Patents by Inventor Joshua Allen Slavens

Joshua Allen Slavens 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).

  • Circuit and method for controlling an IR source for an analytical instrument
    Patent number: 9243954
    Abstract: A pulse-width-modulated voltage is applied to an IR emitter during the on-time of a primary drive voltage having a frequency of about 2.5 Hz in order to control the power to a predetermined desired level. The secondary modulation is at about 800 Hz. The lower response time of the emitter will, in effect, filter the higher frequency, and it will appear that an average power is being applied to the emitter during the on-time.
    Type: Grant
    Filed: February 20, 2012
    Date of Patent: January 26, 2016
    Assignee: Leco Corporation
    Inventors: Peter M. Willis, Joshua Allen Slavens
  • CIRCUIT AND METHOD FOR CONTROLLING AN IR SOURCE FOR AN ANALYTICAL INSTRUMENT
    Publication number: 20120228502
    Abstract: A pulse-width-modulated voltage is applied to an IR emitter during the on-time of a primary drive voltage having a frequency of about 2.5 Hz in order to control the power to a predetermined desired level. The secondary modulation is at about 800 Hz. The lower response time of the emitter will, in effect, filter the higher frequency, and it will appear that an average power is being applied to the emitter during the on-time.
    Type: Application
    Filed: February 20, 2012
    Publication date: September 13, 2012
    Applicant: Leco Corporation
    Inventors: Peter M. Willis, Joshua Allen Slavens