ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,773,792, issued on Oct. 27.
"Cyclic switching electric suction cup" was invented by Chin-hui Liao (Taichung City, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A cyclic switching electric suction cup is provided. The electric suction cup includes a suction member and an actuating member. The actuating member includes an air extraction motor, a power supply, a control panel and a locking sleeve. When an air chamber is in the non-vacuum mode, one end of the locking sleeve abuts against a first switch to activate the air extraction motor and perform air extraction. During the air extraction, the air in the locking sleeve is simultaneously extracted...