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. 21, 2026
Filed:
Mar. 13, 2024
University of Manitoba, Winnipeg, CA;
Badhushan Chithravelpillai, Winnipeg, CA;
Gustavo Costa, Jaboatao dos Guararapes, BR;
Zeljko Tomas, Winnipeg, CA;
Nariman Sepehri, Winnipeg, CA;
University of Manitoba, Winnipeg, CA;
Abstract
An electro-hydrostatic actuator having a main circuit, a charging circuit and four different operating quadrants uses return flow from the main circuit to the charging circuit to charge an accumulator of the charging circuit during an actuator-retracting pumping quadrant and an actuator-retracting motoring quadrant of the actuator's four different operating quadrants. A charged state of the accumulator is used to deliver compensatory flows to the main circuit during at least some instances of an actuator-extending pumping quadrant and an actuator-extending motoring quadrant of the four different operating quadrants.