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:
May. 31, 2011
Filed:
Aug. 30, 2008
Applicants:
David L. Churchill, Burlington, VT (US);
Steven W. Arms, Williston, VT (US);
Inventors:
David L. Churchill, Burlington, VT (US);
Steven W. Arms, Williston, VT (US);
Assignee:
Microstrain, Inc., Williston, VT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 11/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A system includes a measuring tool, a fixture, and a rotatable target. The measuring tool includes a light source, an imaging device, and an electronic circuit. The fixture allows the rotatable target to rotate about an axis. The rotatable target includes a surface having microscopic asperities. The imaging device is mounted to provide a sequence of images derived from said microscopic asperities. The electronic circuit is connected to the imaging device for measuring rotation of the rotatable target from the sequence of images.