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:
Apr. 18, 2006
Filed:
Dec. 29, 2004
Martin Christopher Klement, Lexington, KY (US);
Martin Christopher Klement, Lexington, KY (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
A torsion oscillator (FIG.) is stabilized in operation by determining the current resonant frequency (); in a first procedure, observing the oscillator for change in resonant frequency (), and then restoring the amplitude and median offset () without changing the drive frequency. In an alternative procedure, after determining the resonant frequency (); setting the drive frequency close to but offset from the current resonant frequency (), observing the oscillator for change in resonant frequency (), and the restoring the close offset to the changed resonant frequency (). By operating slightly off peak, the direction of resonant change is immediately known. The first procedure has less difficulties in implementation, but requires more power.