This inventor holds 1 USPTO granted patent. Top assignee: United Technologies Corporation. Active years: 1989.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1989
Title: John R. Barbic: Inventor of a Variable-Stiffness Oil Film Damper
Introduction
John R. Barbic is an inventor associated with Tequesta, Florida, and United Technologies Corporation. His work includes a patented approach to controlling the critical speed of a bearing-supported rotating shaft.
Latest Patents
Barbic is credited with 1 patent: “Variable Stiffness Oil Film Damper.” The invention controls a shaft’s critical speed by selecting the oil volume in a squeeze-film damper to provide a spring rate that combines with the mechanical spring rate to achieve the desired overall system rate. The patent describes making the oil’s spring effect effective at a predetermined volume higher than that used in previously known oil squeeze-film dampers.
Career Highlights
Barbic’s patent reflects work on vibration control and the dynamic behavior of rotating machinery. The disclosed damper design offers a way to adjust system stiffness through the selected volume of oil.
Collaborations
Barbic’s listed coworkers include David H. Hibner and Kurt L. Nichol. His company affiliation is United Technologies Corporation.
Conclusion
John R. Barbic’s patented variable-stiffness oil film damper addresses the control of critical speed in rotating shafts by combining oil-film and mechanical spring rates.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile