Abstract: This disclosure relates to a bass mallet percussion instrument which is physically compact as compared to previous instruments, where percussion bars are removeably fixed above a resonance box that is divided into a plurality of resonance spaces, and the resonance s spaces are delineated from each other by separating walls.

Abstract: A walkway having a series of fixed height corridor units and an inclined gangway unit at its forward end. The units are articulatingly connected and selectively collapsible. The gangway is selectively variable in height, being provided with elevating means at its front end, to permit docking at the raised door sill of the commuter aircraft.

Abstract: According to the present invention, there is provided a wastewater processing apparatus and method comprising a rotating filter thickener (20) receiving and filtering a wastewater mixture and producing a first filtrate output and a first sludge output, a screw press thickener (24) receiving the first sludge output and forming a final sludge output and a second filtrate output, a dissolved air flotator (46) receiving the first filtrate output from the rotating filter thickener (20) and producing a first solid output and a third filtrate output, a first conductor (10, 12, 29) for mixing incoming raw manure wastewater and the second filtrate output from the screw press thickener (24) to produce the wastewater mixture for input to the rotating filter thickener (20), and a second conductor (34) for branching off a part of the first filtrate output to a spray cleaner (38) for spraying the part of the first filtrate output onto the filtration disks (70) for their cleaning.

Abstract: According to an embodiment of the present invention, there is provided a remotely operated toy truck for loading and unloading a roll-on-roll-off dumpster, the truck comprising: a dumpster system including a ramp for raising and lowering in relation to the truck, and a means for moving the dumpster between a loaded position on the ramp and an unloaded position off the ramp; and an electronic system for receiving one or more remote control signals and transmitting the one or more signals to the dumpster system to control the positioning of the ramp and the means to move the dumpster between the loaded position and the unloaded position. The truck further comprises a chassis and a vehicular drive system.

Abstract: According to the present invention, in a plasma display discharge tube in which a plurality of stripe-like anode electrodes (11) and a plurality of stripe-like cathode electrodes (9) are arranged at a predetermined interval to be crossed each other, to thereby constitute an X-Y matrix electrode with a space at each of the crossing portions thereof as a pixel and a plurality of pixels are selectively excited according to an image to display an image, there is provided a plasma display discharge tube in which there are provided an AC type memory electrode (1) arranged opposite to the X-Y matrix electrode (9) and (11) common to all the pixels, and an AC type auxiliary electrode (5) in contact with the AC type memory electrode (1) through an insulating layer and supplying an electric power through a coupling capacitor formed between the same and the AC type memory electrode (1), wherein a memory discharge display is performed between the X-Y matrix electrode (9) and (11) and the AC type memory electrode (1).

Abstract: A bat, constructed generally of the shape, weight and material usually used and formed for the batter is provided so as to have a small diameter stream of light extended through the central axis from one end to the other. The formation of the light stream emitting out the knob end of the bat will allow the batter to correctly align the knob of the bat with the ball during the initial movement of a swing. The batter and his/her coach will then be able to determine if there are errors in the player's angular position of the bat relative to the ball.