ALEXANDRIA, Va., April 15 -- United States Patent no. 12,601,391, issued on April 14.
"Logarithmic hollow shaft speed reducer" was invented by Sorin Vasile Cora (Orange, Calif.) and Judit Ildiko Dan (Orange, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A logarithmic hollow shaft speed reducer comprising a compact, modular two-stage rotary system with independently selectable coupling paths. The first stage produces coaxial outputs directed to either the ring, sun, or carrier of a standalone second-stage differential planetary gear. This architecture enables multiple torque-speed modes-high-speed/low-torque, balanced, and high-torque/low-speed-without altering drive element configuration. The speed r...