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. 02, 2013
Filed:
Jun. 27, 2008
Applicants:
Jianjuen HU, Boxborough, MA (US);
Gill Pratt, Lexington, MA (US);
Jeff Weber, San Francisco, CA (US);
Inventors:
Jianjuen Hu, Boxborough, MA (US);
Gill Pratt, Lexington, MA (US);
Jeff Weber, San Francisco, CA (US);
Assignee:
Energid Technologies Corporation, Cambridge, MA (US);
Primary Examiner:
Int. Cl.
CPC ...
G09B 23/32 (2006.01);
U.S. Cl.
CPC ...
Abstract
A haptic simulation method determines a location of a needle assembly within a magneto-rheological fluid. The needle assembly within the magneto-rheological fluid is associated with a desired resistance value. A viscosity control signal representative of the desired resistance value is generated. The viscosity control signal is applied to a viscosity control device to vary a viscosity of the magneto-rheological fluid to achieve the desired resistance value.