Patent ID: 7608770
Filing Date: 2009-10-27
Classification: G10D

Abstract:
1. A variable adjustable spring return for a bass drum pedal, the pedal of the type having a driveshaft mounted on a frame for rotation in a positive direction from a rest position to an impact position on a longitudinal axis of the driveshaft, and a spring return assembly connected between the frame and the driveshaft to bias the driveshaft in a negative direction from the impact position towards the rest position, said spring return assembly including a spring with first and second ears at opposing ends, the first ear connected to the frame and the second ear connected to the driveshaft, the spring return comprising: a cam-shaped hub mounted on said driveshaft for rotation therewith, said hub having a peripheral edge that varies in radius, an upper peripheral portion of the hub having a radius less than a lower peripheral portion of the hub; said hub peripheral edge including a forward peripheral half and a rearward peripheral half; an elongated flexible belt having a first end connected to the upper peripheral portion of the hub forward peripheral half and a first run extending downwardly therefrom along the forward peripheral half of the hub; said belt having a second end connected to the upper peripheral portion of the hub rearward peripheral half and a second run extending downwardly therefrom along the rearward peripheral half of the hub; said belt first and second runs connected together and to a spring retention clip located below the lower peripheral portion of the hub; said spring second ear connected to the clip for movement with the clip on the belt.