Patents by Inventor David L. Wills

David L. Wills 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: 11975424
    Abstract: An adaptor for a fastener driver assembly employs a bi-positionable angle guide assembly mounted to a head having an entry reference surface defining an opening for a fastener. The adaptor provides a proper location and entry angle for the fastener for implementing various structural connections. A pivotal angle guide has a pair of reference engagement edges functionally configured to engage either an upper horizontal member or a lower horizontal member. A locator having a location reference is mounted to the guide assembly. In one mode, the reference edges, together with the location reference, define a proper entry location and normal angle for connecting a horizontal member, which may be either an upper plate or a lower plate, to a rim board or other structural member. The selected adaptor position is achieved by securing the adaptor in one of two stable angular positions relative to the drive axis of the fastener driver assembly.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: May 7, 2024
    Assignee: OMG, Inc.
    Inventors: R. Timothy Irwin, Mark A. Dicaire, Christopher C. Will, David L. Mathieu, Timothy F. Gillis, Arun Srinivasan Venkatesan, Jonathan W. Dezielle
  • Patent number: 10966100
    Abstract: An amplifier for a radio communications system in a shielded tunnel is disclosed. In one example, the amplifier comprises a processor configured to execute a plurality of modules comprising a gain control module and an attenuation control module. Methods and systems are further provided for controlling and monitoring amplifier characteristics.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: March 30, 2021
    Assignee: TUNNEL RADIO OF AMERICA, INC.
    Inventors: Craig S. Pataky, David L. Wills, William David Chase
  • Publication number: 20200314661
    Abstract: An amplifier for a radio communications system in a shielded tunnel is disclosed. In one example, the amplifier comprises a processor configured to execute a plurality of modules comprising a gain control module and an attenuation control module. Methods and systems are further provided for controlling and monitoring amplifier characteristics.
    Type: Application
    Filed: June 15, 2020
    Publication date: October 1, 2020
    Inventors: Craig S. Pataky, David L. Wills, William David Chase
  • Patent number: 10728770
    Abstract: An amplifier for a radio communications system in a shielded tunnel is disclosed. In one example, the amplifier comprises a processor configured to execute a plurality of modules comprising a gain control module and an attenuation control module. Methods and systems are further provided for controlling and monitoring amplifier characteristics.
    Type: Grant
    Filed: May 1, 2019
    Date of Patent: July 28, 2020
    Assignee: TUNNEL RADIO OF AMERICA, INC.
    Inventors: Craig S. Pataky, David L. Wills, William David Chase
  • Publication number: 20190342765
    Abstract: An amplifier for a radio communications system in a shielded tunnel is disclosed. In one example, the amplifier comprises a processor configured to execute a plurality of modules comprising a gain control module and an attenuation control module. Methods and systems are further provided for controlling and monitoring amplifier characteristics.
    Type: Application
    Filed: May 1, 2019
    Publication date: November 7, 2019
    Inventors: Craig S. Pataky, David L. Wills, William David Chase
  • Patent number: 6993286
    Abstract: The dual band bi-directional amplifier has only one amplifier chain having an uplink amplifier and a downlink amplifier, but can nonetheless amplify signals from two frequency bands in both an uplink and a downlink direction between two antennas. This is possible by using duplexers and circulators to separate signals to and from each antenna into the two bands. In particular, for each frequency band handled by the circuit, the dual band bi-directional amplifier has a duplexer set for separating the signals from one of the bands into the uplink and downlink direction. In the case of a dual band amplifier, there are two sets of duplexers, one for each band. By using duplexers and circulators to differentiate signals in different bands travelling in different directions, there is no need for additional amplifier chains, which increase the manufacturing costs.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: January 31, 2006
    Assignee: Radio Frequency Systems, Inc.
    Inventors: Liping Zhen, David L. Wills
  • Publication number: 20040192194
    Abstract: The dual band bi-directional amplifier has only one amplifier chain having an uplink amplifier and a downlink amplifier, but can nonetheless amplify signals from two frequency bands in both an uplink and a downlink direction between two antennas. This is possible by using duplexers and circulators to separate signals to and from each antenna into the two bands. In particular, for each frequency band handled by the circuit, the dual band bi-directional amplifier has a duplexer set for separating the signals from one of the bands into the uplink and downlink direction. In the case of a dual band amplifier, there are two sets of duplexers, one for each band. By using duplexers and circulators to differentiate signals in different bands travelling in different directions, there is no need for additional amplifier chains, which increase the manufacturing costs.
    Type: Application
    Filed: August 2, 2002
    Publication date: September 30, 2004
    Applicant: RADIO FREQUENCY SYSTEMS, INC.
    Inventors: Liping Zhen, David L. Wills
  • Patent number: 5455537
    Abstract: In a feed forward amplifier (100), a main amplifier (125) is coupled between an input (102) at which an input signal is received and an output (173) at which an output signal is provided. The output signal is an amplification of the input signal. A sample of the output signal is compared (144) with a sample of the input signal to produce a difference signal indicative of distortions introduced by the main amplifier (125). An error amplifier (165) provides a distortion signal which is an amplification of the difference signal, and the distortion signal is combined (169) with the output signal to compensate for main amplifier distortions. A random frequency, constant amplitude sine wave pilot signal is combined (117) with the input signal, and a correlation power detector (194,195,202,212,213) is provided to determine the magnitude of the pilot signal in the output signal. The gain and phase of the difference signal is then adjusted (155) to minimize the magnitude of the pilot signal in the output signal.
    Type: Grant
    Filed: August 19, 1994
    Date of Patent: October 3, 1995
    Assignee: Radio Frequency Systems, Inc.
    Inventors: Robert S. Larkin, David L. Wills