Percussion instrument, drumhead for percussion instrument, mold for manufacture of drumhead, and manufacturing method of drumhead
AssigneeRoland Corporation
InventorsKIYOSHI YOSHINO, HIKARU YASUNO
Life of this patent
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Abstract
A percussion instrument includes: a cylindrical shell portion having an open upper surface side; and a drumhead stretched to be installed on the upper surface side of the shell portion, wherein the drumhead includes: a membrane formed of a membranous material, having a struck head portion configured as a striking face to be struck by a performer and an outer periphery located on an outer circumferential side of the struck head portion; and an annular frame formed of a resin material and having the outer periphery of the membrane fixed thereto, and the drumhead is integrally formed by the membrane and the frame by injection molding.
Claims17
A drumhead for a percussion instrument comprising:
- a membrane formed of a membranous material, comprising
- a struck head portion configured as a striking face to be struck by a performer;
- and
- an outer periphery located on an outer circumferential side of the struck head portion;
- and
- an annular frame formed of a resin material by injecting the resin material that has been melted into a mold and hardening the resin material,
- wherein the outer periphery of the membrane is fixed on the frame, the membrane and the frame are integrally formed, and
- wherein the resin material is thermoplastic resin such that the annular frame is released from the mold after the resin being hardened.
A percussion instrument, comprising
- a cylindrical shell portion having an open upper surface side;
- and
- a drumhead stretched to be installed on the upper surface side of the shell portion, wherein the drumhead comprises
- a membrane formed of a membranous material, comprising
- a struck head portion configured as a striking face to be struck by a performer;
- and
- an outer periphery located on an outer circumferential side of the struck head portion;
- an annular frame formed of a resin material, wherein the outer periphery of the membrane is fixed on the frame, the membrane and the frame are integrally formed by injection molding, and the membrane is formed by a mesh material, and wherein the resin material of the frame is excluded from entering the struck head portion of the drumhead;
- and
- a plurality of tightening bolts that fix the frame to the shell portion while imparting tension to the struck head portion and are threaded by external threads to be screwed into internal threads disposed on the shell portion or the frame, wherein
- the frame comprises a plurality of bolt holes that allow the tightening bolts to be inserted thereinto.
A drumhead for a percussion instrument comprising:
- a membrane formed of a membranous material, which is a mesh material, comprising a struck head portion configured as a striking face to be struck by a performer and an outer periphery located on an outer circumferential side of the struck head portion;
- and
- a frame formed of a resin material, wherein the outer periphery of the membrane is fixed on the frame, and the membrane and the frame are integrally formed, wherein the frame comprises:
- an inner circumferential portion, where the resin material enters holes of the mesh material of the membrane;
- and
- an outer circumferential portion, where the membrane is not formed.
Dependencies are inferred from the claim text.