Patents by Inventor Thomas J. Frys

Thomas J. Frys 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).

  • Adjustable door hinge monitoring device
    Patent number: 6577235
    Abstract: The invention is in a device for monitoring the position of a swinging door that is mounted on a stationary frame, the device essentially comprises a magnet and magnetic proximity sensor which are mounted in coaxially aligned relation on a pair of opposing leafs of a hinge. Means are provided for moving the magnet to and from the sensor to correspondingly vary the gap or spacing between them.
    Type: Grant
    Filed: May 1, 2001
    Date of Patent: June 10, 2003
    Assignee: Markar Products, Inc.
    Inventor: Thomas J. Frys
  • Adjustable door hinge monitoring device
    Publication number: 20020162193
    Abstract: The invention is in a device for monitoring the position of a swinging door that is mounted on a stationary frame, the device essentially comprises a magnet and magnetic proximity sensor which are mounted in coaxially aligned relation on a pair of opposing leafs of a hinge. Means are provided for moving the magnet to and from the sensor to correspondingly vary the gap or spacing between them.
    Type: Application
    Filed: May 1, 2001
    Publication date: November 7, 2002
    Inventor: Thomas J. Frys