1
Richard E Huff: Vibrato assembly and acoustic coupling system for stringed instruments. Limbach & Limbach, March 9, 1999: US05880383 (9 worldwide citation)

A vibrato assembly for stringed instruments makes slight and rapid changes in the pitch of the tone produced by a stringed instrument. The vibrato assemblies described herein use flexures to permit movement of an armature relative to a fixed base to produce variations in the tension of the strings a ...


2
Richard E Huff: Vibrato assembly and acoustic coupling system for stringed instruments. Saundra S Hand, February 11, 1997: US05602352 (1 worldwide citation)

An acoustic coupling plate extends from the bridge or vibrato to the neck of the instrument. It acoustically couples the strings, the neck, the instrument body, and either a bridge or a vibrato to alter the acoustic attenuation of the instrument and to reduce the amount of multipath distortion. When ...