Patent ID: 7629521
Filing Date: 2009-12-08
Classification: G10D

Abstract:
1. A truss system, contained in a neck of a stringed musical instrument for independent adjustment and control with regard to curvature in two separate regions of the neck and the associated fingerboard/fretboard, adjustably deployable in one direction for reduction of concave curvature and in an opposite direction for reduction of convex curvature, particularly directed to localized adjustment with regard to asymmetric neck curvature in either direction in different sections of the neck, the truss system comprising: a rigid truss located within a truss channel disposed lengthwise within the neck generally parallel to the fingerboard/fretboard, said rigid truss being fastened to the neck in a longitudinally secure manner by truss-to-neck fastening means at a designated truss-to-neck fastening location defining a boundary between first and second adjacent sections of said neck; first bidirectional truss force adjustment means, located in a first end region of said truss, made and arranged to apply force to the first neck section via the first section of said truss in a manner to (1) place the first section of said truss in tension and thus apply adjustable force to the first neck section in a location and direction that modifies curvature in the first neck section in a first direction when said adjustment means is adjusted in a first direction, and (2) place the first section of said truss in compression and thus apply adjustable force to the first neck section in an opposite direction that modifies curvature in the first neck section in a second and opposite direction when said adjustment means is adjusted in a second and opposite direction; and second bidirectional truss force adjustment means, located in a second end region of said truss, made and arranged to apply force to the second neck section via the second section of said truss in a manner to (1) place the second section of said truss in tension and thus apply adjustable force to the second neck section in a location and direction that modifies curvature in the second neck section in a first direction when said adjustment means is adjusted in a first direction, and (2) place the second section of said truss in compression and thus apply adjustable force to the second neck section in an opposite direction that modifies curvature in the second neck section in a second and opposite direction when said adjustment means is adjusted in a second and opposite direction.