This inventor holds 5 USPTO granted patents. Top assignees: North American Philips Corporation, U.S. Philips Corporation. Active years: 1987-1998.
Company Filing History:
3 out of 950 
2 out of 14,087 
Years Active: 1987-1998
Title: The Innovations of Ping-Shih Wang
Introduction
Ping-Shih Wang is a notable inventor based in Cheshire, CT (US). He has made significant contributions to the field of electric motors, holding a total of 5 patents. His work focuses on improving motor efficiency and performance through innovative designs.
Latest Patents
Wang's latest patents include an electric motor having a stator and a rotor, which features an improved spindle motor specifically designed for hard-disc drives. This motor includes a cylindrical coil stator mounted on a plate and a permanent magnet rotor on a rotatable hub. The rotor generates a field perpendicular to the axis of rotation, enhancing its functionality. Additionally, the design incorporates a bell-shaped hub portion that surrounds the coil, supported by axial and radial hydrodynamic bearings. The use of a soft-iron sleeve-shaped yoke externally surrounding the coil configuration allows for a reduction in inductance, thereby improving the dynamic drive characteristics of the motor. The coil is formed by curved foil windings, eliminating winding slots and avoiding detent torques.
Another significant patent is for an electric motor with permanent-magnet excitation. This invention pertains to both inside-rotor and outside-rotor motors, featuring movable motor sections. The first section creates a multi-pole excitation field using permanent magnets, while the second section consists of a soft-iron yoke with pole teeth that carry excitation coils. This innovative design enhances the motor's efficiency and performance.
Career Highlights
Throughout his career, Ping-Shih Wang has worked with prominent companies such as North American Philips Corporation and U.S. Philips Corporation. His experience in these organizations has contributed to his expertise in electric motor technology.
Collaborations
Wang has collaborated with notable individuals in the field, including Bernd Ackermann and Jelm Franse. These partnerships have likely influenced his innovative approaches and advancements in motor design.
Conclusion
Ping-Shih Wang's contributions to electric motor technology through his patents and career experiences highlight his role as a significant inventor in the field. His innovative designs continue to impact the efficiency and performance of electric motors.