Location History:
- Royal Oak, MI (US) (2016)
- Farmington Hills, MI (US) (2019 - 2020)
Company Filing History:
Years Active: 2016-2020
Title: Innovations of John Randall Armstead
Introduction
John Randall Armstead is a notable inventor based in Farmington Hills, MI (US). He has made significant contributions to the field of automotive technology, holding a total of 6 patents. His work primarily focuses on advancements in transmission systems, showcasing his expertise and innovative thinking.
Latest Patents
One of Armstead's latest patents is for a transmission with a selectable one-way clutch. This invention includes an active and passive state, allowing for a successful transition from the active state to the passive state only when there is no torque that could cause overrunning. The controller plays a crucial role in this process, partially engaging a first friction clutch to induce a torque that prevents overrunning until a lash crossing is detected. Once this is achieved, the controller releases the first clutch and partially applies a second clutch to induce a torque toward overrunning. The second clutch is released when slip is detected, indicating that the passive state has been successfully achieved.
Another patent by Armstead also focuses on a transmission with a selectable one-way clutch. This invention emphasizes the importance of avoiding occupant discomfort and hardware damage during transitions from the passive state to the active state. To ensure smooth operation, transitions must only be commanded when there is no or very little slip present across the selectable one-way clutch. Various methods are presented to eliminate slip based on vehicle speed, ensuring optimal performance in different driving conditions.
Career Highlights
Armstead is currently employed at Ford Global Technologies, LLC, where he continues to innovate and develop advanced automotive technologies. His work has significantly impacted the efficiency and reliability of transmission systems in modern vehicles.
Collaborations
Armstead has collaborated with talented individuals such as Stephen Michael Cicala and Conor Edward Sullivan. These partnerships have fostered a creative environment that encourages the development of groundbreaking technologies.
Conclusion
John Randall Armstead's contributions to automotive technology through his innovative patents demonstrate his commitment to enhancing vehicle performance and safety. His work continues to influence the industry, paving the way for future advancements in transmission systems.