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:
Mar. 19, 2019
Filed:
Aug. 19, 2015
Applicant:
Bae Systems Information and Electronics Systems Integration Inc., Nashua, NH (US);
Inventor:
Kenneth D. Cleveland, Hollis, NH (US);
Assignee:
BAE Systems Information and Electronic Systems Integration Inc., Nashua, NH (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09B 23/32 (2006.01); F16F 3/04 (2006.01); G09B 23/10 (2006.01); G09B 9/00 (2006.01); G09B 23/30 (2006.01); G09B 23/28 (2006.01); G01M 17/00 (2006.01); A47C 31/12 (2006.01);
U.S. Cl.
CPC ...
F16F 3/04 (2013.01); G09B 9/00 (2013.01); G09B 23/10 (2013.01); A47C 31/126 (2013.01); G01M 17/00 (2013.01); G09B 23/28 (2013.01); G09B 23/30 (2013.01); G09B 23/32 (2013.01);
Abstract
Non-linear forces are simulated by a dual-rate spring apparatus, which may also be used to impose nonlinear forces. The apparatus includes a carriage and at least two springs arranged sequentially in series with one another. The spring constant is changed by initially allowing both of the springs to compress to a point and, thereafter, after one spring is generally completely compressed, allowing only the other spring to compress further.