Abstract: A cymbal having a plurality of openings where at least a portion of the material removed from the plurality of openings is maintained on the cymbal.

Abstract: An acoustic/electronic drum assembly comprising a mesh batter drumhead comprising a mesh membrane and an annular ring, a resonant drumhead comprising an acoustic membrane and an annular ring, the acoustic membrane capable of creating acoustic sound in response to a force applied to the mesh batter drumhead, an annular shell member for maintaining the mesh batter drumhead in fixed relation to the resonant drumhead, and a pick-up acoustically coupled to at least the resonant drumhead for picking up the acoustic sound and creating an electrical signal.

Abstract: A drumhead assembly comprising a drumhead membrane fixed within an annular ring and a tensioning ring for tensioning the membrane, located within the annular ring and against the drumhead membrane, comprising a cylindrical rod formed in a circular, flat configuration and a tensioning member for maintaining the tensioning ring in a pre-tensioned configuration. The tensioning member can be adjustable, as in the form of a turnbuckle, so as to vary the diameter of the tensioning ring, or fixed, as in the form of a spacer, so as to maintain the tensioning ring at a predetermined diameter.

Abstract: A practice drumhead assembly including a mesh membrane held in substantially fixed relation to an acoustic membrane. The assembly preferably includes an annular tensioning ring for tensioning the mesh membrane, and an engagement member for substantially fixing the mesh membrane relative to the acoustic membrane. The tensioning ring includes a cylindrical rod with a turnbuckle that is rotated to increase the diameter of the tensioning ring.

Abstract: A drumhead comprising a mesh membrane having a bottom surface and a damper contacting at least a portion of the bottom surface for improved rebound. Also, a practice drumhead assembly including the mesh membrane with a damper in contact with at least a portion of the bottom surface, held in substantially fixed relation to an acoustic membrane. The assembly preferably includes an annular tensioning ring for tensioning the mesh membrane, and an engagement member for substantially fixing the mesh membrane relative to the acoustic membrane. The tensioning ring includes a cylindrical rod with a turnbuckle that is rotated to increase the diameter of the tensioning ring.

Abstract: A musical drum in which an inflatable bladder is employed to regulate the tension on the drum head.

Abstract: Exercising apparatus includes a reservoir unit for receiving and dispensing fluid. An arm exercising unit includes at least two hollow paddles with fluid. Each of the hollow paddles may be connected to the reservoir unit by a flexible feedline and return line. A pump may pump fluid from the reservoir unit to each of said hollow paddles via said feedline. A return mechanism may allow flow of the fluid from the hollow paddles to the reservoir unit via the return line.

Abstract: A damped percussion instrument has a vibratable surface. A damping gel patch is attached to the surface.

Abstract: There is a gel drumhead mechanically coupled to an mechanoelectrical transducer. The gel drumhead is constructed and arranged to present substantially the same resistive forces to drum sticks when struck presented by an acoustic drum correspondingly struck.

Abstract: An electroacoustical drum has a drum shell and a drum head having an outside surface and an inside surface. A fastening assembly secures the drum head to the drum shell with the drum head in tension. A transducer has a vibratable surface, so that vibration of the vibratable surface produces a corresponding electrical signal from the voice coil. Striking the outer surface of the drum head with a drumstick produces a corresponding electrical signal from the transducer, while allowing a musician striking the drum head outer surface with the drumsticks to perceive substantially the same feel perceived by correspondingly striking an acoustic drum.