Anthony Joseph Ajello

Title: Anthony Joseph Ajello and the Low-Profile Fluid Dynamic Bearing.

Introduction

Anthony Joseph Ajello is an inventor associated with Aptos, California, and Seagate Technology Incorporated. His patent work includes a design for a low-profile fluid dynamic bearing, an invention addressing the support and controlled rotation of a shaft within a sleeve.

Latest Patents

Ajello is credited with 1 patent: “Low Profile Fluid Dynamic Bearing.” The design uses grooves on the shaft or sleeve to create a journal-type fluid dynamic bearing that supports relative rotation. A grooved pattern on an axial end surface generates thrust, helping maintain a gap between the shaft end and a facing thrust plate or counterplate.

The patent also describes refinements for controlling the bearing’s spacing and stability. An asymmetrical journal-bearing arrangement can pump fluid toward the shaft end, while a magnet applies an axial force to counterbalance thrust. Cooperating shoulders on the hub and sleeve limit axial displacement and help prevent the shaft and sleeve assembly from separating.

Career Highlights

Ajello’s documented patent contribution concerns fluid dynamic bearing technology. The invention combines fluid pressure, magnetic force, and mechanical restraints to support rotation while managing axial spacing and movement.

Collaborations

Ajello’s listed coworkers include Klaus Dieter Kloeppel and Gregor Flores. The available information identifies these professional associations but does not specify their roles in the patent.

Conclusion

Anthony Joseph Ajello’s patent describes a coordinated bearing design that uses fluid dynamics, magnetic force, and mechanical features to support stable shaft rotation and control axial movement.