Abstract: The control unit comprises a hollow external casing, an internal bolt rotatable in an internal cavity of said external casing to close and alternately to place in communication with a plurality of different transversal outlets a water inlet obtained axially in said bolt, a reversible electric motor for the rotation of said bolt, a cam element rotatable together with said bolt, and a plurality of electric limit switches co-operating with said cam element. An electronic control circuit with programmable times is provided to operate said electric motor in one direction or the other and up to the engagement of said cam element with one predetermined of said limit switches for the consequent displacement of the bolt in a position of closing said axial inlet or of placing it in communication with one of said transversal outlets. Electric batteries supply power to said electronic circuit and to said electric motor.

Abstract: The fitting element is constituted by a male element, with a hollow cylindrical tang having a plurality of ribs, arranged axially and protruding in a radial direction, and by a female element, essentially constituted by a hollow cylidrical casing suitable for receiving tang of male element. On the inside wall of female element there is obtained a plurality of grooves suitable for receiving by axial sliding the corresponding ribs; each of said grooves is flanked by a lateral seat, which receives one of said ribs following the rotation, sebsequent to the axial sliding, of male element.

Abstract: A spray gun having a liquid delivery pipe provided with a nozzle openable by an axially movable control member which plugs an axial hole, has an adjustable diffusing member arranged downstream of the nozzle. The diffusing member has a pair of flexible parallel tangs integrally extending forward from the nozzle and a hollow sleeve arranged rotatably to incline the tangs at a selected angle, i.e., at a greater or lesser distance from one another than the diameter of the axial hole. The tangs each have a protruding tooth engaging in a spiral arc in the tightening sleeve collar, whereby rotation of the tightening sleeve collar moves the tangs toward or away from one another, up to extremities of the spiral arcs.

Abstract: A vascular access device includes a case having a first connection structured to couple with an end of a cut blood vessel such as an artery, a second connection structured to couple with an end of a cut blood vessel such as a vein, and access ports for removal means and admission means to be connected into the blood vessels. A valve is arranged in a rotating manner with two positions defining two independent passages. In a first position the valve establishes connection between the first connection and one of the access ports and between the second connection and the other of the access ports, respectively. The first position is apt for performance of a blood purification treatment. In a second position of the valve, one of the passages establishes mutual connection between the connections and the other of the passages establishes mutual connection between the access ports.

Abstract: The joint is formed of two parts coupled with a variable angle. The two joint parts have coupling surfaces traversed by a rotation pin disposed perpendicularly to the longitudinal direction of the joint. Respective toothed crowns of the two coupling surfaces describe predetermined variable angular positions of the two joint parts. A seal with two concentric rings is placed between said coupling surfaces.

Abstract: A single body of plastic material has three converging coplanar radial arms and a perpendicular central hole. Each arm has an axial seat with a blind bottom to receive one end of the tubular structure and means for locking said end. The central hole is designed to receive a rotation hub.

Abstract: In a body in the form of a half-shell with a tubular handle, there is housed in a revolving manner a support plate for rotating bristles around which are placed fixed bristles. The support plate is surrounded by a ring gear which engages with a gear of smaller diameter arranged integrally and coaxially with a turbine impeller driven by water supplied through the handle.

Abstract: A fixed casing and a rotatable drum define an annular housing, in which a flexible pipe can be wound. The annular housing is provided with an inner opening for the passage of one end of the pipe and with an outer opening for extraction of the other end of the pipe. The casing and the drum are rotatably connected by a hollow axial pin shaped as a pipe fitting and suitable for connection, on one side, to said one end of the pipe and, on the other side, to a further pipe for connection to a water supply.

Abstract: A swivel arm irrigator includes a tubular swivel arm with radial bores and a support structure formed by two straight metal arms parallel to the axis of rotation of the swivel arm and by two substantially triangular side pieces disposed at the ends of the swivel arm and the metal arms. The ends of the straight metal arms are extractably housed in corresponding seats of the side pieces.

Abstract: A pistol for dispensing a watering liquid to plants and the like has a crenellated pistol grip portion, the crenellations whereof are a latching member for a swinging pawl which is actuated by a handle, an upper projecting portion of said handle having also toothed members and a resilient nature so as to engage corresponding latching portions of a shutter stem adapted to throttle the water jet emerging from said pistol and straighten it.

Abstract: The female element includes male-element locking teeth and locking-teeth thrusting means formed as single body of a resiliently flexible material, with which there cooperates a retaining ring which is able to cause movement of the teeth to a releasing position.