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. 01, 2008
Filed:
May. 25, 2006
Peter Lafond, Redmond, WA (US);
Peter LaFond, Redmond, WA (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
A closed-loop, comb drive device that reduces certain 'common mode' sensor errors. The device includes a comb structure, electronics, a substrate, and a position sensor. The comb structure includes two comb-drive sections, each having at least two subsections. The comb drive sub-sections in each section are positioned in a diagonal relationship to each other relative to the device axes. A separate pick-off section, along with the electronics, determine which of the two drive sections should receive a voltage differential, and the size of that differential. The diagonal relationship within each drive section eliminates many of the large scale factor errors which often occur in prior-art designs.