Abstract: The present invention is directed to an apparatus for producing a water maze from walls of falling water that can be reconfigured to change the maze. In one embodiment, the apparatus is comprised of a plurality of spray bars that are each capable of producing a separate wall of falling water droplets and a plurality of water valves that are each associated with only one spray bar. The water valves can be used to define at least two different paths between the entrance and exit of the maze. The apparatus is also capable of being used to create interesting visual effects by projecting light/images on to multiple screens created by walls of falling water droplets.

Abstract: An oscillating sprinkler includes two adjustment plate rotatably mounted on a hollow tube of the body of the sprinkler and nozzles extend through the hollow tube and guide slots defined through the adjustment plates. Each of the two adjustment plates has two control members on two sides thereof so as to pivot the adjustment plate individually relative to the hollow tube. A top cover is mounted to the adjustment plates and has multiple guide holes, the nozzles extend through the guide holes.

Abstract: A liquid dispensing apparatus that provides for positional adjustment of multiple liquid dispensing modules. The liquid dispensing apparatus includes a flow metering device which provides a flow of a liquid to a plurality of discharge orifices and a spray head attachment comprising a stationary plate, at least one movable plate, and multiple liquid dispensing modules. Flexible liquid supply lines route the liquid from the discharge orifices to the liquid dispensing modules. Each movable plate carries at least one liquid dispensing module and is movable relative to the stationary plate for varying the relative positions of adjacent ones of the liquid dispensing modules. The flexible liquid supply lines conform to the positional adjustment of the movable plates. For dispensing heated liquids, the apparatus may further include a heated enclosure through which the liquid supply lines are routed in the fluid path between the discharge orifices and the liquid dispensing modules.

Abstract: A spray tube assembly including a spray tube mounted on the base of an oscillating sprinkler and oscillated by an oscillating control device, and an inner tube inserted into the spray tube and having two symmetrical sets of sector water stoppers mounted around the periphery, the sector water stoppers having respective peripheries extended to different angles, wherein turning the inner tube within the spray tube causes the sector water stoppers to alternatively stop or open the jet nozzles on the spray tubes.

Abstract: A surface array of electrically actuated pulsed microscopic fuel jets arranged on the interior surface of a mixing chamber injects fuel into air to form a combustible air-fuel mixture. The jets are solid state units with no moving parts, which can be actuated individually or in groups, and the volume of fuel injected per each jet's firing pulse can be varied by changing the characteristics of the electrical actuating pulse. Having no moving parts and being electrically activated, the jets are intrinsically suited to direct computer control. By providing a large number of such jets and a means of their direct electronic control via negative feedback, fine control of the operating parameters of the combustion engine and a high degree of redundancy to compensate for the failure of individual jets is made possible. The lack of moving parts and the absence of a high pressure fuel supply system provide significant advantages in performance, cost, reliability, and safety over the prior art in fuel injection.

Abstract: Method and apparatus for distributing pulverulent or particulate materials to a plurality of dispensing points, e.g., for sowing seeds or spreading fertilizer. A supply conduit carrying a main stream of material, for example, entrained in air, arrives at the center of a distributor head with a circular periphery. A deflector or distributor cone or a revolving nozzle distributes the material to a plurality of inlet ends of discharge hoses. Pairs of discharge hoses with their inlet ends located diametrically opposite each other are combined for supplying each dispensing point with a constant uniform flow rate irrespective of the inclination of the distributor head when operating on rough terrain.