Patents by Inventor Charles J. Metyka, Jr.

Charles J. Metyka, Jr. 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).

  • Alarm condition detecting method and apparatus
    Patent number: 5155468
    Abstract: Methods for detecting an alarm condition includes repeatedly converting an ambient condition into voltage outputs in detector apparatus repeatedly converting the voltage outputs into a series of actual analog values, polling the series of actual analog values to determine an average analog value, repeatedly comparing the difference between the average analog value and the last actual analog value with a predetermined delta-threshold value and indicating an alarm condition when the difference between the average analog value and the last actual analog value exceeds the delta-threshold value. Methods for detecting an alarm condition further includes repeatedly comparing the average analog value with a maintenance threshold value and indicating a maintenance signal when the average analog value exceeds the maintenance threshold value.
    Type: Grant
    Filed: May 17, 1990
    Date of Patent: October 13, 1992
    Assignee: Sinmplex Time Recorder Co.
    Inventors: Lawrence G. Stanley, Charles J. Metyka, Jr., Robert W. Farley