Abstract: An abrasive tool comprising of a base portion (2), having a foam layer (3) affixed to the abrasive tool base portion, and a plastic film layer (4) affixed, bonded or glued to the foam layer. This tool is adapted to receive an abrasive material layer (5) or sand paper or other abrasive material having a pressure sensitive adhesive applied to one side of the abrasive material, to allow said abrasive material to be stuck and affixed to the abrasive tool. The abrasive tool may be hand operated, or operated by electric power, air power, or other motive power.

Abstract: Electric Propulsion system supported by a special usable harness slinging from scuba divers, deep-sea divers or simple swimmers, advantageously fed by a sophisticated system of rechargeable batteries, inserted inside several united watertight containers between them. The innovative structure, allow to all specialized operators to move forward underwater even if the immersions will be made in depth and for prolonged for long time periods, through the use of a motorized propulsion module. Another characteristic of the system is that it will allow a user to move and be operated in complete freedom and under any condition.

Abstract: A pressure-fluid driven device for generating a reciprocating movement includes a first (5) and a second relatively movable part (3), wherein a working chamber (7) is intended to be alternatively pressurised and depressurised so as to drive the parts in a movement relative to each other when the working chamber is pressurised. A valve arrangement (8) is intended to control the fluid flow into as well as from the working chamber. The inlet into the working chamber (7) is separate from the discharge from the working chamber (7). The invention also concerns a valve arrangement and a pneumatic tool.

Abstract: The invention relates to a heading gas injection system (HGIS) direct injection system. The invention makes it possible to atomize fuel mixtures and fuels of all types and to directly inject them into the combustion chamber of a mixture-compressing, spark-ignition internal combustion engine of all designs. This is achieved by means of a heating element (10), a fuel injection nozzle (1) a temperature probe (5), electrical heating resistors (diodes) (2), an electromagnetic valve (3) and a pressure gauge (14). The control unit (8) is provided for controlling these individual components. This control unit (8) also has the task of ensuring that the inlet valve (4), with the flow meter (6), ensures an optimal pollutant-free and low-pollutant operation. A pollutant-free operation of an internal combustion engine can be ensured when using methanol, ethanol, water mixture, hereby signifying a zero pollutant emission.

Abstract: A musically resonant apparatus with continuously variable resonances and methods for increasing the tonal complexity and quality of live and recorded musical instruments utilizes the position of one or more movable resonators to determine the freely resonant dimensions of the resonators comprising the apparatus. The dimensions and materials of this apparatus are scaled and selected to resonate in one or more musically relevant frequency ranges for the instrument and musical situation it is to be used with. The apparatus is mechanically coupled to a microphonic or vibrationally sensitive component in the chain of equipment between a musician and the listener. The continuous adjustability of one or more resonators allows the user to easily select the best complimentary resonances. This improves an instrument's tonal complexity, and thus its tonal quality at the listener's ears quickly, easily, and economically without invasive techniques.

Abstract: A pneumatic particulate dispensing system having a hopper for storing particulate material, such as animal feed, fertilizers, pesticides and the like. The hopper is connected to a T-fitting which encloses a velocity tube. An air blowing unit is connected to the T-fitting and the velocity tube through an interchangeable adaptor allowing for a variety of air blowing units to be installed. An adjustable rotary valve extends into the interior of the hopper from the T-fitting allowing for a user to adjust the amount of particulate material to be dispensed adjacent the velocity tube. A discharge tube is connected to the T-fitting downstream of the velocity tube, wherein the discharge tube has a rotating elbow for allowing the user to adjust the dispensing direction. A variety of nozzles can be attached to the end of the discharge tube. A support frame having a hitch insert and cradles is used to support and transport the particulate dispensing system to remote locations.

Abstract: An emergency vehicle detection system for alerting a driver of an approaching emergency vehicle includes a sound signal-producing unit mounted on an emergency vehicle, a sound signal detection unit mounted on a non-emergency vehicle, and a display unit remotely located on the non-emergency vehicle. The sound signal-producing unit has a sound generator for producing and transmitting a sound signal. A switch is used for controlling the operation of the sound generator in combination with a siren. The sound signal detection unit has at least one sound transducer for detecting sound signals and producing an electric current upon detection of a signal. A signal comparator is connected to the sound transducers for comparing the currents from the transducers to preprogrammed patterns. If there is matching pattern, a signal output encoder connected to the signal comparator constructs an encoded signal and transmits the encoded signal to a remotely located display unit through a transmitter.