US Patent Issued to Dreame Innovation Technology (Suzhou) on Dec. 9 for "Cleaning device, cleaning mechanism, sweeper and cleaning apparatus" (Chinese Inventors)

ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,490,878, issued on Dec. 9, was assigned to Dreame Innovation Technology (Suzhou) Co. Ltd. (Suzhou, China).

"Cleaning device, cleaning mechanism, sweeper and cleaning apparatus" was invented by Lei Zhang (Suzhou, China), Xiaofeng Yin (Suzhou, China), Yinghao Liu (Suzhou, China) and Chao Wang (Suzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A cleaning device and a sweeper, the cleaning device includes a driving module, which includes a lifting driver; a lifting module, which includes a first shaft sleeve and a second shaft sleeve, the first shaft sleeve is connected with a power output shaft of the lifting driver, a screw mechanism is formed b...