Location History:
- Sacramento, CA (US) (1981)
- Charlottesville, VA (US) (1978 - 1994)
- Ivy, VA (US) (1995)
Company Filing History:
2 out of 998 
5 out of 832,843 Years Active: 1978-1995
Title: David W Lewis: Innovator in Magnetic Bearing Technology
Introduction
David W Lewis is a prominent inventor based in Charlottesville, VA (US). He has made significant contributions to the field of energy storage and magnetic bearing technology. With a total of 7 patents to his name, Lewis has demonstrated a commitment to advancing engineering solutions that enhance efficiency and performance.
Latest Patents
Among his latest innovations is a flywheel storage system with improved magnetic bearings. This stationary flywheel energy storage system is designed to rotate in a horizontal orientation. It features a motor/generator where the rotor is positioned externally of the stator. The system utilizes magnetic bearings to suspend the rotor at each end, with each bearing comprising a single principal actuator that supports 80% to 99% of the gravity load. Additional minor actuators are included to manage the remaining load and compensate for dynamic unbalances.
Another notable patent involves magnetic bearings for pumps, compressors, and other rotating machinery. This invention features a rotor with a flexible shaft and a plurality of masses that include magnetic disks. The magnetic bearings are attached to the housing and work to support the rotor in both radial and axial directions. Bearing sensors measure the shaft position relative to each bearing face, allowing for variable control of magnetic bearing parameters to adjust stiffness and damping in response to sensor measurements.
Career Highlights
Throughout his career, David W Lewis has worked with various organizations, including the University of Virginia Patent Foundation. His work has focused on developing innovative solutions that address the challenges of energy storage and machinery efficiency.
Collaborations
Lewis has collaborated with notable individuals in his field, including Robert R Humphris, Jr and Eric H Maslen. These partnerships have contributed to the advancement of his projects and the successful development of his patents.
Conclusion
David W Lewis is a distinguished inventor whose work in magnetic bearing technology and energy storage systems has made a significant impact in engineering. His innovative patents reflect his dedication to improving technology for various applications.