Abstract: Described is a stator for an axial flow electric machine comprising a toroidal core (2) made from ferromagnetic material and a plurality of windings (3) and teeth (4) angularly distributed on the core (2) in an alternating configuration. The teeth have, on at least one relative lateral surface, a shaped profile defining at least one gripping surface (12) such as to act in conjunction with a matrix of resin designed to stably press the teeth (4) on the core (2).

Abstract: In a stator section of an axial flux electric machine with liquid cooling system, a toroidal core having an inside cylindrical surface and an outside cylindrical surface coaxial with each other along a reference axis, is provided along its annular center line with a plurality of electrical conductor coils spaced from each other and each placed around the core and having a first, a second, a third and a fourth face. Each cooling duct section produces a movement of the liquid coolant from a first to a second base surface of the core and is located between faces of two consecutive coils. At least a face of each coil is adjacent to and in contact with at least one cooling duct section.

Abstract: Described is a stator for an axial flow electric machine comprising a toroidal core (2) made from ferromagnetic material and a plurality of windings (3) and teeth (4) angularly distributed on the core (2) in an alternating configuration. The teeth have, on at least one relative lateral surface, a shaped profile defining at least one gripping surface (12) such as to act in conjunction with a matrix of resin designed to stably press the teeth (4) on the core (2).

Abstract: A volumetric reciprocating compressor comprises an air compressing unit equipped with a plurality of cylinders adapted to receive reciprocating pistons, a motor for driving the compressing unit and having a shaft which rotates about a respective axis of rotation, a cooling unit comprising a fan assembly driven by the rotating shaft to produce an air flow for cooling the compressed air in the unit, the cylinders being located inside an axisymmetric housing casing and being angularly spaced from each other.

Abstract: In a stator section (1) of an axial flux electric machine with liquid cooling system, a toroidal core (2) having an inside cylindrical surface (20) and an outside cylindrical surface (21) coaxial with each other along a reference axis (22), is provided along its annular centre line (200) with a plurality of electrical conductor coils (4) spaced from each other and each placed around the core (2) with a first face of it (41) lying on the outside cylindrical surface (21), a second face of it (42) lying on the inside cylindrical surface (20) and a third and fourth face of it (43, 44) lying transversally to the first and second faces (41, 42). Each cooling duct section (30) of a plurality of cooling duct sections (30) produces a movement of the liquid coolant from a first base surface (25) of the core (2) to a second base surface (26) of the core (2) and is located between the two first faces (41) of two consecutive coils (4) or between the two second faces (42) of two consecutive coils (4).

Abstract: The portable air compressor (1) comprises an air pumping element (2), an electric motor for driving the pumping element (2), at least one tank (3) for storing the compressed air coming out of the pumping element (2), and a box-shaped container (5) for containing the pumping element (2), the electric motor and the tank (3).

Abstract: A reciprocating positive displacement compressor unit comprises a central body, a motor having a shaft which rotates about an axis of rotation, two cylinders, two pistons, each of which moves with alternating motion in a respective cylinder to compress the air contained in it, a first, axial fan for generating an air flow for cooling the compressor unit and a second, radial fan for circulating air inside the central body, the first, axial and second, radial fans both being driven by the shaft.

Abstract: In a portable compressor having a support frame, a compression device, a storage unit and at least one transportation handle, the frame has at least a first and second base to protect and/or support the compressor itself; the first and second base lie, respectively, on a first and second plane substantially at right angles to each other; and the first base has two opposite ends connected respectively to the second base and to the handle.

Abstract: In a portable compressor comprising a support frame, a compression device, a storage unit and at least one transportation handle, the frame has at least a first and second base to protect and/or support the compressor itself; the first and second base lie, respectively, on a first and second plane substantially at right angles to each other; and the first base has two opposite ends connected respectively to the second base and to the handle.