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:
Aug. 03, 2010
Filed:
Dec. 29, 2005
Donald S. Oblak, North St. Paul, MN (US);
Satinder K. Nayar, Woodbury, MN (US);
Paul M. Fettig, Oakdale, MN (US);
Donald L. Pochardt, Hastings, MN (US);
Donald S. Oblak, North St. Paul, MN (US);
Satinder K. Nayar, Woodbury, MN (US);
Paul M. Fettig, Oakdale, MN (US);
Donald L. Pochardt, Hastings, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A system and method for monitoring a gap between a vibrational body and a reference is achieved by monitoring the resonant frequency of the vibrational body. A portion of the vibrational body is fixed a given distance from the reference by a rigid mounting system. A resonant frequency of the vibrational body is received. Then, a quantity standing in known relation to an approximate change in the length of the gap is determined, based upon the resonant frequency.