ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,410,809, issued on Sept. 9, was assigned to Saudi Arabian Oil Co. (Dhahran, Saudi Arabia).
"Breather tube for labyrinth seal chamber" was invented by Christopher Wrighton (Aberdeenshire, Great Britain) and Sakethraman Mahalingam (Aberdeenshire, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electrical submersible pumping assembly includes a motor, a pump connected to the motor by a shaft, and a labyrinth type seal section between the motor and pump. Hydrostatic pressure is communicated between the motor and pump across the seal section and through a breather tube in the seal section that is configured to restrict fluid communication fr...