US Patent Issued on Dec. 16 for "Door operator device and sectional overhead door system with anti-pressure and anti-theft functions" (Taiwanese Inventor)

ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,817, issued on Dec. 16.

"Door operator device and sectional overhead door system with anti-pressure and anti-theft functions" was invented by Chung Hsien Hsieh (New Taipei, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a door operator device and sectional overhead door system with anti-pressure and anti-theft functions, principally having a small-tooth-difference reduction gear and a ratchet-locking device. An input end of the small-tooth-difference reduction gear is kinematically connected to an input shaft; an output end of the small-tooth-difference reduction gear is kinematically connected to a shaft; the...