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:
Jun. 10, 2008
Filed:
Oct. 12, 2006
Mark W. Weber, Zimmerman, MN (US);
Mark W. Weber, Zimmerman, MN (US);
Honeywell International, Inc., Morristown, NJ (US);
Abstract
A micro-electromechanical (MEM) device includes a proof mass resiliently mounted to a substrate. The proof mass has first and second combs formed on opposite sides thereof and is electrically coupled to ground. A fixed drive comb is interleaved with the first comb of the proof mass. A fixed pick-off comb is interleaved with a portion of the second comb of the proof mass. A fixed bias comb is interleaved with the second proof mass comb. A substantially direct current (DC) bias is applied to the fixed bias comb. A substantially constant voltage is also exerted on a sense plate beneath the proof mass. The sense plate and bias comb are coupled to a charge amp through capacitors such that transient currents induced by motion of the proof mass will cause current to flow to a charge amp.