Location History:
- Wilmington, MA (US) (1992)
- Derry, NH (US) (1995 - 1999)
Company Filing History:
Years Active: 1992-1999
Title: Innovations of Christopher W. Liessner
Introduction
Christopher W. Liessner is an accomplished inventor based in Derry, NH (US). He has made significant contributions to the field of technology, particularly in the development of advanced encoders. With a total of three patents to his name, Liessner's work showcases his innovative spirit and technical expertise.
Latest Patents
One of Liessner's latest patents is a magnetic encoder for sensing position and direction via a time and space. This magnetic encoder provides a uniform magnetic field that is time modulated at a carrier frequency and space modulated by a repetitive pattern of eddy-current conducting lands. The design allows for the detection of motion through a series connected pair of stationary coils, yielding a differential electrical signal representative of the conducting lands' movement.
Another notable patent is the light beam distance encoder. This encoder measures absolute distance over a linear path with high accuracy, achieving resolution of approximately 1-10 microns. It utilizes a high-frequency amplitude modulated light beam reflected by a reflector to determine the phase lag, providing an absolute measure of distance. The encoder's design incorporates advanced computational techniques to ensure precise measurements.
Career Highlights
Liessner is currently employed at Dynamics Research Corporation, where he continues to innovate and develop cutting-edge technologies. His work has significantly impacted the field of measurement and sensing technologies, making him a valuable asset to his organization.
Collaborations
Throughout his career, Liessner has collaborated with notable colleagues, including Sidney A. Wingate and John A. Sotir. These collaborations have further enriched his work and contributed to the success of various projects.
Conclusion
Christopher W. Liessner is a prominent inventor whose contributions to technology are evident through his patents and career achievements. His innovative designs in encoders demonstrate his commitment to advancing the field and improving measurement accuracy.