Truss rod tensioning mechanism
OwnerKevin Jason Nackardinventor
Life of this patent
Estimating the term…
Abstract
A stringed musical instrument has a neck having a truss rod embedded therein and a tensioning mechanism to adjust the tension of the truss bar. A truss rod is typically seated at the peghead and extends within the neck to the body of the stringed instrument. A tension adjustment mechanism may incorporate a slide assembly having a ramp that engages with an actuating screw that is accessible from the front surface of the stringed instrument. Adjustment of the screw changes the tension of the truss bar. A tension adjustment mechanism may incorporate a cam that interfaces with an actuating screw, wherein the cam interfaces with the truss bar to adjust tension.
Claims19
A truss rod tension mechanism for a stringed instrument comprising:
- a) a truss rod extending along a neck axis and within said neck of the stringed instrument from a body end to a peg head end;
- b) a tension adjustment mechanism configured within the stringed instrument and coupled with the body end of the truss rod and comprising:
- i) an adjustment screw having an interface end and an insert end;
- ii) a truss rod coupling feature;
- wherein an adjustment hole in the stringed instrument enables turning of the adjustment screw and changing of the tension of the truss rod through the truss rod coupling feature;
- and
- wherein the truss rod coupling feature comprises a ramp having an interface surface that is coupled with the body end of the truss rod, wherein the ramp is threaded onto the adjustment screw and wherein rotation of the adjustment screw moves the ramp to chance a tension of the truss rod.
A truss rod tension mechanism for a stringed instrument comprising:
- a) a truss rod extending along a neck axis and within said neck of the stringed instrument from a body end to a peg head end;
- b) a tension adjustment mechanism configured within the stringed instrument and coupled with the body end of the truss rod and comprising:
- i) an adjustment screw having an interface end and an insert end;
- ii) a truss rod coupling feature;
- wherein an adjustment hole in the stringed instrument enables turning of the adjustment screw and changing of the tension of the truss rod through the truss rod coupling feature;
- wherein the truss rod coupling feature comprises a cam assembly that is coupled with the body end of the truss rod, wherein the cam engages with the adjustment screw and wherein rotation of the adjustment screw rotates the cam to move the body end of the truss rod along the neck axis to change a tension of the truss rod;
- and
- wherein the cam assembly comprises a cam having a cam lever that interfaces with the insert end of the adjustment screw, wherein rotation of the adjustment screw rotates the cam about a cam axis.
Dependencies are inferred from the claim text.