Patents by Inventor David Schlegel

David Schlegel 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).

  • Multipoint relay (MPR) network and related methods
    Patent number: 11979811
    Abstract: A multipoint relay (MPR) wireless network may include spaced apart nodes, with each node including wireless transceiver circuitry, beacon circuitry, and a controller coupled to the wireless transceiver circuitry and beacon circuitry. The controllers may be configured to operate the beacon circuitry to determine a respective link strength metric for each potential link between nodes, assign a set of nodes from among the plurality of nodes to function as gateway nodes and assign other individual nodes to communicate via respective gateway nodes based upon the respective link strength metrics to define the MPR network so that one-hop links have a strongest link strength metric, and operate the wireless transceiver circuitry for communications over the MPR network.
    Type: Grant
    Filed: November 2, 2021
    Date of Patent: May 7, 2024
    Assignee: L3HARRIS TECHNOLOGIES, INC.
    Inventors: Christian Schlegel, David G. Landon
  • Transient inductance identifier for motor control
    Patent number: 5689169
    Abstract: A method and apparatus used with a motor controller for determining transient inductance and rotor resistance upon commissioning of the motor. The estimator drives a single phase of the motor with an excitation current at an operating frequency, determines the d-q axis stator synchronous feedback voltages, divides the excitation current by 2 to produce a positive current signal, multiplies the operating frequency by the positive current signal to produce a current frequency signal and then divides the q-axis voltage feedback by the current frequency signal to produce the transient inductance estimate, divides the d-axis voltage feedback signal by the positive current signal and subtracts stator resistance estimate therefrom to obtain a rotor resistance estimate.
    Type: Grant
    Filed: March 10, 1995
    Date of Patent: November 18, 1997
    Assignee: Allen-Bradley Company, Inc.
    Inventors: Russel J. Kerkman, Jerry Thunes, David Schlegel, Timothy Rowan
  • Apparatus used with an inverter/converter eliminating unintended voltage pulses
    Patent number: 5581169
    Abstract: A method and apparatus used with a motor controller having a PWM inverter for eliminating discontinuities in a stator current that are caused by noise, command signal discontinuities and feedback corrections. While noise, discontinuities, and correction can cause multiple crossings between a carrier signal and a command signal during a half cycle of a carrier signal, the present invention only allows a single crossing during any carrier signal half cycle to effect motor operation.
    Type: Grant
    Filed: August 31, 1994
    Date of Patent: December 3, 1996
    Assignee: Allen-Bradley Company, Inc.
    Inventors: Russel J. Kerkman, David Schlegel, Calvin C. Steinweg