Patents by Inventor Jeffrey Cornell

Jeffrey Cornell 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).

  • DC-to-DC converter input stage with capacitive current limit
    Patent number: 9287789
    Abstract: A power converter may have an input stage that includes a pair of transformer coils, switching circuitry to energize the pair of transformer coils according to an input supply voltage provided by an input source, and a limiting circuit coupled between the pair of transformer coils to cause the input stage to stop drawing current from the input source once the amount of charge drawn from the input source reaches a specific value. An output stage of the power converter may receive energy from the pair of transformer coils, and convert the received energy into an output supply voltage. The pair of transformer coils may continue providing energy stored in a leakage inductance of the pair of transformer coils to the output stage for at least a period of time, once the limiting circuit has caused the input stage to stop drawing current from the input supply.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: March 15, 2016
    Assignee: National Instruments Corporation
    Inventor: Jeffrey A. Cornell
  • DC-to-DC Converter Input Stage with Capacitive Current Limit
    Publication number: 20150035515
    Abstract: A power converter may have an input stage that includes a pair of transformer coils, switching circuitry to energize the pair of transformer coils according to an input supply voltage provided by an input source, and a limiting circuit coupled between the pair of transformer coils to cause the input stage to stop drawing current from the input source once the amount of charge drawn from the input source reaches a specific value. An output stage of the power converter may receive energy from the pair of transformer coils, and convert the received energy into an output supply voltage. The pair of transformer coils may continue providing energy stored in a leakage inductance of the pair of transformer coils to the output stage for at least a period of time, once the limiting circuit has caused the input stage to stop drawing current from the input supply.
    Type: Application
    Filed: August 1, 2013
    Publication date: February 5, 2015
    Applicant: National Instruments Corporation
    Inventor: Jeffrey A. Cornell
  • Heated golf club grip
    Patent number: 6756573
    Abstract: A heating system for warming and drying the grip of a golf club includes an electric heating element and a first electrical connector for the grip, and a second electrical connector and a power supply for the golf bag. The first electrical connector and the second electrical connector electrically engage when the golf club is inserted into the golf bag, thereby energizing the electric heating element.
    Type: Grant
    Filed: May 23, 2003
    Date of Patent: June 29, 2004
    Inventor: Jeffrey Cornell
  • Heated golf club grip
    Publication number: 20030218007
    Abstract: A heating system for warming and drying the grip of a golf club includes an electric heating element and a first electrical connector for the grip, and a second electrical connector and a power supply for the golf bag. The first electrical connector and the second electrical connector electrically engage when the golf club is inserted into the golf bag, thereby energizing the electric heating element.
    Type: Application
    Filed: May 23, 2003
    Publication date: November 27, 2003
    Inventor: Jeffrey Cornell