Abstract: A demultiplexer circuit is disclosed which can be used with a conventional neural stimulator to extend the number of electrodes which can be activated. The demultiplexer circuit, which is formed on a semiconductor substrate containing a power supply that provides all the dc electrical power for operation of the circuit, includes digital latches that receive and store addressing information from the neural stimulator one bit at a time. This addressing information is used to program one or more 1:2N demultiplexers in the demultiplexer circuit which then route neural stimulation signals from the neural stimulator to an electrode array which is connected to the outputs of the 1:2N demultiplexer. The demultiplexer circuit allows the number of individual electrodes in the electrode array to be increased by a factor of 2N with N generally being in a range of 2-4.

Abstract: A low energy high pressure screw valve having a valve body having an upper portion and a lower portion, said lower portion of said valve body defining an inlet flow passage and an outlet flow passage traversing said valve body to a valve seat, said upper portion of said valve body defining a cavity at said valve seat, a diaphragm restricting flow between said upper portion of said valve body and said lower portion, said diaphragm capable of engaging said valve seat to restrict fluid communication between said inlet passage and said outlet passage, a plunger within said cavity supporting said diaphragm, said plunger being capable of engaging said diaphragm with said valve seat at said inlet and outlet fluid passages, said plunger being in point contact with a drive screw having threads engaged with opposing threads within said upper portion of said valve body such engagement allowing motion of said drive screw within said valve body.

Abstract: The present invention describes a method and device for cleaning the components of an internal combustion engine. The device provides a single valve for regulating the flow and blend of air and cleaning fluid entering the combustion chamber of an internal combustion engine. The invention provides a novel device and process for cleaning mineral deposits from the surface of the combustion chamber, piston crown and intake ports, intake valves. The flow control valve is capable of regulating the flow of air and cleaning fluid into the combustion chamber of an internal combustion engine during the cleaning process. The device of the present invention connects two separate hoses to a flow control valve. The end of one of the hoses is placed within a reservoir of cleaning fluid. The end of the other hose is connected to vacuum port of an internal combustion engine.