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:
Nov. 26, 2002
Filed:
May. 03, 2000
Prateek Dujari, Portland, OR (US);
Terrance J. Dishongh, Hillsboro, OR (US);
Bin Lian, Hillsboro, OR (US);
Damion T. Searls, Portland, OR (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
Piezoelectric wafers are affixed to a circuit card to control displacement of the circuit card when vibrated. A trigger wafer located at an anti-node of the dominant mode shape produces a voltage as a function of modal displacement. A control system responsive to the trigger wafer produces voltages that are applied to flex wafers at a different anti-node of the dominant mode shape. The flex wafers expand and contract in a manner that reduces the modal displacement of the circuit card. Multiple flex wafers can exist, affixed to the circuit card substantially opposite each other, or a single flex wafer can exist with a single trigger wafer. The trigger wafer can be located substantially opposite the flex wafer or can be located elsewhere on the circuit card.