Joseph Francis Johnson

Title: Joseph Francis Johnson: Innovator in Circuit Breaker Technology

Introduction

Joseph Francis Johnson is a notable inventor based in Plainville, CT (US). He has made significant contributions to the field of electrical engineering, particularly in circuit breaker technology. With a total of 2 patents, Johnson's work has had a lasting impact on the industry.

Latest Patents

Johnson's latest patents include the Transformer Secondary Disconnect and Shorting Switch. This invention features an insulative body affixed to a switchboard, which mounts a pair of spring-biased, reciprocating, conductive plungers. These plungers are individually wired to each side of a neutral current transformer secondary winding. When a drawout circuit breaker is engaged, the plungers retract in response to engagement with breaker-mounted conductive pads, completing a circuit between the secondary winding and the breaker trip unit. Conversely, when the breaker is disengaged, the plungers extend, while plunger-mounted switch contacts connect the winding sides together through a shorting bar or a resistor.

Another significant patent is the Electric Circuit Breaker. This circuit breaker is designed for automated assembly and includes pairs of fixed and movable contacts. The movable contacts are carried by a carrier mounted for reciprocating movement within the breaker case. The operating and trip mechanism parts are mounted on a frame positioned in the case. A handle, slideably mounted by the case, actuates the operating mechanism to open and close circuit positions. Additionally, a fixture is utilized with the frame for calibrating the thermal trip setting and for partial assembly of the operating mechanism.

Career Highlights

Joseph Francis Johnson is currently employed at General Electric Company, where he continues to innovate and develop new technologies. His work has been instrumental in advancing the capabilities of electrical circuit breakers, making them more efficient and reliable.

Collaborations

Johnson has collaborated with Eldon B Heft, a fellow innovator in the field. Their combined expertise has contributed to the development of cutting-edge technologies in electrical engineering.

Conclusion

Joseph Francis Johnson's contributions to circuit breaker technology exemplify his dedication to innovation and engineering excellence. His patents reflect a commitment to improving electrical safety and efficiency in various applications.