Thunderline bolt on tremlo system

Details Thunderline bolt on tremlo system Thunderline bolt on tremlo system

2005-04-19

2010-10-26

Lockett, Kimberly R (Department: 2832)

Music

Instruments

Stringed

Reexamination Certificate

active

07820898

ABSTRACT:
A bolt on tremolo unit. The tremolo arm is depressed which rotates a shaft within a frame. The rotating shaft engages a conrod against a folded steel sheet. This forces it to tip thus lowering the the pitch of the strings. When the tremolo arm is released, the expansion springs pull against a shaft spring connecting hinge and return the tremolo to its original position. When the tremolo arm is pulled across the frame causing the adjustable tail piece to clear the frame, the shaft is free to rotate in the opposite direction. This raises the pitch. When the adjustable tail piece is returned to the stop block or plate the guitar returns to standard pitch.

REFERENCES:
patent: 4928564 (1990-05-01), Borisoff et al.
patent: 6034311 (2000-03-01), Fisher, IV
patent: 2001/0002570 (2001-06-01), McCabe
patent: 2004/0074373 (2004-04-01), Goto

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