Patent Art of Leo Fender's Electric Guitar Tremolo device of 1956.
Leo Fender's synchronized tremolo, the device that introduced the term tremolo arm (U.S. Patent 2,741,146 filed in 1954, issued in 1956).
First released in 1954 on Fender's first legendary Stratocaster, the simple but effective design offers a greater range of pitch change and a better capability for up-bends. Somewhat confusingly, Fender labeled the arm as a "tremolo arm" rather than a "vibrato arm", conversely referring to the tremolo circuit on his amplifiers as "vibrato".
The Stratocaster "tremolo", often just called the "Strat trem", or also called the whammy bar, is the most copied vibrato system. Similar pattern units appear on many solid-body guitars by various makers. Its design has been the basis of the premium Fender tremolo known as the two-point synchronized tremolo, and also of the Floyd Rose locking tremolo. Both the original Stratocaster tremolo, sometimes called the "synchronous tremolo" and sometim...