Patents by Inventor Robert B. Headley

Robert B. Headley 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).

  • Earring force tester
    Patent number: 6029528
    Abstract: An earring force tester for clip-on type earrings detects the spring force of an earring and provides a visual output signal including whether the spring force is above (too tight), below (too loose) or within an acceptable range of force. The output signals are different colored LEDs. The lower and upper boundaries of the range can be adjusted such as to calibrate the device.
    Type: Grant
    Filed: August 17, 1998
    Date of Patent: February 29, 2000
    Assignee: Tiffany and Company
    Inventors: Robert B. Headley, Raymond H. Puffer, Jr., William H. Finger, Thomas P. Bonkenburg, Brian R. Tibbetts