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:
Apr. 16, 2019
Filed:
Jan. 12, 2017
Applicant:
Hrl Laboratories, Llc, Malibu, CA (US);
Inventors:
Christopher B. Churchill, Ventura, CA (US);
Geoffrey P. McKnight, Los Angeles, CA (US);
Christopher P. Henry, Thousand Oaks, CA (US);
David W. Shahan, Los Angeles, CA (US);
Assignee:
HRL Laboratories, LLC, Malibu, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16F 1/18 (2006.01); F16F 1/22 (2006.01);
U.S. Cl.
CPC ...
F16F 1/22 (2013.01); F16F 1/185 (2013.01); F16F 2228/063 (2013.01); F16F 2228/066 (2013.01); F16F 2230/183 (2013.01); F16F 2236/04 (2013.01);
Abstract
A variable stiffness structure includes a first negative stiffness element configured to buckle in a first direction, a second negative stiffness element configured to buckle in a second direction opposite to the first direction, and an actuator operatively coupled to ends of the first and second negative stiffness elements to control a stiffness of the variable stiffness structure. The first negative stiffness element and the second negative stiffness element are mode-buckling beams.