Patents by Inventor Talmage Mathis

Talmage Mathis 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).

  • Error detection system for two-state fiber optic sensors
    Patent number: 4762992
    Abstract: An error detection system is provided for a two-state fiber optic sensor. An amplified photodetector signal is sampled by each of an ON-OFF threshold detector, a disconnect threshold detector and a slope detector. The ON-OFF threshold detector monitors whether the detector signal is above or below an ON-OFF threshold value corresponding to the parameter being sensed and activates an appropriate sensor output. The disconnect threshold detector monitors the constant low level detector signal corresponding to low level light received by the detector even when the thresold detector is in the OFF state, and triggers an error signal should the detector signal fall below a disconnect threshold value. The slope detector monitors the rate of change of the detector signal.
    Type: Grant
    Filed: June 10, 1987
    Date of Patent: August 9, 1988
    Assignee: Kollmorgen Corporation
    Inventors: Erann Gat, Eric D. Park, Talmage Mathis
  • Motor drive enclosure
    Patent number: D608300
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: January 19, 2010
    Assignee: Kollmorgen Corporation
    Inventors: John Boyland, Shelly Hylton, Nurit Barlev Rohar, George Yundt, Mike Joseph, Perry Slaughter, Talmage Mathis, George Ellis, Wei Tong, Lyle Ostby, Jerry Johnson, Oren Saraf