Company Filing History:
Years Active: 1987-1988
Title: LaMoyne W Durham: Innovator in Hydraulic Control Systems
Introduction
LaMoyne W Durham is a notable inventor based in Bartlett, Illinois, recognized for his contributions to hydraulic control systems. With a total of three patents to his name, Durham has made significant advancements in the field of automation and control technology.
Latest Patents
Durham's latest patents include an innovative operating system for a valve. This control system is designed for a hydraulic actuating system that utilizes a multi-phase stepping motor. The system features a driver that supplies and controls DC current through each of the motor windings, ensuring that no current is induced into the control winding from adjacent windings. The stepping motor precisely controls the rotation of an eccentric cam that engages an actuating plunger, which in turn actuates a control valve of the hydraulic system. The driver receives control signals from a computer programmed to calculate user input command signals indicative of the desired system condition. This allows for the generation of control signals that quickly achieve a rough approximation of the desired system condition. Once this approximation is reached, the computer generates new control signals based on feedback signals and system component characteristics to precisely achieve the desired condition. Additionally, the operating system includes a bearing arrangement rotatably connected about the eccentric cam, which engages the actuating plunger through a linkage that maintains contact between the plunger and the outer race of the bearing arrangement.
Another significant patent by Durham is the control circuitry for electric drives. Similar to his valve operating system, this control system is designed for a hydraulic actuating system with a multi-phase stepping motor. The driver and computer work together to achieve the desired system condition efficiently, utilizing a master processor and multiple slave processors to control various machine functions.
Career Highlights
Durham is currently employed at South Bend Lathe, Inc., where he continues to innovate and develop advanced control systems. His work has contributed to the efficiency and effectiveness of hydraulic systems in various applications.
Collaborations
Durham collaborates with fellow inventor Bengt S Backe, sharing insights and expertise in the field of hydraulic control systems.
Conclusion
LaMoyne W Durham's innovative work in hydraulic control systems has made a significant impact on the industry. His patents reflect a deep understanding of automation and control technology, showcasing his commitment to advancing engineering solutions.