ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,415,708, issued on Sept. 16, was assigned to TK Home Solutions B.V. (Krimpen aan den IJssel, Netherlands).
"Stairlift safety system" was invented by Paul Kasbergen (Capelle aan den IJssel, Netherlands), Cornelis Boxum (Delfgauw, Netherlands) and Bert Blokzijl (Krimpen aan den IJssel, Netherlands).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a safety system for a stairlift. The Safety system comprises a component for sending and receiving an electromagnetic signal that includes a light emitting device such as an LED and a light receiving device such as a photo resistor, an electromagnetic signal interrupter like a movable vane, a moveable ...