This inventor holds 3 USPTO granted patents. Top assignee: Square D Company. Active years: 1982-1987.
Location History:
- Bayside, WI (US) (1982 - 1987)
- Milwaukee, WI (US) (1987)
Company Filing History:
Years Active: 1982-1987
Title: Richard J Graefe: Innovator in Electrical Engineering
Introduction
Richard J Graefe is a notable inventor based in Bayside, Wisconsin, who has made significant contributions to the field of electrical engineering. With a total of 3 patents to his name, Graefe has developed innovative solutions that enhance the functionality and efficiency of electrical systems.
Latest Patents
One of Graefe's latest inventions is the Electronic Delay Timer. This machine tool timing relay is designed to have immunity from electrical noise on a control signal. It features an oscillator capable of generating pulses at a predetermined frequency, along with a means for adjusting this frequency over a continuous range. The device includes a counter that counts the pulses and generates an output signal after a predetermined number of pulses are counted. Additionally, it has an optical isolator circuit that responds to the control signal, generating a light that initiates the counting process while isolating the counter from electrical noise. The output circuit operates an electrical contact based on the counter's output signal, ensuring precise timing control.
Another significant patent is the Reduced Voltage Starter with Voltage Ramp Control. This invention allows for the gradual starting of an electric motor by increasing the voltage applied to it. The reduced voltage starter controls the application of voltage derived from a line voltage to the motor using a voltage ramp acceleration control circuit. This circuit generates a ramp voltage with a predetermined rate of rise and senses when the motor is running at full speed, adjusting the ramp voltage accordingly. This innovation ensures that the motor starts smoothly and efficiently, reducing wear and tear.
Career Highlights
Richard J Graefe is currently employed at Square D Company, where he continues to apply his expertise in electrical engineering. His work has contributed to advancements in motor control and timing systems, making a lasting impact on the industry.
Collaborations
Throughout his career, Graefe has collaborated with notable colleagues, including Julian C Kampf and James T Libert. These partnerships have fostered innovation and the development of cutting-edge technologies in electrical engineering.
Conclusion
Richard J Graefe stands out as a prominent inventor whose work in electrical engineering has led to significant advancements. His patents reflect a commitment to innovation and efficiency in electrical systems, showcasing his valuable contributions to the field.