Patent ID: 7749044
Filing Date: 2010-07-06
Classification: A63H,G10F

Abstract:
1. A manually operated air-driven music box, comprising: a) a rotatable drum cylinder to activate tone arms; b) a first propeller on one end of a drive axle and a second propeller on an opposite end of said drive axle to rotate said drive axle as said music box is moved through the air; c) a gear mechanism for said drive axle to rotate said drum cylinder in the same direction as said drive axle as said drive axle is rotated by said propellers; and d) said first propeller being constructed to rotate in a counterclockwise direction and said second propeller being constructed to rotate in a clockwise direction, wherein when said first propeller is moved through the air such that said first propeller provides the power to rotate said drive axle, said second propeller acts as a governor to maintain a relatively constant rate of rotation of said drive axle, and when said second propeller is moved through the air such that said second propeller provides the power to rotate said drive axle, said first propeller acts as a governor to maintain a relatively constant rate of rotation of said drive axle, thus producing a relatively constant tempo of music.