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. 21, 2017
Filed:
Feb. 27, 2015
Applicant:
Hrl Laboratories, Llc, Malibu, CA (US);
Inventors:
Christopher B. Churchill, Ventura, CA (US);
Geoffrey P. McKnight, Los Angeles, CA (US);
Raviv Perahia, Agoura, CA (US);
Logan D. Sorenson, Agoura Hills, CA (US);
Guillermo Herrera, Winetka, CA (US);
Assignee:
HRL Laboratories, LLC, Malibu, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H 9/46 (2006.01); H03H 9/24 (2006.01);
U.S. Cl.
CPC ...
H03H 9/46 (2013.01); H03H 9/2457 (2013.01);
Abstract
In an embodiment, a tunable stiffness mechanical filter is provided including an input coupler to a negative stiffness structure with a negative stiffness characteristic, and further including a tuner for tuning the negative stiffness structure. An output sensor is located along the negative stiffness structure. The filter may include an amplifier and/or a driver coupled between the output sensor and the negative stiffness structure.