US Patent Issued to INVENTIO on Nov. 3 for "Door system" (Swiss Inventor)

ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,780,611, issued on Nov. 3, was assigned to INVENTIO AG (Hergiswil, Switzerland).

"Door system" was invented by Jules Christen (Altdorf UR, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "An elevator door system has a shaft door, a car door, a car door drive and a door coupling that couples the car door to the shaft door. An electrically activated car door lock, locks and unlocks the car door in a closed position. The door coupling includes a contact body with a length dimension greater than a spacing between a pair of guide webs and a width dimension smaller than the guide web spacing. The contact body is arranged rotatably on the car door bet...