Abstract: A matrix array spray head including a valve section for controlling nozzles is disclosed. The spray head is formed by a series of alternately stacked plates having channels formed in alternate plates for supplying either pressurized gaseous propellant or a composition to be applied by the spray head. Compositions appropriate for spraying with the spray head include paint powder, liquid paint, conformal coatings, flux, water and other materials and fluids which may be atomized when combined with a high pressure gaseous stream. Flow of the composition and gaseous stream may be controlled in the valve section by means of memory metal valves having memory metal valve elements that move in response to the application of electrical current controlled by a logic control. The computer logic control of the valves provides a spray head having a computer-addressable array of tiny spray nozzles.

Abstract: The large rotational inertia applied to a driveline component during normal driving conditions is simulated in a test stand that contains a component that driveably connects an input motor and an output motor. A computer repetitively executes an algorithm that produces a commanded torque signal which is supplied as a control signal to the motor drive of one of the electrical motors to produce an output within that motor equal to the commanded torque. The control system applies to the powertrain component under test an inertia that simulates the actual vehicle inertia. The target state of the system, when the vehicle inertia is applied, is completely defined from information known when the component being tested has substantially less inertia applied.

Abstract: A balancing mechanism for reducing the vibration of a piston type internal combustion engine having a crankshaft and a camshaft comprises one or more reciprocating balance weights driven by two rotating cams with at least one of said cams being driven by either said crankshaft or said camshaft.