The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 02, 1976
Filed:
Jan. 05, 1976
Fred J Kamphoefner, Atherton, CA (US);
Gerry B Andeen, Menlo Park, CA (US);
Stanford Research Institute, Menlo Park, CA (US);
Abstract
A compact apparatus for analyzing a signature or other handwritten markings, including a horizontal platen which can support paper on which a signature is written, a pair of inner beams extending horizontally from opposite sides of the platen to an intermediate structure, and a pair of outer beams extending horizontally, and in directions perpendicular to the inner beams, between the intermediate structure and a supporting frame. Strain gauges are attached to the sides of the inner and outer beams to sense forces applied to the platen by the tip of a writing instrument in the horizontal 'X' and 'Y' directions, and additional strain gauges are attached to opposite faces of the outer beams to sense forces in the vertical, or 'Z,' direction.