Patents by Inventor William Davis Simmons

William Davis Simmons 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: 10876551
    Abstract: A robotic joint that includes a hydraulic actuator. The hydraulic actuator includes a hollow tube that has a first opening at a first end of the hollow tube and that has a second opening at a second end of the hollow tube. The hollow tube contains hydraulic fluid. A moveable magnet moves within hollow tube as a result of a magnetic field within the hollow tube. A magnetic field source located outside the hollow tube creates the magnetic field within the hollow tube. When the moveable magnet moves to the first end of the hollow tube, a first piston pushes hydraulic fluid out of the first opening. When the moveable magnet moves to the second end of the hollow tube a second piston pushes hydraulic fluid out of the second opening.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: December 29, 2020
    Inventor: William Davis Simmons
  • Publication number: 20200116169
    Abstract: A robotic joint that includes a hydraulic actuator. The hydraulic actuator includes a hollow tube that has a first opening at a first end of the hollow tube and that has a second opening at a second end of the hollow tube. The hollow tube contains hydraulic fluid. A moveable magnet moves within hollow tube as a result of a magnetic field within the hollow tube. A magnetic field source located outside the hollow tube creates the magnetic field within the hollow tube. When the moveable magnet moves to the first end of the hollow tube, a first piston pushes hydraulic fluid out of the first opening. When the moveable magnet moves to the second end of the hollow tube a second piston pushes hydraulic fluid out of the second opening.
    Type: Application
    Filed: December 16, 2019
    Publication date: April 16, 2020
    Inventor: William Davis Simmons
  • Patent number: 10539164
    Abstract: A hydraulic actuator includes a hollow tube that has a first opening at a first end of the hollow tube and that has a second opening at a second end of the hollow tube. The hollow tube contains hydraulic fluid. A moveable magnet moves within hollow tube as a result of a magnetic field within the hollow tube. A magnetic field source located outside the hollow tube creates the magnetic field within the hollow tube. When the moveable magnet moves to the first end of the hollow tube, a first piston pushes hydraulic fluid out of the first opening. When the moveable magnet moves to the second end of the hollow tube a second piston pushes hydraulic fluid out of the second opening.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: January 21, 2020
    Inventor: William Davis Simmons
  • Publication number: 20170067493
    Abstract: A hydraulic actuator includes a hollow tube that has a first opening at a first end of the hollow tube and that has a second opening at a second end of the hollow tube. The hollow tube contains hydraulic fluid. A moveable magnet moves within hollow tube as a result of a magnetic field within the hollow tube. A magnetic field source located outside the hollow tube creates the magnetic field within the hollow tube. When the moveable magnet moves to the first end of the hollow tube, a first piston pushes hydraulic fluid out of the first opening. When the moveable magnet moves to the second end of the hollow tube a second piston pushes hydraulic fluid out of the second opening.
    Type: Application
    Filed: November 16, 2016
    Publication date: March 9, 2017
    Inventor: William Davis Simmons
  • Patent number: 9528532
    Abstract: A hydraulic actuator includes a hollow tube that has a first opening at a first end of the hollow tube and that has a second opening at a second end of the hollow tube. The hollow tube contains hydraulic fluid. A moveable magnet moves within hollow tube as a result of a magnetic field within the hollow tube. A magnetic field source located outside the hollow tube creates the magnetic field within the hollow tube. When the moveable magnet moves to the first end of the hollow tube, a first piston pushes hydraulic fluid out of the first opening. When the moveable magnet moves to the second end of the hollow tube a second piston pushes hydraulic fluid out of the second opening.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: December 27, 2016
    Inventor: William Davis Simmons
  • Publication number: 20140083289
    Abstract: A hydraulic actuator includes a hollow tube that has a first opening at a first end of the hollow tube and that has a second opening at a second end of the hollow tube. The hollow tube contains hydraulic fluid. A moveable magnet moves within hollow tube as a result of a magnetic field within the hollow tube. A magnetic field source located outside the hollow tube creates the magnetic field within the hollow tube. When the moveable magnet moves to the first end of the hollow tube, a first piston pushes hydraulic fluid out of the first opening. When the moveable magnet moves to the second end of the hollow tube a second piston pushes hydraulic fluid out of the second opening.
    Type: Application
    Filed: September 19, 2013
    Publication date: March 27, 2014
    Inventor: William Davis Simmons
  • Publication number: 20120326942
    Abstract: Provided is a sectorized antenna. For example, there is a sectorized antenna including a plurality of antenna elements situated radially around a central axis, where each of the plurality of antenna elements corresponds to at least one of another plurality of sectors of the antenna. A first switch of the sectorized antenna is configured to selectively couple a first transceiver circuit to each antenna element in a first group of the plurality of antenna elements, where the selective coupling provides a configurable directionality for the antenna.
    Type: Application
    Filed: June 21, 2011
    Publication date: December 27, 2012
    Applicant: BROADCOM CORPORATION
    Inventors: William Davis Simmons, Vadim Piskun
  • Patent number: 5909641
    Abstract: A transmit/receive switch includes a first quarter-wavelength transmission line coupled between an antenna port and a first variable impedance device. The first variable impedance device is coupled between the first quarter-wavelength transmission line and a signal common node. An impedance of the first variable impedance device is controllable variable between a low impedance value and a high impedance value. A second quarter-wavelength transmission line is coupled between first variable impedance device and a first port. A third quarter-wavelength transmission line is coupled between the antenna port and a second variable impedance device. The second variable impedance device is coupled between the third quarter-wavelength transmission line and the signal common node. Like the first variable impedance device, an impedance of the second variable impedance device is controllable variable between a low impedance value and a high impedance value.
    Type: Grant
    Filed: February 24, 1997
    Date of Patent: June 1, 1999
    Assignee: AT&T Wireless Services Inc.
    Inventor: William Davis Simmons
  • Patent number: 5889814
    Abstract: Compensation measurements can be made of the transmit and receive path circuitry of a dual FDD/TDD system which can be selectively operated in either the FDD mode or alternately in the TDD mode. BY selectively controlling the switches coupling low frequency and high frequency receivers and coupling low frequency and high frequency transmitters to a diplexer, compensation measurements can be made for both FDD and TDD modes of operation.
    Type: Grant
    Filed: February 24, 1997
    Date of Patent: March 30, 1999
    Assignee: AT&T Wireless Services, Inc.
    Inventor: William Davis Simmons
  • Patent number: 5884197
    Abstract: Cross-over modulation between radio frequency circuits and audio circuits is minimized in a wireless portable transceiver by locating all audio circuitry in a first section of the portable transceiver and all radio frequency circuitry in a second, separate section of the portable transceiver. In view of modality considerations in small portable transceivers, an audio signal is either radiated or received in the vicinity of the radio frequency circuitry. Isolation of the audio signal is achieved by routing this signal while in its acoustic form. Since audio signals in an electrical form are not routed around or near the radio frequency circuitry, cross-over modulation does not occur between the radio frequency circuitry and the audio circuitry.
    Type: Grant
    Filed: November 30, 1995
    Date of Patent: March 16, 1999
    Assignee: Lucent Technologies Inc.
    Inventors: George L. Ricardo, William Davis Simmons, Bernie Dee Tull, Jr.