Abstract: The subject of the invention is an engine that is actuated by a fluid under pressure, preferably water, and comprises one or more oscillating, connecting-rod assemblies (13), including a cylinder (14) and a piston (15), and at least one or more cranks (16) driven by the connecting-rod assemblies (13). For each connecting-rod assembly (13), a preferably stationary valve (20) controls the feed and the discharge of the pressure fluid to and from it, synchronically with the angular position of the corresponding crank (10), and acts as the pivot about which connecting-rod assembly (13) oscillates. The engine can be applied for producing mechanical work in any apparatus, for example in sprinklers, concrete mixers, apparatus for winding cables or garden hose reels, and so on, or for the production of electrical energy. The actuating fluid can be used, after its discharge from the engine, for purposes for which high pressure is not required.

Abstract: A static-fluid-pressure-driven rotary motor includes a casing, which defines a chamber having a fluid inlet and a fluid outlet, and at least one rotor assembly rotatably mounted within the casing. The rotor assembly includes a rotor, a plurality of barrier elements associated with, and extending outwards from, the rotor, and a resilient seal associated with at least an outer edge of each of the barrier elements. As the rotor turns about its axis of rotation, the outer edges of the barrier elements passing in proximity to a facing wall of the casing chamber against which the resilient seals for a sliding seal while accommodating variations in clearance between the outer edge of the barrier element and the facing wall of the casing.

Abstract: Systems and methods for recycling drain water, which exists substantially at atmospheric pressure, are presented. The systems and methods employ a venturi restriction, inserted into a water line, for creating a low-pressure zone in the water line, and feeding the drain water to the water line at the location of the low-pressure zone, thus causing the drain water to be drawn into the water line.

Abstract: A system for evenly winding a hose on a reel, is provided, using the hose as a belt for the transmission of the evening motion.

Abstract: A water-powered turbine motor includes a casing having a bottom drainage opening, and a rotor having a plurality of blades rotatably mounted within the casing. Associated with the casing is an inlet nozzle for connection to an external source of water to generate a stream of water directed towards the blades so as to rotate the rotor. A reservoir is deployed beneath the bottom drainage opening for receiving water draining from the casing. A drainage outlet is formed in the reservoir for allowing drainage of water from the reservoir to a remote drain.

Abstract: A hose-reel assembly includes a reel with foldable flange portions to allow compact shipping and storage in a pre-assembled state. The reel is rotatably mounted on a support frame which either stacks with similar frames or has selectively deployable legs to allow packaging of the assembly in a rectangular box of height less than the reel diameter.

Abstract: A hose-reel assembly includes a reel with foldable flange portions to allow compact shipping and storage in a pre-assembled state. The reel is rotatably mounted on a support frame which either stacks with similar frames or has selectively deployable legs to allow packaging of the assembly in a rectangular box of height less than the reel diameter.

Abstract: The subject of the invention is an engine that is actuated by a fluid under pressure, preferably water, and comprises one or more oscillating, connecting-rod assemblies (13), including a cylinder (14) and a piston (15), and at least one or more cranks (16) driven by the connecting-rod assemblies (13). For each connecting-rod assembly (13), a preferably stationary valve (20) controls the feed and the discharge of the pressure fluid to and from it, synchronically with the angular position of the corresponding crank (10), and acts as the pivot about which connecting-rod assembly (13) oscillates. The engine can be applied for producing mechanical work in any apparatus, for example in sprinklers, concrete mixers, apparatus for winding cables or garden hose reels, and so on, or for the production of electrical energy. The actuating fluid can be used, after its discharge from the engine, for purposes for which high pressure is not required.

Abstract: A water flow operated device for winding and/or unwinding a length of flexible material. The device includes a stationary element, a spool with a central axis rotatably engaged by the stationary element and a water flow operated mechanism engaged by the stationary element. The water flow operated mechanism serves to controllably rotate the spool. The water flow operated mechanism includes a water operated motor, a water inlet communicable with a household water source, a water outlet and a valve for controlling a flow of water through the mechanism.

Abstract: Ride-on toys and garden tools operated solely by household water pressure, a ride-on toy or a garden tool according to the invention includes (i) a stationary element; (ii) a movable element movably connected to the stationary element; (iii) water pressure operating means for moving the moveable element with respect to the stationary element; (iv) a water inlet for directing the household water into the operating means, the water inlet being in communication with a household water source; (v) a water outlet for directing the household water out from the operating means; and (vi) a valve for controlling the flow of the water through the operating means.