US Patent 7146764 Rattle cage fishing lure

Apparatus 10 discloses a fishing lure having a cage 16 that water 12 can move through with movable elements 20 therein which are free to move laterally and transversely within the case. When placed in a medium such as water 12, the beads 20 banging into each other and the cage 16 generate sound waves 22 that radiate from the lure, attracting game fish 14. The cage 16 can vary in shape, such as cylindrical or polygonal but preferably cylindrical. In addition, varying the materials used for the beads 20, such as glass and metal would cause the beads to vary an activity.