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. 24, 2005
Filed:
Nov. 08, 2002
Alexander Sohn, Fuquay-Varina, NC (US);
Kenneth P. Garrard, Raleigh, NC (US);
Thomas A. Dow, Raleigh, NC (US);
Alexander Sohn, Fuquay-Varina, NC (US);
Kenneth P. Garrard, Raleigh, NC (US);
Thomas A. Dow, Raleigh, NC (US);
North Carolina State University, Raleigh, NC (US);
Abstract
A polar coordinate-based profilometer includes a base, a rotary stage, a linear stage, and a probe device. The rotary stage is mounted on the base and includes a rotary table rotatable about a vertical axis oriented orthogonal to the base. The linear stage is mounted on the rotary table and is rotatable therewith. The linear stage includes a linear slide member that is translatable along a radial axis orthogonal to the vertical axis. The probe device is mounted on the linear slide member and is translatable therewith. The probe device includes a probe tip that is linearly displaceable along the radial direction and communicates with a linear displacement-sensing transducer. Alternatively, the probe device scans an object without contacting the object. Methods are provided for measuring an object based on polar coordinates, and correcting for misalignment prior to measurement.