ALEXANDRIA, Va., July 16 -- United States Patent no. 12,358,755, issued on July 15, was assigned to Honeywell International Inc. (Charlotte, N.C.).
"Frustum-designed radar reflector for elevator" was invented by En Yi Chen (Charlotte, N.C.), Yang Lu (Charlotte, N.C.) and Ming Zhou Yan (Charlotte, N.C.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Various embodiments are directed to a radar reflector configured for radar-based distance measurements for determining a position of an elevator car within an elevator shaft. The radar reflector comprises three or more triangular panels defining a pyramidal frustum volume having a base plane and an upper plane that are parallel. The pyramidal frustum volume is conf...