Patents by Inventor Aharon P. Grundman

Aharon P. Grundman 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).

  • Instrument for tracing curved figures particularly ellipses
    Patent number: 4150487
    Abstract: A hand-held compass-type instrument for tracing curved figures, particularly ellipses, is described comprising a manipulatable finger-gripping element; an anchor arm pivotably mounted at one end to one end of the finger-gripping element, the opposite end of the anchor arm being adapted to be anchored to the surface on which the curved figure is to be traced; a tracing arm pivotably mounted at one end to the finger-gripping element, the opposite end of the tracing arm being adapted to trace the curved figure; and an eccentric linkage, having presettable means for presetting its eccentricity, coupled between the anchor and tracing arms for constraining the tracing arm to pivot in a presettable eccentric manner with respect to the anchor arm when the finger-gripping element is manipulated to trace the figure.
    Type: Grant
    Filed: May 22, 1978
    Date of Patent: April 24, 1979
    Inventor: Aharon P. Grundman