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:
Jan. 07, 1997
Filed:
Nov. 29, 1994
Applicant:
Inventors:
David W Giragosian, Ridgefield, CT (US);
James R Norris, Jr, Georgetown, CT (US);
Howard A Sholl, Storrs, CT (US);
Assignee:
Dapco Industries, Inc., Ridgefield, CT (US);
Primary Examiner:
Int. Cl.
CPC ...
G01B / ; G01N / ; G05B / ; B23K / ;
U.S. Cl.
CPC ...
32420718 ; 73601 ; 21912434 ; 318576 ; 324233 ; 324226 ; 324243 ;
Abstract
A detector and tracker using a three coil sensor for is disclosed. The detector detects eddy current variations caused by differences in electromagnetic characteristics in two adjacent materials. The eddy current variations are measured and compared to determine the magnitude and direction the detector may be from the center of one of the adjacent materials. The magnitude and direction determination by the detector can be used to drive a process controller to position the sensor.