Patents by Inventor Lewis A. Simon

Lewis A. Simon 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).

  • Measuring instruments for measuring depth of cavities
    Patent number: 4677756
    Abstract: A measuring instrument comprising a pair of probe elements moveable relative to one another to vary the spacing between sensing areas of each probe, means for producing a signal representing the spacing of said sensing areas, means for monitoring the rate of change of said signal, and means for recording and/or displaying a value representative of said signal upon the rate of change of said signal reaching a predetermined value. Preferably there is a probe including a probe element and a sheath, the probe element being slideable within the sheath and protruding therefrom by a variable amount, means for producing a depth signal representing the amount of protrusion of the probe element from the sheath, means for monitoring the rate of change of said depth signal, and means for recording and/or displaying a value representative of said depth signal upon the rate of change of said depth signal reaching a predetermined value.
    Type: Grant
    Filed: March 20, 1986
    Date of Patent: July 7, 1987
    Assignees: VS Remek Limited, LJS Practice Management Limited
    Inventors: Lewis A. Simon, Michael F. Scarffe