ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,780,605, issued on Nov. 3, was assigned to Otis Elevator Co. (Farmington, Conn.).
"Counterweight monitoring device" was invented by Anand Raghavendra Rao (Bangalore, India) and Joseph Crute (Cromwell, Conn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An illustrative example embodiment of a counterweight monitor device includes a boundary marker configured to be situated along a boundary of a counterweight space at a selected location along the counterweight path. A detector is configured for detecting a boundary marker change. The detector is configured to provide an output indicating a departure of any part of the counterweight from the counterweight...