Acoustic drum
OwnerTerry R. Thirioninventor
Life of this patent
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Abstract
A method and a drum made of a moldable material, such as fiberglass, in a cylindrical form and having a low friction material coating the inside thereof and having a sound opening and baffle formed in the cylinder, for enhancement of resonance. The cylindrical drum is made through the utilization of the low friction material on the interior of fiberglass, and the two are bonded together because of the use of a paper on which the low friction material is a coating.
Claims2
In an acoustic drum consisting of a hollow cylindrical body having a single cylindrical opening extending along the longitudinal axis of said cylindrical body, a percussion drum head extending over one end of said cylindrical body, the end of said cylindrical body opposite said one end being completely open and being defined by a teriminal edge on said cylindrical body, the improvement comprising said cylindrical body having only one elongated opening extending diametrically therethrough and at a location spaced from said terminal edge for the passage of sound waves through said opening, and the elongated axis of said elongated opening extending along the circumference of said cylindrical body for only a minor fraction of the total length of said circumference, to thereby have the sound waves which pass through said elongated opening be directed only transverse to said longitudinal axis of said cylindrical body, and a baffle affixed to the interior of said cylindrical body and extending at an obtuse angle to said longitudinal axis and having a face directed toward said elongated opening for deflecting sound waves from said drum head and through said elongated opening.
Dependencies are inferred from the claim text.