Company Filing History:
Years Active: 1985
Title: Dennis A. Luhn: Innovator in Engine Control and Voltage Regulation
Introduction
Dennis A. Luhn is a notable inventor based in Richfield, MN (US). He has made significant contributions to the fields of engine control systems and voltage regulation. With a total of 2 patents, Luhn's work reflects his commitment to innovation and engineering excellence.
Latest Patents
Luhn's latest patents include an "Engine Control Circuit" and a "Voltage Regulator." The Engine Control Circuit describes a control system for an internal combustion engine that allows the engine to be started and stopped while unloaded. This invention incorporates a mechanical linkage operated by a solenoid to control a valve within the engine, along with an electronic circuit that includes one or more time delay relays. The design aims to reduce or eliminate vibrations caused by the starting and stopping of a single-cylinder diesel engine. Several embodiments are detailed, including one that utilizes an integrated circuit timer and another that employs two time delay relays.
The Voltage Regulator patent is designed to control the output of an AC generator. It features a voltage control field-winding excitation control circuit that supplies direct current to the generator field in response to a driver. This driver operates based on a switching regulator, while a frequency sensing mechanism generates a voltage proportional to the generator's frequency. This frequency-sensitive voltage is combined with a reference voltage to drive an asynchronous switching regulator, which produces output voltage control signals to operate the driver. The design incorporates power MOSFETs to manage current flow to the generator field and includes features for loss of voltage and high current protection.
Career Highlights
Dennis A. Luhn is associated with McGraw-Edison Company, where he has contributed his expertise in engineering and innovation. His work has had a lasting impact on the development of control systems and voltage regulation technologies.
Collaborations
Luhn has collaborated with notable coworkers, including Mark H. Schultz and Daniel A. Norrick, who have also contributed to advancements in their respective fields.
Conclusion
Dennis A. Luhn's innovative patents in engine control and voltage regulation demonstrate his significant contributions to engineering. His work continues to influence the industry and inspire future innovations.