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US 2008/0184867 A1Published application
Drumstick with multiple tube structure
OwnerStephen J. Davis, Roberto Gazzara +3inventors
InventorsStephen J. Davis, Roberto Gazzara, Mauro Pinaffo, Mauro Pezzato, Michele Pozzobon
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Abstract
A drumstick is formed of multiple composite tubes bonded to one another along a common wall, wherein apertures are molded between the tubes to improve the stiffness, strength, resiliency, aerodynamics and comfort of the drumstick.
Claims39
A drumstick comprising:
- a. two or more hollow tubes having facing surfaces, wherein said facing surfaces are fused together along portions of their lengths to form an internal reinforcing wall;
- b. wherein the surfaces of said two or more tubes not facing the surface of another of said tubes forms a portion of the external surface of said drumstick.
A method of forming a drumstick comprising the steps of:
- a. forming two or more hollow tubes of an uncured composite material;
- b. inserting an inflatable bladder into each of said hollow tubes;
- c. placing said hollow tubes into a mold;
- d. inserting mold elements disposed between facing surfaces of said a hollow tubes at one or more locations to separate said facing surfaces;
- and
- e. heating said mold, while inflating said bladders, such that said facing surfaces of said hollow tubes fuse together except in the locations where said mold pins are located, and the non-facing surfaces of said hollow tubes assume the shape of the mold and cures.
3 more elements
Dependencies are inferred from the claim text.