Plectrum with a three-dimensional structure
Plectrum ( 1 ) for string musical instruments, comprising a body ( 2 ) divided in an attachment portion ( 5 ), a gripping portion ( 6 ) made with a rotation along its own longitudinal axis to modify in a desired manner the sliding and release features of the string of the instrument and/or to facilitate the gripping by the user.
1 . A plectrum ( 1 ; 1 ′; 1 ″; 1 ′″; 1 ″″; 1 ′″″; 1 ″″″; 1 ′″″″) for string musical instruments, comprising a body ( 2 ), said body ( 2 ) extending for a length (L) along a longitudinal axis (x) between a tip ( 3 ) and a rear end ( 7 ), divided into a portion aimed to get in contact with the strings of an instrument and a gripping portion, characterized in that said body ( 2 ) comprises at least one rotated portion ( 4 ) whose side profile ( 4 ′) is aimed to get in contact with the strings, wherein the side profile ( 4 ′) of the rotated portion ( 4 ) is without, angular points and extends along a torsion-completing twisted surface which connects, with a continuous twist, a first planar surface to a second planar surface, being intersected on the longitudinal axis (x) and rotated by an angle of rotation (α) with respect to each other, with an extension (P) of the twisted surface measured along the longitudinal axis (x) between a first connecting point being the tip of the plectrum and a second connecting point being another end of the twisted surface, wherein, given the ratio (P/L) between extension (P) and length (L), the angle of rotation (a) is equal or lower than 45° times said ratio (P/L), i.e. 45°·(P/L).
2 . The plectrum according to claim 1 , wherein the angle of rotation (α) may take either positive or negative values.
3 . The plectrum according to claim 1 , P exceeding L, and the gripping portion being included in the rotated portion.