ALEXANDRIA, Va., June 6 -- United States Patent no. 12,280,986, issued on April 22, was assigned to AVIRE Ltd. (Berkshire, Great Britain).
"Elevator door sensor arrangement" was invented by David Kelly (Waikato, New Zealand).
According to the abstract* released by the U.S. Patent & Trademark Office: "An elevator door sensor arrangement including: a position sensor configured to determine a configuration of an elevator door of an elevator car; an auxiliary sensor configured to monitor for an object in a sensing region outside of the elevator car, the region being an approach to the elevator car; and a door sensor controller configured to output a signal to a door controller indicating that an object has been sensed by the auxiliary sensor ...