Company Filing History:
Years Active: 1991-2000
Title: Kirk D Hoffman: Innovator in Coin Detection Technology
Introduction
Kirk D Hoffman is a notable inventor based in Yorkville, IL (US), recognized for his contributions to coin detection technology. He holds a total of 5 patents, showcasing his innovative approach to solving challenges in the field.
Latest Patents
Hoffman's latest patents include a "Method and apparatus for discriminating different coins in free fall." This invention employs a coin sensor with a pair of drive coils that generate a horizontally elongated magnetic field across the free-fall path of the coin. The drive coils are driven by a square wave, and the induced ringing waveforms in sensor coils are measured as the coin passes through the magnetic field. A digitized signature is derived from these waveforms and compared to pre-stored reference signatures to identify the coin. A diverter mechanism directs the coin to an accept path when a match is found and to a reject path when it is not. Another significant patent is the "Coin detector and identifier apparatus and method," which focuses on detecting fraud in coin detectors. This apparatus includes a coin validating device and a coin sensing apparatus that enhances resistance to miscounting and traditional cheating methods.
Career Highlights
Throughout his career, Kirk D Hoffman has worked with several companies, including Coin Mechanisms, Inc. and General Signal Corporation. His work has significantly impacted the development of reliable coin detection systems.
Collaborations
Hoffman has collaborated with notable individuals in the industry, including Joe Ferrantelli and Robert Huizenger. Their combined expertise has contributed to advancements in coin detection technology.
Conclusion
Kirk D Hoffman is a distinguished inventor whose work in coin detection technology has led to several innovative patents. His contributions continue to influence the industry and enhance the reliability of coin-operated devices.