Abstract: A diaphragm carburettor (1) for internal combustion engines, comprising: a carburettor body (2,2?) provided with a feed duct (3) of an air/fuel mixture to the engine, said duct (3) being intercepted by at least one butterfly valve (20); pumping means comprising a diaphragm pump (6) communicating on one side with the engine and on the other side with a fuel tank, said diaphragm pump (6) being driven by the pulses coming from the engine; metering means comprising a diaphragm meter (7) adapted to keep a first chamber (13) and a second chamber (12) separate, with said meter (7) interposed, said first chamber (13) being at environmental pressure, and said second chamber (12) communicating both with said diaphragm pump (6), on the side which communicates with the tank, through a line intercepted by a valve controlled by the meter (7) itself, and with said feed duct (3) of the mixture, where said pumping means and said metering means are integrally made on a single block (5) fixed directly on one side of the carb

Abstract: An engagement system (1) for removably connecting gardening tools and similar to a power unit comprising a motor, said system comprising a base element (2) suitable for being fixed to a crankcase housing the drive motor, a fastening element (3) of a tool that can be actuated by the shaft of said motor, suitable for coupling with the base element (2), where said elements (2, 3) are equipped with respective mutual engagement/disengagement means (5, 6) suitable for cooperating with each other to removably lock said elements (2, 3) in an engagement position, said base element (2) being equipped with at least one safety switch (19) actuated elastically by a rod (11) between a first position in which it is closed and prevents the operation of the drive motor, and a second position in which it is open and allows the operation of the drive motor, said second position only being obtainable when the fastening element (3) is engaged with the base element (2).

Abstract: A suction device for cleaning jobs comprising a bladed impeller (1) actuated by a motor and suitable for being housed inside a carcass provided with an inlet opening for an airflow and an outlet opening, where said impeller (1) comprises a first series of blades (2) and a second series of blades (3), which rotate firmly fixed together, coaxial to each other and distributed in a staggered manner, suitable for respectively generating an axial flow and a radial flow, said second series of blades (3) being arranged downstream of the first series of blades (2), with respect to the inlet opening, so that the air sucked in is transmitted from the first series of blades (2) to the second series of blades (3) before it reaches the outlet opening.

Abstract: A portable motorised device (1) for gardening tools comprising a crankcase (2), a motor (3) housed in the crankcase (2), a drive shaft (4) associated with the motor (4) and suitable for actuating a tool, control means (7) of said motor (3), where said crankcase (2) comprises two hollow substantially symmetrical portions (2a, 2b) divided vertically along a plane parallel to the rotation axis of the drive shaft (4), a grip (5; 55) with which the control means (7) of the motor are associated.