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:
Jul. 24, 2018
Filed:
Mar. 13, 2013
Applicant:
Hrl Laboratories, Llc, Malibu, CA (US);
Inventors:
Jacob M. Hundley, Los Angeles, CA (US);
Christopher P. Henry, Thousand Oaks, CA (US);
Geoffrey P. McKnight, Los Angeles, CA (US);
Andrew C. Keefe, Encino, CA (US);
Sloan P. Smith, Woodland Hills, CA (US);
Jacob J. Mikulsky, Santa Monica, CA (US);
Gavin Chang, Agoura Hills, CA (US);
Assignee:
HRL Laboratories, LLC, Malibu, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16F 1/14 (2006.01); F16F 3/02 (2006.01); F16F 1/48 (2006.01); F16D 3/56 (2006.01);
U.S. Cl.
CPC ...
F16F 1/14 (2013.01); F16D 3/56 (2013.01); F16F 1/48 (2013.01); F16F 3/02 (2013.01); F16F 2228/063 (2013.01);
Abstract
A negative stiffness torsional spring. A plurality of spokes secured between a hub and an outer cylinder assembly are preloaded in compression. As the hub is rotated, the stiffness of the torsional spring is negative over a range of angles.