ALEXANDRIA, Va., March 12 -- United States Patent no. 12,247,646, issued on March 11, was assigned to ZHEJIANG JIECANG LINEAR MOTION TECHNOLOGY Co. LTD. (Shaoxing, China).
"Self-locking drive and linear actuator" was invented by Yujie Cen (Shaoxing, China) and Shiyi Tang (Shaoxing, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A self-locking drive, usable in a linear actuator, includes a housing and a drive shaft for outputting a driving force. An endcap is provided at an end portion of the housing. A self-locking mechanism configured to apply a self-locking force to the drive shaft is provided in the endcap. The self-locking mechanism includes a friction seat sleeved over the drive shaft and rotatabl...