Patents by Inventor Randall PHILIPSON

Randall PHILIPSON 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).

  • Capacitive continuous fluid level sensor
    Patent number: 10371555
    Abstract: A fluid level sensor includes fluid sensing electrodes, reference electrodes, and a controller. The reference electrodes compensate for temperature fluctuations about the fluid electrodes. The controller determines fluid level based on the response of the fluid electrodes to the presence of the fluid in proximity thereto.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: August 6, 2019
    Assignee: TOUCHSENSOR TECHNOLOGIES, LLC
    Inventor: Randall Philipson
  • Magnetic encoder knob with fixed center
    Patent number: 10269515
    Abstract: A magnetic encoder knob system includes a knob associated with a first side of a substrate and a magnetic encoder associated with a second side of the substrate. First and second magnets are disposed in or on the knob such that magnetic flux lines extending between the first and second magnets pass through the encoder so that the encoder responds to rotation of the magnetic flux lines in response to rotation of the knob.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: April 23, 2019
    Assignee: TOUCHSENSOR TECHNOLOGIES, LLC
    Inventors: Randall Philipson, Randall A. Hornig
  • CAPACITIVE SENSOR WITH SELF-TEST FEATURE
    Publication number: 20180136271
    Abstract: A capacitive sensor includes sensor electrode structure and a controller operating the sensor. The sensor also includes test drive electrode structure or a reference capacitor, the controller operating the test drive electrode structure or the reference capacitor to test operability of the sensor.
    Type: Application
    Filed: November 13, 2017
    Publication date: May 17, 2018
    Inventor: Randall Philipson
  • MAGNETIC ENCODER KNOB WITH FIXED CENTER
    Publication number: 20180066963
    Abstract: A magnetic encoder knob system includes a knob associated with a first side of a substrate and a magnetic encoder associated with a second side of the substrate. First and second magnets are disposed in or on the knob such that magnetic flux lines extending between the first and second magnets pass through the encoder so that the encoder responds to rotation of the magnetic flux lines in response to rotation of the knob.
    Type: Application
    Filed: August 29, 2017
    Publication date: March 8, 2018
    Inventors: Randall PHILIPSON, Randall A. HORNIG
  • CAPACITIVE CONTINUOUS FLUID LEVEL SENSOR
    Publication number: 20180023993
    Abstract: A fluid level sensor includes fluid sensing electrodes, reference electrodes, and a controller. The reference electrodes compensate for temperature fluctuations about the fluid electrodes. The controller determines fluid level based on the response of the fluid electrodes to the presence of the fluid in proximity thereto.
    Type: Application
    Filed: July 20, 2017
    Publication date: January 25, 2018
    Inventor: Randall PHILIPSON