Company Filing History:
9 out of 31,024 
1 out of 788 Years Active: 1976-1998
Title: The Innovations of Dennis C. Eckhardt
Introduction
Dennis C. Eckhardt is a notable inventor based in Saginaw, MI (US), recognized for his contributions to automotive technology. He holds a total of nine patents, showcasing his innovative spirit and technical expertise in the field. His work has significantly impacted the design and functionality of power steering systems and rotary encoders.
Latest Patents
One of Eckhardt's latest patents is for a closed center power steering gear. This invention features a spool shaft connected to the steering wheel of a motor vehicle, a pinion head linked to the steered wheels, and a control valve that regulates fluid flow between a fluid accumulator and a working chamber of a steering assist fluid motor. The design includes a poppet on the spool shaft that can block or permit flow, along with a cam and cam follower that work together to enhance steering assist pressure in response to applied torque. This innovative approach achieves a nonlinear relationship between boost pressure and applied torque, improving vehicle handling.
Another significant patent is for a rotary encoder with a neutral position detection capability. This device can detect the angular rotation of a rotating shaft and identify its neutral position without requiring multiple encoder wheels. It utilizes a magnetoresistive sensor positioned near a single multipole magnet ring attached to the steering wheel shaft. The sensor generates a sinusoidal signal as the shaft rotates, allowing for precise detection of the neutral position through a voltage irregularity in the output signal.
Career Highlights
Eckhardt has worked with prominent companies in the automotive industry, including GM Global Technology Operations LLC and Delco Electronics Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in automotive technology.
Collaborations
Throughout his career, Eckhardt has collaborated with talented individuals such as David W. Graber and Andrzej M. Pawlak. These partnerships have fostered a creative environment that has led to the development of groundbreaking inventions.
Conclusion
Dennis C. Eckhardt's contributions to the field of automotive technology through his patents and collaborations highlight his role as a significant inventor. His innovative designs continue to influence the industry and improve vehicle performance.