ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,521,588, issued on Jan. 13.
"Exercise apparatus using bidirectional adaptive resistance" was invented by Marius Popescu (Livermore, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed exercise machines provide adaptive resistance in both directions of cable or flexible member movement. Perceived or felt resistance increases in response to the effort and/or speed of movement exerted by a user. During exercise, a user may become fatigued making further movement or weight support unwanted. With the disclosed embodiments, a user may simply stop their effort and the resistance and movement of the machine will stop. There are no plates or physical...