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:
Sep. 16, 2014
Filed:
Feb. 19, 2013
Applicant:
Northwestern University, Evanston, IL (US);
Inventors:
James Edward Colgate, Evanston, IL (US);
Michael Peshkin, Evanston, IL (US);
John Glassmire, Boulder, CO (US);
Laura Winfield Alexander, Sunbury, OH (US);
Assignee:
Northwestern University, Evanston, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G 5/00 (2006.01); G06F 3/033 (2013.01); G06F 3/041 (2006.01); G06F 3/0362 (2013.01); G06F 3/01 (2006.01); G06F 3/042 (2006.01);
U.S. Cl.
CPC ...
G06F 3/0414 (2013.01); G06F 3/0362 (2013.01); G06F 3/016 (2013.01); G06F 3/041 (2013.01); G06F 3/0421 (2013.01);
Abstract
A haptic device provides indirect haptic feedback and includes a substrate having a touch surface, a position sensor and a friction modulator associated with the substrate, wherein a coefficient of friction of the touch surface is modulated in response to a sensed position of relative to the touch surface and/or a derivative thereof.