ALEXANDRIA, Va., July 16 -- United States Patent no. 12,667,749, issued on June 30, was assigned to Tonal Systems Inc. (San Francisco).
"Exercise machine line spool" was invented by Joseph Perry (San Jose, Calif.), David Jonathan Zimmer (Exeter, Calif.), Anya Richardson Quenon (San Francisco), David Mallard (Mill Valley, Calif.) and Colin Russell Parker (San Francisco).
According to the abstract* released by the U.S. Patent & Trademark Office: "A weight training machine comprises: a motor; a line that is tensioned by the motor; a spool that takes up the line, wherein the spool includes a flange wherein the flange defines a capture region for the line; and a line guide adjacent to the spool, wherein the line guide prevents the line from pe...