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:
May. 19, 1998
Filed:
Nov. 30, 1994
Applicant:
Inventors:
Mark R Jolly, Holly Springs, NC (US);
Mark A Norris, Raleigh, NC (US);
Dino J Rossetti, Raleigh, NC (US);
Douglas A Swanson, Apex, NC (US);
Steve C Southward, Cary, NC (US);
Assignee:
Lord Corporation, Cary, NC (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03B / ; A61F / ;
U.S. Cl.
CPC ...
381 714 ; 381 7111 ; 381 7114 ;
Abstract
Actuators for active vibrational energy control systems which are frequency focused. The high-frequency cancellation function is decoupled from the low-frequency cancellation function to enable the size, force, number and placement of the actuators to be optimized. A hybrid system employing structural actuators to cancel low-frequency vibrations and speakers to cancel higher-frequency vibrations is also taught.