Patents by Inventor David POPKEN

David POPKEN 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).

  • Ultrasonic electrolyte sensor
    Patent number: 9548520
    Abstract: A system is disclosed for monitoring an electrolyte level in a battery cell and generating an indication of a fault condition when the electrolyte level drops below a predetermined acceptable level. The system may make use of a controller, an ultrasonic transmit circuit for transmitting an ultrasonic signal into an interior area of the battery cell, and an ultrasonic receive circuit for receiving the ultrasonic signal after it has been reflected from the interior area of the battery cell. The controller may use the reflected ultrasonic signal and a predetermined calibration signal representing the predetermined acceptable level of the electrolyte to determine when the electrolyte level has dropped below the predetermined acceptable level.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: January 17, 2017
    Assignee: Liebert Corporation
    Inventors: Edward W. Deveau, David Stewart, David Popken, Juan Martinez
  • Ultrasonic Electrolyte Sensor
    Publication number: 20130302655
    Abstract: A system is disclosed for monitoring an electrolyte level in a battery cell and generating an indication of a fault condition when the electrolyte level drops below a predetermined acceptable level. The system may make use of a controller, an ultrasonic transmit circuit for transmitting an ultrasonic signal into an interior area of the battery cell, and an ultrasonic receive circuit for receiving the ultrasonic signal after it has been reflected from the interior area of the battery cell. The controller may use the reflected ultrasonic signal and a predetermined calibration signal representing the predetermined acceptable level of the electrolyte to determine when the electrolyte level has dropped below the predetermined acceptable level.
    Type: Application
    Filed: May 8, 2013
    Publication date: November 14, 2013
    Applicant: LIEBERT CORPORATION
    Inventors: Edward W. DEVEAU, David STEWART, David POPKEN, Juan MARTINEZ