Patents by Inventor Sidney Preston

Sidney Preston 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).

  • Patent number: 4131340
    Abstract: A temple rotatably mounted on an eyepiece of an eyeglass frame by a hinge is adjustable in length relative to the eyepiece for the purpose of adjusting the maximum degree of rotation of the temple to permit the adjustment of the temple to conform to the dimensions of the wearer's head by pushing the temple relative to the hinge. The temple has a slot receiving therethrough a pair of pins mounted on the hinge. The pins are connected at their outer ends to a resilient clamp plate which clamps the adjusted temple to the hinge.
    Type: Grant
    Filed: January 10, 1977
    Date of Patent: December 26, 1978
    Inventor: Sidney Preston