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:
Jul. 16, 2019
Filed:
Aug. 27, 2013
Ekso Bionics, Inc., Richmond, CA (US);
Kurt Reed Amundson, Berkeley, CA (US);
Russdon Angold, American Canyon, CA (US);
David Scheinman, San Francisco, CA (US);
Tim Swift, Clovis, CA (US);
Daniel P Norboe, Alameda, CA (US);
Robert Moore, Union City, CA (US);
Jonathan Beard, Berkeley, CA (US);
Kyle Edelberg, Pasadena, CA (US);
Ekso Bionics, Inc., Richmond, CA (US);
Abstract
The invention is directed to controlling a hydraulic actuation system having at least one degree of freedom, a prime mover, at least one actuation module and a controller, with each actuation module including: an over-center variable displacement pump having a power input connection configured to power the pump from the prime mover and a displacement varying input for varying the displacement of the pump; a displacement varying actuator configured to modulate the displacement varying input of the pump; an output actuator in direct communication with the pump, the output actuator configured to drive a corresponding degree of freedom; and at least one sensor establishing a feedback measurement that represents a force or motion of the output actuator. Based on a value of each feedback measurement, the force or motion of the output actuator is regulated by controlling the prime mover and the displacement actuator for the output actuator.