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:
Feb. 23, 2016
Filed:
Mar. 15, 2013
Applicant:
Laser Mechanisms, Inc., Novi, MI (US);
Inventors:
Gerald F. Hermann, Westland, MI (US);
Daniel R. Buckley, Canton, MI (US);
Scott D. Swartzinski, Plymouth, MI (US);
Assignee:
LASER MECHANISMS, INC., Novi, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 27/26 (2006.01); B23K 26/04 (2014.01); G01B 7/02 (2006.01); B23K 26/36 (2014.01); B23K 26/38 (2014.01); B23K 26/40 (2014.01); B29C 65/00 (2006.01);
U.S. Cl.
CPC ...
G01R 27/26 (2013.01); B23K 26/048 (2013.01); B23K 26/36 (2013.01); B23K 26/364 (2015.10); B23K 26/38 (2013.01); B23K 26/402 (2013.01); G01B 7/023 (2013.01); B23K 2203/42 (2015.10); B29C 66/8246 (2013.01); B29C 66/95 (2013.01);
Abstract
The high speed, high accuracy capacitive gauging system employs an oscillator fed through steep slope filter that is discriminates between very small changes in capacitance even in the presence of electrical noise. During intervals when the probe tip is retracted, the oscillator frequency is calibrated to match the sweet spot in the center of the linear operative region of the steep slope filter. This calibrates the system to overcome the effects of varying temperature and humidity in the manufacturing environment.