Richard C Green

Title: Innovations by Richard C. Green

Introduction

Richard C. Green is an accomplished inventor based in Hatboro, PA (US). He has made significant contributions to the field of engineering, particularly in the development of advanced mechanical and electrical systems. With a total of 2 patents, his work showcases a blend of creativity and technical expertise.

Latest Patents

One of Richard's latest inventions is the cam-actuated thread tapper. This electronic thread tapper features a cam-operated feed mechanism that drives the tap carriage rigidly in the advance direction only. It employs separate force means to move the carriage in the retract direction when the tap is withdrawn from the work material. The spindle and feed motors operate separately but are cycle-coordinated during a dwell period between tapping strokes. This design allows for sensitive detection of fault conditions, such as a worn tap or workpiece material defects, by measuring any position error developed between the spindle and feed positions.

Another notable patent is the 12-step commutation device for an electric motor. This innovation achieves 12-step commutation in a brushless DC motor through six shaft-mounted commutation sensors and circuitry. This setup allows for inexpensive shaft-angle decoding for coil excitation. The Hall sensors are arranged in two sets to produce the desired switching signals, enabling efficient motor operation. A further refinement includes current modulation to the field coils to equalize the torque output of alternate steps.

Career Highlights

Richard C. Green is currently associated with Penn Engineering & Manufacturing Corporation, where he continues to innovate and develop new technologies. His work has had a lasting impact on the engineering community, particularly in the areas of automation and motor control.

Collaborations

Richard has collaborated with notable coworkers, including Howard F. Hendricks and Glen J. Pierson, contributing to a dynamic and innovative work environment.

Conclusion

Richard C. Green's contributions to engineering through his patents reflect his dedication to innovation and problem-solving. His inventions not only enhance existing technologies but also pave the way for future advancements in the field.