Ted C Chang

Title: The Innovative Contributions of Ted C. Chang

Introduction

Ted C. Chang is a notable inventor based in Roanoke, Virginia, with a remarkable portfolio of nine patents. His work primarily focuses on advancements in fluid-activated tools, particularly paving breakers. Chang's innovative designs have significantly contributed to the efficiency and functionality of these tools in various applications.

Latest Patents

Among his latest patents is a valve assembly for a fluid-activated, percussive paving breaker. This unitary valve assembly features a valve chest with an outer sidewall that forms an internal valve chamber. It includes a reciprocal valve within the valve bore and a bottom plate that is permanently fastened to the outer sidewall. The design incorporates sealing seats for the valve and strategically positioned passageways that connect with high and low-pressure chambers of the paving breaker. Notably, the valve assembly is constructed from acetal resin for weight reduction.

Another significant patent by Chang is a system for lubricating and reciprocating a piston in a fluid-activated, percussive paving breaker. This system includes a unitary valve assembly positioned within a bore of the tool housing, featuring an oil reservoir for lubricating the piston. The valve assembly is securely retained by a combination of a throttle lever and a backhead plate bolted to the rear tool housing.

Career Highlights

Ted C. Chang is currently employed at Ingersoll Rand Company, where he continues to innovate and develop new technologies. His contributions to the field of fluid-activated tools have made a lasting impact on the industry.

Collaborations

Chang has collaborated with several talented individuals throughout his career, including Steven W. Bodell and Robert R. Kimberlin. These collaborations have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Ted C. Chang's inventive spirit and dedication to innovation have resulted in significant advancements in the field of fluid-activated tools. His patents reflect a commitment to improving functionality and efficiency in paving breakers, showcasing his valuable contributions to the industry.