ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,521,594, issued on Jan. 13, was assigned to Core Health & Fitness LLC (Vancouver, Wash.).

"Pilates reformer" was invented by Ken Duong (Stanton, Calif.) and Kevin Corbalis (Tustin, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed herein is an exercise machine that includes an elongated frame. The exercise machine includes a moveable carriage slidably coupled to the elongated frame. The exercise machine includes a spring support rod slidably coupled with the elongated frame and selectively positionable by a handle. The exercise machine includes at least one resistive member coupled at a first end with the spring support rod and at a second...