Patents by Inventor Ronald Cyril Lewis, Jr.

Ronald Cyril Lewis, 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).

  • Apparatus and method for detecting when a measured variable represented by a string of digital pulses reaches a plateau
    Patent number: 4041404
    Abstract: A method for detecting a plateau for a measured variable by comparing the clock pulses from a dual slope analog to digital converter which are counted during consecutive pairs of conversions. The counter is decremented during the first conversion and incremented during the second. If the counts are detected as being identical within a prescribed number of counts an accumulator is incremented. A predetermined number of successive increments of the accumulator indicates a plateau. The accumulator is cleared whenever the counts of a pair of conversions are not within the window.
    Type: Grant
    Filed: June 1, 1976
    Date of Patent: August 9, 1977
    Assignee: Leeds & Northrup Company
    Inventor: Ronald Cyril Lewis, Jr.