Patents by Inventor John A. Lofgren

John A. Lofgren 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: 9523597
    Abstract: A fuel flow meter assembly for detecting fraud caused by tampering. The fuel flow meter assembly comprises a fuel flow meter comprising a shaft and a fiber optic displacement sensor operatively connected to the fuel flow meter shaft for generating information representative of an amount of fuel delivered through the fuel flow meter. The fuel flow meter assembly also comprises at least one transponder coupled with one of the fuel flow meter shaft and the displacement sensor. Further, the fuel flow meter assembly comprises at least one interrogator electronics coupled with the other of the fuel flow meter shaft and the displacement sensor. The at least one interrogator electronics is configured for remote electronic communication with the at least one transponder.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: December 20, 2016
    Assignee: Gilbarco Inc.
    Inventors: Rodger K. Williams, Edward A. Payne, John A. Lofgren, Mark B. Monson
  • Publication number: 20140260514
    Abstract: A fuel flow meter assembly for detecting fraud caused by tampering. The fuel flow meter assembly comprises a fuel flow meter comprising a shaft and a fiber optic displacement sensor operatively connected to the fuel flow meter shaft for generating information representative of an amount of fuel delivered through the fuel flow meter. The fuel flow meter assembly also comprises at least one transponder coupled with one of the fuel flow meter shaft and the displacement sensor. Further, the fuel flow meter assembly comprises at least one interrogator electronics coupled with the other of the fuel flow meter shaft and the displacement sensor. The at least one interrogator electronics is configured for remote electronic communication with the at least one transponder.
    Type: Application
    Filed: March 17, 2014
    Publication date: September 18, 2014
    Applicant: Gilbarco Inc.
    Inventors: Rodger K. Williams, Edward A. Payne, John A. Lofgren, Mark B. Monson
  • Patent number: 6016108
    Abstract: A device for optimizing antenna operation comprises a wireless control signal detector for detecting a wireless control signal generated by a remote control unit, and a microprocessor operatively connected to the detector. The microprocessor is programmed to analyze the wireless control signal during a learning operation to determine a coding format of the wireless control signal and to analyze the wireless control signal during a normal use operation to determine a broadcast channel or station selected by a user. The device additionally comprises a plurality of tuning elements operatively connectable to an antenna for tuning the antenna, and a plurality of switching circuits operatively connected to the tuning elements and to the microprocessor. The switching circuits are operable to selectively couple the tuning elements to the antenna, in response to signals from the microprocessor, thereby optimizing signal reception by the antenna for a channel or station selection encoded in the wireless control signal.
    Type: Grant
    Filed: January 19, 1998
    Date of Patent: January 18, 2000
    Assignee: Terk Technologies Corporation
    Inventors: Neil D. Terk, John A. Lofgren, William R. Steinike
  • Patent number: 5812066
    Abstract: A device for optimizing antenna operation, a wireless control signal detector detects a wireless control signal generated by a remote control unit, and a microprocessor is operatively connected to the detector. The microprocessor is programmed to analyze the wireless control signal during a learning operation to determine a coding format of the wireless control signal and to analyze the wireless control signal during a normal use operation to determine a broadcast channel or station selected by a user. The device additionally comprises a plurality of tuning elements operatively connectable to an antenna for tuning the antenna, and a plurality of switching circuits operatively connected to the tuning elements and to the microprocessor. The switching circuits are operable to selectively couple the tuning elements to the antenna, in response to signals from the microprocessor, thereby optimizing signal reception by the antenna for a channel or station selection encoded in the wireless control signal.
    Type: Grant
    Filed: August 16, 1995
    Date of Patent: September 22, 1998
    Assignee: Terk Technologies Corporation
    Inventors: Neil D. Terk, John A. Lofgren, William R. Steinike
  • Patent number: 5581617
    Abstract: A system is provided which transmits either analog or digital data signals over the air. The system includes a transmitter and a receiver. The transmitter and receiver are arranged to transmit signals using a carrier signal having a high frequency such as in the range of 902-928 MHz. The transmitter and receiver are configured to provide for the transmission of two channels of stereophonic signals while maintaining high signal-to-noise ratios, good frequency response, and low distortion. To provide for the proper transmission of signals between transmitter 10 and receiver 12, these devices include oscillating circuits having ceramic resonators which provide a base frequency which is readily modulated to facilitate proper transmission of either analog or digital signals between the transmitter and receiver.
    Type: Grant
    Filed: January 6, 1994
    Date of Patent: December 3, 1996
    Assignee: L. S. Research, Inc.
    Inventors: Larry Schotz, Robert T. Buczkiewicz, John A. Lofgren
  • Patent number: 5299264
    Abstract: A system is provided which transmits either analog or digital data signals over the air. The system includes including a transmitter and a receiver. The transmitter and receiver are arranged to transmit signals using a carrier signal having a high frequency such as in the range of 902-928 MHz. The transmitter and receiver are configured to provide for the transmission of two channels of stereophonic signals while maintaining high signal-to-noise ratios, good frequency response, and low distortion. To provide for the proper transmission of signals between transmitter 10 and receiver 12, these devices include oscillating circuits having ceramic resonators which provide a base frequency which is readily modulated to facilitate proper transmission of either analog or digital signals between the transmitter and receiver.
    Type: Grant
    Filed: August 21, 1991
    Date of Patent: March 29, 1994
    Assignee: L. S. Research, Inc.
    Inventors: Larry Schotz, Robert T. Buczkiewicz, John A. Lofgren