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. 26, 2013
Filed:
Mar. 21, 2007
James Edward Colgate, Evanston, IL (US);
Michael Peshkin, Chicago, IL (US);
John Glassmire, Chicago, IL (US);
Laura Winfield, Evanston, IL (US);
James Edward Colgate, Evanston, IL (US);
Michael Peshkin, Chicago, IL (US);
John Glassmire, Chicago, IL (US);
Laura Winfield, Evanston, IL (US);
Northwestern University, Evanston, IL (US);
Abstract
A haptic device provides indirect haptic feedback and virtual texture sensations to a user by modulation of friction of a touch surface of the device in response to one or more sensed parameters and/or time. The sensed parameters can include, but are not limited to, sensed position of the user's finger, derivatives of sensed finger position such as velocity and/or acceleration, sensed finger pressure, and/or sensed direction of motion of the finger. The touch surface is adapted to be touched by a user's bare finger, thumb or other appendage and/or by an instrument such as a stylus held by the user.