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. 17, 2015
Filed:
Mar. 10, 2011
Applicants:
Paul W. Dwyer, Seattle, WA (US);
Arthur Savchenko, Kirkland, WA (US);
Inventors:
Paul W. Dwyer, Seattle, WA (US);
Arthur Savchenko, Kirkland, WA (US);
Assignee:
Honeywell International Inc., Morristown, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01C 19/5607 (2012.01);
U.S. Cl.
CPC ...
G01C 19/5607 (2013.01);
Abstract
An accelerometer device having a proof mass, a support base, a hinge that flexibly connects the proof mass to the support base, a double-ended fork (DETF) having two tines. The tines are made of only piezoelectric material. A plurality of electrode surfaces surround at least portions of the tines for inducing electric fields at the first tine is opposite a direction of the induced electric field at the second tine at similar locations along a longitudinal axis of the tines. This causes the tines to resonate in-plane and out of phase.