Abstract: A piston pump, comprising: a main body (2); a head (3), sealingly associated with the main body (2) at a coupling surface (3a); a pumping chamber (4), at least one portion of which is afforded in the head (3); a piston (5), provided with a head (5a) that is sealingly slidable in the pumping chamber (4) along a longitudinal direction (X); a valve seat (6), afforded in the head (3), which has an access opening (6a) on the coupling surface (3a) and is placed in communication with an intake manifold (S), with a delivery manifold (D) and with the pumping chamber (4); a suction valve (7) and a delivery valve (8) arranged sealingly inside the valve seat (6); wherein the suction valve (7) is movable between an opening position, in which it enables communication between the intake manifold (S) and the pumping chamber (4), and a closing position, in which it prevents communication between the intake manifold (S) and the pumping chamber (4); and wherein the delivery valve (8) is movable between an opening position, in

Abstract: A wind turbine device comprising a base frame which supports a vertical axis wind operated rotor, the axis being associated to a user device and being contained in a matchingly-dimensioned cylindrical casing exhibiting two openings, respectively an inlet and an outlet, aligned perpendicular to the rotor axis, the casing being driven to rotate about the axis by a member sensitive to the direction of the wind, such that the inlet opening is always facing into the wind.

Abstract: An automated pile-raising machine for fabric, in which the fabric is advanced about at least one drum, in contact with alternatingly interspersed pile and counter-pile rotating cylinders cleaned by respective cleaning brushes, a timing control system including sensors is provided for coordinating operation of the cylinders and brushes.

Abstract: An extraction device comprises an inclinable scraper shaft driven in rotation along a first vertical axis of rotation, thereby extracting bulk products stored over a storage area having at least one evacuation opening. The extraction device comprises a support piece whose foundation is mounted to rotate above the evacuation opening along the first axis of rotation, defining a supporting base for the scraper shaft. The base is inclined by an angle .beta. with respect to the horizontal. The first driving member is provided to rotate the support piece and the scraper shaft about the first axis. The foundation of the scraper shaft is inclined with respect to the axis of the scraper shaft by an angle .alpha. complementary of the angle .beta. and is mounted to rotate on the base along a second axis of rotation perpendicular to said base.