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:
Aug. 20, 2013
Filed:
Jun. 12, 2008
Hugh M. Herr, Somerville, MA (US);
Jeff A. Weber, San Francisco, CA (US);
Samuel K. AU, Sunnyvale, CA (US);
Bruce Wayne Deffenbaugh, Honolulu, HI (US);
Lee Harris Magnusson, Bremen, ME (US);
Andreas G. Hofmann, Boston, MA (US);
Benjamin B. Aisen, New York, NY (US);
Hugh M. Herr, Somerville, MA (US);
Jeff A. Weber, San Francisco, CA (US);
Samuel K. Au, Sunnyvale, CA (US);
Bruce Wayne Deffenbaugh, Honolulu, HI (US);
Lee Harris Magnusson, Bremen, ME (US);
Andreas G. Hofmann, Boston, MA (US);
Benjamin B. Aisen, New York, NY (US);
Massachusetts Institute of Technology, Cambridge, MA (US);
Abstract
A powered ankle-foot prosthesis, capable of providing human-like power at terminal stance that increase amputees metabolic walking economy compared to a conventional passive-elastic prosthesis. The powered prosthesis comprises a unidirectional spring, configured in parallel with a force-controllable actuator with series elasticity. The prosthesis is controlled to deliver the high mechanical power and net positive work observed in normal human walking.