Abstract: Clamping devices particularly useful as pipe couplings comprise a pair of clamping segments interposed between the housing end face and an apertured cap rotationally mounted on the housing, the cap including cam surfaces effective, upon rotation of the cap, to displace the clamping segments radially inwardly to grip the pipe, or radially outwardly to release the pipe. In one embodiment, the clamping segments are of a circle having a radius of curvature larger than the pipe to be clamped. In other embodiments, the clamping segments are formed with inclined walls to define triangular spaces at their adjacent ends, which triangular spaces receive rollable elements adapted to be displaced inwardly, when the clamping segments are displaced outwardly to their released positions, to engage the pipe and thereby to assure its release from the clamping segments.

Abstract: A rod clamp particularly useful as a pipe coupling includes at least two coaxial members with aligned bores adapted to receive the pipe to be coupled, each member having an annular shoulder at least one of which is eccentric such that the members can be rotated with respect to the other to either clamp or release the pipe. In one described embodiment, the two coaxial members are a housing and an end cap, respectively. In a second described embodiment, the coaxial members are a plurality of clamping rings having eccentric openings which are receivable within a housing and are rotated by the housing end cap, the clamping rings being coupled to each other by lost-motion connections such that the more the housing end cap is rotated, the greater the number of clamping rings that become effective to clamp the pipe.

Abstract: A spraying device is described comprising a nozzle formed with an outlet orifice through which the fluid issues in the form of a jet, and a cup-shaped member having a thin wall defining an open end of slightly larger diameter than the outlet orifice. The cup-shaped member is floatingly mounted for lateral and axial movement with respect to the nozzle orifice such that the jet issuing therefrom always impinges the cup-shaped member within its open end. The device further includes limiting means limiting the floating movement of the cup-shaped member.

Abstract: A sprinkler is described comprising a nozzle formed with an axial bore having an outlet through which the liquid exits in the form of a jet, a spindle extending through the bore and having a smaller outer diameter than the diameter of the bore so as to be laterally movable within the bore, and a deflector mounted on the spindle and having a recess facing, and slightly larger than, the outlet end of the nozzle bore so as to be impinged by the jet issuing from the nozzle thereby to impart rapid lateral movements to the spindle. The deflector is eccentrically mounted on the spindle, and the recess is formed eccentrically of the deflector, such that the impacts of the spindle against the sides of the bore by its lateral movement within the bore impart a rotary movement to the deflector.

Abstract: A fluid flow control device particularly useful as a drip-irrigation emitter is described comprising a two-section housing in which a mounting section is adapted to be passed through the wall of a supply pipe with the housing main section disposed within the tube and the outer end of the mounting section open to the atmosphere. A disc is freely movable within the housing main section and includes a stem fixed to one face thereof and passing into the housing mounting section such as to provide a fluid passageway therebetween. The housing main section is formed with an opening facing the face of the disc to which the stem is fixed, the arrangement being such that when pressurized fluid enters the housing main section through the opening, the disc moves towards and away from the opening to control the flow of the fluid into the housing and thereby through the fluid passageway between the disc stem and the inner face of the housing mounting section.

Abstract: A rotary sprinkler is described comprising a nozzle formed with an axial bore, a spindle extending through the bore and including stops at its opposite ends, and a rotor floatingly mounted on the spindle for rotary and axial movement thereon by the liquid jet issuing from the nozzle bore, the spindle being also axially and laterally movable within the bore such that the rotation of the rotor by the jet self-centers it on the spindle and also self-centers the spindle in the nozzle bore.

Abstract: A mounting for a water irrigation device comprises a vertical post secured at one end to a ground stake and carrying at its opposite end a cylindrical horizontal socket for frictionally receiving the stem of a fitting adapted to mount the water irrigation device, the latter device being connected to a water supply conduit by a flexible tube having connectors at its opposite ends attachable to the water supply pipe and to the fitting.