Company Filing History:
5 out of 390 
1 out of 832,812 Years Active: 1989-1993
Title: Douglas R Patriquin: Innovator in Torque Measurement Technology
Introduction
Douglas R Patriquin is a notable inventor based in Middlebury, Vermont, with a focus on innovative technologies related to torque measurement. He holds a total of 6 patents, showcasing his contributions to the field of engineering and measurement systems.
Latest Patents
One of his latest patents is titled "Method and apparatus for shaft torque measurement with temperature." This invention provides an apparatus and method for measuring the torque of a rotating shaft using a single sensor. The sensor processes a signal to yield a temperature-compensated value of the torque applied to the shaft. The design incorporates a magneto-optic material, such as a Faraday film, positioned adjacent to the rotating shaft, which is subjected to a saturating magnetic field. The modulation of the magnetic field by ferrous elements around the shaft allows for the measurement of torque through changes in the optical signal output. This dual parameter optic sensor effectively measures both twist and temperature, resulting in accurate torque measurements.
Another significant patent is the "Encoding system and method for differential capacitive transducer." This system operates a comparator to produce a series of pulses that represent the transducer value. It normalizes the sensed value to account for environmental influences. The transducer is designed to monitor the linear movement of the fuel-air interface in a tank and the angular position of an input shaft.
Career Highlights
Throughout his career, Douglas R Patriquin has worked with various companies, including Simmonds Precision Products, Inc. His work has significantly impacted the development of measurement technologies.
Collaborations
He has collaborated with notable individuals in the field, including William B Spillman, Jr. and Sylvester M Ellinger, contributing to advancements in engineering and technology.
Conclusion
Douglas R Patriquin's innovative work in torque measurement technology and his contributions to engineering highlight his importance as an inventor. His patents reflect a commitment to advancing measurement systems, making a lasting impact in the field.