Abstract: A drum rim includes inner and outer rim portions. The outer rim portion is smoothly tapered to provide comfort to the hands of the player. An inner rim portion is arranged to engage the drum skin at a position that has a diameter which is less than the central diameter of the drum wire.

Abstract: A percussion instrument is formed from a hollow cylindrical tube which is provided with a surrounding beaded net. The net is mounted by passing net end strands into a circumferential ring of radial boreholes adjacent each end of the tube and outward through the tube ends.

Abstract: A tambourine is fabricated from a single piece frame having two hinges which divide the frame into a central section and two end sections. As assembled the frame is bent at the hinges and curved so that the two end sections can be joined by a connecting member. The jingles are preferably mounted by grooves which intersect jingle slots and are arranged on opposite sides of the frame to retain the jingle mounting pin.

Abstract: A musical cow-bell is provided with a striking ridge of high impact plastic. The ridge provides versatility in playing, protection against damage to the bell or drumstricks and improved tone.

Abstract: A ventilated rack case for alternatively transporting and operating a rack mountable unit of electronic equipment includes an inner rectangular frame, which is open at the front and back, shock absorbing material, e.g. foam, surrounding the frame, and an outer cover over the foam. For ventilation, cutouts are provided in the foam and frame and a protective screen is secured in the openings. The cover includes front and back flaps for selectively closing the front and back openings of the frame. A top ventilation flap is configured to cooperate with the cutouts to provide ventilation. The flaps can be closed for storing and transporting the rack, and opened for use to allow access to the control panels and proper ventilation of the electronic equipment without removal from the case.

Abstract: A percussion instrument comprises an oblong plastic block having a generally rectangular block portion with a front face and top and bottom surfaces, and a flange extending outwardly from the sides and rear. An elongated slot in the front face extends rearwardly to the rear flange, and laterally between the side flanges. The block has a raised ridge on the top face adjacent the front face for striking. In addition, landings are formed in the flanges which, together with a cooperating bracket assembly, act as a means for mounting the block.