Abstract: Permanent magnets are mounted onto a punch, wherein the punch and associated magnets are fitted into a die which is then filled with a mixture of metal powder and thermosetting resin, in order to obtain, in a single operation, a stator having the permanent magnets embedded therein and being, integral with the body of a reduction unit connected to the motor.

Abstract: A machine for making coffee has a cylindrical chamber in which the head walls are made up of two pistons mounted on circulating ball screw actuators. Once the coffee powder is put into the chamber, the pistons are brought together to exert pressure, after which hot water is introduced to make the infusion. A motor for one of the actuators is in a lower casing on which the chamber is directly mounted for compact construction.

Abstract: The invention is a pump for coffee machines which simultaneously carries out the functions of water measurer and heater.The pump consists of a cylinder with a piston inside which sucks the water from a tank and directs it towards the devices it serves, and in which there are electronic devices for the control of the run of the piston and the consequent measurement of the water. The piston is moved by a piston rod which is externally threaded and forms part of a circulating ball actuator.Heating takes place by way of a resistance coiled around the cylinder jacket with the whole in turn enveloped by an insulating covering.

Abstract: A linear screw and/or circulating ball actuator comprises a nut in which there is a return duct for the balls, closed by two head walls in which there are passages which connect the duct to the helicoidal groove, and in which both the nut and the head walls are sintered.