ALEXANDRIA, Va., June 18 -- United States Patent no. 12,326,551, issued on June 10, was assigned to Nimax GmbH (Bavaria, Germany).
"Crayford focuser for astronomical telescopes" was invented by Pedro Manuel Ferreira da Silva Pereira (Palhaca, Portugal).
According to the abstract* released by the U.S. Patent & Trademark Office: "A Crayford focuser includes a body member having an inner wall defining a central channel. A first bearing holding structure extends outward from the inner wall and is open to the central channel at one end. A second bearing holding structure extends outward from the inner wall and is open to the central channel at one end. First and second bearing rails are removably held by the first bearing holding structure and...