ALEXANDRIA, Va., May 12 -- United States Patent no. 12,624,748, issued on May 12, was assigned to Liftwave Inc. (Somerville, Mass.).
"Expanding force electric linear actuator" was invented by Blake Sessions (Boston) and Toomas Sepp (Somerville, Mass.).
According to the abstract* released by the U.S. Patent & Trademark Office: "In general, this disclosure involves a pulley system that includes a plurality of fixed sheaves arranged to at least partially encircle an output shaft, a plurality of traveling sheaves coupled to the output shaft. The output shaft can be configured to pass through the fixed sheaves and translate along an axis of travel and the plurality of traveling sheaves can be arranged such that a geometric average of belt tens...