Location History:
- Hartselle, AL (US) (1982 - 1998)
- Huntsville, AL (US) (2001)
Company Filing History:
5 out of 11 
5 out of 122 
2 out of 18 Years Active: 1982-2001
Title: Innovations of Gary Grantland
Introduction
Gary Grantland is an accomplished inventor based in Hartselle, Alabama. He holds a total of 14 patents, showcasing his expertise in the field of coin validation technology. His innovative designs have significantly contributed to the efficiency and reliability of coin-operated devices.
Latest Patents
One of Grantland's latest patents is a coin validation apparatus. This mechanism evaluates coins and similar objects inserted into it. It features a coin chute that defines a coin path and a sensor that assesses the material of the object in the chute. The sensor includes a coil sensor positioned adjacent to the coin path and a non-resonant electrical circuit for its operation. Additionally, the mechanism incorporates a light source that directs light across the coin path and a light sensor that detects this light. An electronic unit evaluates the electromagnetic perturbation caused by an object moving past the coil sensor and determines the amount of light blocked by the object. This evaluation helps ascertain whether the object is a valid coin.
Another significant patent is the full coin box signaling device for use with coin telephones. This monitoring circuit provides coin detection, totalization of coin volume, and signaling to the telephone central office when the coin box is full. The coin chute assembly has three channels that guide nickels, dimes, and quarters through specific locations. Light sources and detectors monitor the passage of coins, while a microprocessor controls these components and counts the coins. Once the coin box reaches a full condition, the microprocessor signals that the predetermined level has been reached.
Career Highlights
Throughout his career, Grantland has worked with notable companies such as Palco Telecom Inc. and GTE Automatic Electric Incorporated. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects.
Collaborations
Grantland has collaborated with several professionals in his field, including Eduard F. Boeckmann and Larry A. Woodworth. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.
Conclusion
Gary Grantland's contributions to coin validation technology through his patents and collaborations highlight his innovative spirit and dedication to improving coin-operated systems. His work continues to influence the industry and pave the way for future advancements.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.