Patents by Inventor Robert H. Chall

Robert H. Chall 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).

  • System and method for measuring air bearing gap distance
    Patent number: 7671607
    Abstract: A method of determining the air gap distance between an air bearing pad and an apparatus floating on the air bearing pad comprises coupling a first probe to the air bearing pad; coupling a second probe to the apparatus floating on the air bearing pad, wherein the first and second probes provide the capacitance level between the air bearing pad and the apparatus; converting the capacitance level to a frequency; converting the frequency to a voltage level proportional to the air gap distance; and calculating the air gap distance based on the voltage level.
    Type: Grant
    Filed: September 6, 2007
    Date of Patent: March 2, 2010
    Assignee: Honeywell International Inc.
    Inventors: Charles F. Hayek, Mark D. DuBois, Robert H. Chall
  • SYSTEM AND METHOD FOR MEASURING AIR BEARING GAP DISTANCE
    Publication number: 20090067094
    Abstract: A method of determining the air gap distance between an air bearing pad and an apparatus floating on the air bearing pad comprises coupling a first probe to the air bearing pad; coupling a second probe to the apparatus floating on the air bearing pad, wherein the first and second probes provide the capacitance level between the air bearing pad and the apparatus; converting the capacitance level to a frequency; converting the frequency to a voltage level proportional to the air gap distance; and calculating the air gap distance based on the voltage level.
    Type: Application
    Filed: September 6, 2007
    Publication date: March 12, 2009
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Charles F. Hayek, Mark D. DuBois, Robert H. Chall