ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,490,849, issued on Dec. 9, was assigned to KUONAO Co. LTD. (New Taipei, Taiwan).
"Static equilibrium adjusting system and method" was invented by Meili Cheng (New Taipei, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A static equilibrium adjusting system includes a bladder (10) and a regulation valve (20). An elastic restoration device (11) is arranged in the bladder (10) to support an external pressing force. The regulation valve (20) is in communication with the bladder (10) to provide an adjustable reverse-resisting force to resist an air pressure generated, in a direction toward the regulation valve (20), by the bladder (10). Through selectio...