Pitch changing apparatus for stringed instrument tremolo

Details Pitch changing apparatus for stringed instrument tremolo Pitch changing apparatus for stringed instrument tremolo

1993-05-21

1994-10-25

Shoop, Jr., William M.

Music

Instruments

Stringed

G10D 300

Patent

active

053591445

ABSTRACT:
A pitch changing apparatus, providing bi-stable operation within a tremolo system which produces two distinct pitches for selected strings. The apparatus includes a shifting element 56, which is engagable to introduce or remove a pre-determined thickness within a tremolo system, creating string tensions relative to chosen, distinct pitches. An established ratio of total string tension and opposing spring counter-tension acting upon a tremolo is maintained by a tension correcting mechanism 73. The tension correcting mechanism is manually rotated to adjustable stop positions of required spring counter-tension, thereby keeping all strings in tune under conditions of changed total string tension.

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patent: 5127298 (1992-07-01), Snape et al.
patent: 5194679 (1993-03-01), Cohen
patent: 5198601 (1993-03-01), McCabe

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