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:
Feb. 20, 2024
Filed:
Aug. 11, 2022
Logistics and Supply Chain Multitech R&d Centre Limited, Pok Fu Lam, HK;
Wing Leung Chow, Pok Fu Lam, HK;
LOGISTICS AND SUPPLY CHAIN MULTITECH R & D CENTRE LIMITED, Pok Fu Lam, HK;
Abstract
Respective electric drive motors () drive left and right drive wheels () having friction brakes, including an electromechanical service brake () and an auxiliary brake () mechanically biasing them to a braked state. An elongate handlebar () for user control is mounted via a pair of force-sensing couplings () including a resilient member () and a load sensor () sensing forces applied by a user to the handlebar and transmitting respective load signals. A controller () receives the load signals and controls a current applied to the electric drive motors () so as to amplify the force sensed by the force-sensing couplings and to generate a torque proportional to a force applied by the user to the handlebar and to actuate an electric release actuator of the auxiliary brake () when the force applied by the user to the handlebar exceeds a threshold.