This inventor holds 2 USPTO granted patents. Top assignee: General Electric Company. Active years: 1977-1979.
Location History:
- Lenox, MA (US) (1977)
- Pittsfield, MA (US) (1979)
Company Filing History:
Years Active: 1977-1979
Title: Innovations by Hans R Fehlmann
Introduction
Hans R Fehlmann is a notable inventor based in Lenox, MA (US). He has made significant contributions to the field of voltage regulation, holding 2 patents that showcase his innovative approach to electrical engineering.
Latest Patents
One of his latest patents is a voltage regulator providing a wide range of voltage regulation. This invention is particularly useful in process control applications. The regulator features an extra bushing connected to the exciting winding, allowing for the connection of two or more regulators in parallel with their exciting windings and in series with their series windings. This design enables a desired wide range of regulation. Additionally, the invention includes a selector switch that allows for the interchange of regulators operating at the top of the regulating range, thereby alternating the tap-changing duty among various regulators. Automatic operation of the regulators is also disclosed in this patent.
Another significant patent by Fehlmann is the first house protector for voltage regulators and similar devices. This control circuit limits the output voltage of a voltage regulator to a safe level for consumers connected nearby. The output voltage is measured and compared to a reference level. If the voltage exceeds a preset threshold, the circuit is energized to prevent further tap changes that would increase the output voltage. A time delay feature is included to avoid immediate de-energization when the voltage drops below the preset level. In cases of line fluctuations causing voltage increases, the circuit will initiate a tap change to reduce the output voltage.
Career Highlights
Hans R Fehlmann has had a distinguished career at General Electric Company, where he has applied his expertise in electrical engineering to develop innovative solutions in voltage regulation.
Collaborations
Throughout his career, Fehlmann has collaborated with notable colleagues, including Robert H Brennan and Richard D Blackburn. Their combined efforts have contributed to advancements in the field of electrical engineering.
Conclusion
Hans R Fehlmann's contributions to voltage regulation through his patents reflect his innovative spirit and dedication to improving electrical systems. His work continues to influence the industry and enhance the safety and efficiency of voltage regulation technologies.