presented. The present invention utilizes a heated thermistor to control an electrically positioned expansion valve feeding liquid refrigerant to a system evaporator. The thermistor is controlled to be a few degrees warmer than the discharge saturation temperature of the refrigerant exiting the compressor. The saturation temperature corresponding to the compressor discharge pressure is calculated by a microprocessor and compared to the thermistor temperature. If the difference is greater or less than desired, the microprocessor will send the proper signals to the electrically positioned expansion valve thereby controlling the rate of foam ingested by the compressor.
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: November 7, 2000
    Inventor: David N. Shaw
  • Patent number: 6105378
    Abstract: A helical-screw rotary compressor having a twin rotor configuration or a multi-rotor (i.e., at least three) configuration with defined compressor induction and discharge ends has at least one unloader piston disposed at said compressor discharge end.
    Type: Grant
    Filed: September 14, 1998
    Date of Patent: August 22, 2000
    Inventor: David N. Shaw
  • Patent number: 6093007
    Abstract: A compressor in accordance with the present invention includes a male rotor which is axially aligned with and in communication with two female rotors. The compressor includes a housing and a thrust balance configuration. The thrust balance configuration includes a stepped up portion mounted at the suction end of the male rotor and is exposed to fluid from the compressor at high pressure. The outside diameter of the thrust balance configuration is generally less than the crest diameter of the male rotor and sized to provide sufficient area to react thrust loads produced by the first rotor. The thrust balance configuration serves to balance the thrust loads imparted on the male rotor and allows for full axial discharge porting.
    Type: Grant
    Filed: January 13, 1998
    Date of Patent: July 25, 2000
    Inventor: David N. Shaw
  • Patent number: RE39625
    Abstract: A boosted source heat pump (BSHP) is presented having a primary compressor, a booster compressor, an economizer, and a lubricant management system. At least the primary compressor is a twin-single compressor. The lubricant management system includes traps to prevent migration of lubricant to a non-operating compressor, and aspiration tubes from the sump to the low pressure intake zone to each compressor.
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: May 15, 2007
    Assignee: Hallowell International, LLC
    Inventor: David N. Shaw