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:
Jun. 01, 2021
Filed:
Nov. 11, 2019
Amazon Technologies, Inc., Seattle, WA (US);
Beth A. Marcus, Bedford, MA (US);
John William Romanishin, Cambridge, MA (US);
AMAZON TECHNOLOGIES, INC., Seattle, WA (US);
Abstract
A system for backdrivability control of end effectors in robotic systems is described. In one example, a brake assembly for backdrivability control includes a frame having a clearance area. The brake assembly is positioned so that the rotor of the motor extends through the clearance area. The brake assembly includes a brake band secured at one distal end along the clearance area, extending around a periphery of the clearance area, and secured at a second distal end at a flexure arm of the frame. The brake assembly also includes a brake actuator including a permanent magnet at the distal end of the flexure arm and an electromagnet secured to the fame. The brake actuator can be energized to tighten the brake band around the rotor of the motor, arresting or dampening motion of the end effector for certain movements.