US 11,806,303 B2
Robotic walking assistant
ChengKun Zhang, Temple City, CA (US); Luis Alfredo Mateos Guzman, San Gabriel, CA (US); Houzhu Ding, San Gabriel, CA (US); Zhen Xiu, Chino Hills, CA (US); and Huan Tan, Pasadena, CA (US)
Assigned to UBTECH NORTH AMERICA RESEARCH AND DEVELOPMENT CENTER CORP, Pasadena, CA (US); and UBTECH ROBOTICS CORP LTD, Shenzhen (CN)
Filed by UBTECH NORTH AMERICA RESEARCH AND DEVELOPMENT CENTER CORP, Pasadena, CA (US); and UBTECH ROBOTICS CORP LTD, Shenzhen (CN)
Filed on Jun. 28, 2021, as Appl. No. 17/359,672.
Prior Publication US 2022/0409468 A1, Dec. 29, 2022
Int. Cl. A61H 3/04 (2006.01); G05D 1/02 (2020.01); G05D 1/00 (2006.01)
CPC A61H 3/04 (2013.01) [G05D 1/0088 (2013.01); G05D 1/0231 (2013.01); A61H 2003/043 (2013.01); A61H 2201/1635 (2013.01); A61H 2201/1659 (2013.01); A61H 2201/5007 (2013.01); A61H 2201/5092 (2013.01); A61H 2203/0406 (2013.01); A61H 2203/0425 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A robotic walking assistant, comprising:
a wheeled base comprising a base and one or more position adjustable wheels connected to the base, each of the one or more wheels slidable with respect to the base between a retracted position and an extended position in a direction that is substantially parallel to a surface where the wheeled base moves;
a body disposed in a vertical direction, positioned on the wheeled base, and having at least one handle;
one or more actuated feet connected to the base; and
a control system that receives command instructions;
wherein in response to a rest mode command instruction, the control system is configured to move the one or more wheels to the extended position and to direct the one or more actuated feet to move down to be in contact with the surface;
wherein in response to a walking assistive mode command instruction, the control system is configured to move the one or more wheels to the extended position and to direct the one or more actuated feet to move up away from the surface; and
wherein in response to an autonomous mode command instruction, the control system is configured to move the one or more wheels to the retracted position and to direct the one or more actuated feet to move up away from the surface.