ONE TOUCH DRUM TUNING SYSTEM

摘要

A cam operated drum tuning system which is rotatable clockwise and counterclockwise to tunes a musical drum. A cam ring mechanism employs multiple helical tracks. A removable radius plate and tool facilitates rotation. The tuning system may be attached directly to drum lugs, to a retrofit ring attached to the lugs, or to a full floating I or II framework which use edge or full floater rings, and/or adjustable pull rods to connect the top and/or bottom tuning systems so that nothing need contact the drum shell. Eccentric micro tuners adjust the rim rollers which ride on the inner hoop, which has a lip on the underside to add overlap. Elevators are used to raise and/or lower the cam ring to align it perpendicular to the bearing edge of the drum shell.

主权项

1. A drum tuning system and apparatus comprising:
an actuator ring system comprising three overlapping annular members, including a rotating actuator ring, an inner hoop and a cam ring, the actuator ring member to adjust the pitch of a musical drum when fitted near the open end of a drum shell; said rotating actuator ring being the largest in diameter of the three annular members and rotatable about the other two ring members to facilitate a camming action and having a cross section profile having a thicker mid-section tapering smaller at the top and the bottom; a multiplicity of evenly spaced vertical bosses projecting upward along the horizontal surface near its mid-section; said vertical bosses wider and thicker at the base tapering down smaller on the top and having holes for accepting inward facing rim rollers and axles; said rotating actuators lower tapered vertical wall having holes for accepting inward facing cam rollers and axles; wherein rotating movement of said rotating actuator ring simultaneously cause said rim rollers to bear down on an inner hoop while said cam rollers engage a cam ring to draw the inner hoop and cam ring closet together or move them further apart; and wherein said camming action alters the tension on the drum head when fitted over the open end of a drum shell thereby tuning the drum.