Roberto Zafferri

Title: The Innovative Mind of Roberto Zafferri

Introduction

Roberto Zafferri is a notable inventor based in Lugano, Switzerland. He has made significant contributions to the field of electromagnetic motors, holding a total of four patents. His work showcases a blend of creativity and technical expertise, making him a prominent figure in the realm of innovations.

Latest Patents

One of Zafferri's latest patents is an electromagnetic motor rotatable in either direction. This innovative stepping motor features a stator with an armature shaped like an isosceles trapezoid, which includes a central gap and three pole faces. The rotor is equipped with a permanent magnet, while the stator contains two coils. One coil is positioned between a pole face opposite the gap and one of the other two pole faces, while the second coil is located between the pole face opposite the gap and the other of the two pole faces. When current flows through the coils, the rotor experiences magnetic fields that are oblique to each other and symmetrical with respect to the rotor's diameter. The direction of the coil currents determines the orientation of these fields. This arrangement allows for the creation of a resultant magnetic field that can extend in any of four different directions, depending on the current's direction. By appropriately commutating the currents, the resultant magnetic field can rotate in either direction, enabling the rotor to move accordingly. This design ensures that the rotor consistently rotates in the desired direction, even if a rotational step is missed or if it makes an extra step.

Career Highlights

Zafferri's career is marked by his dedication to advancing motor technology. His innovative designs have not only contributed to the efficiency of electromagnetic motors but have also paved the way for future developments in the field. His work at Ebauches S.a. has allowed him to collaborate with other talented engineers and inventors, further enhancing his contributions to the industry.

Collaborations

Some of Zafferri's notable coworkers include Claude Laesser and Jean Depery. Their collaborative efforts have fostered an environment of innovation and creativity, leading to the development of groundbreaking technologies.

Conclusion

Roberto Zafferri's inventive spirit and technical prowess have made a lasting impact on the field of electromagnetic motors. His patents reflect a deep understanding of motor mechanics and a commitment to innovation. Through his work, Zafferri continues to inspire future generations