This inventor holds 1 USPTO granted patent and 2 published patent applications and 1 EPO patent. Top assignee: Sram Corporation. Active years: 2025.
Company Filing History:
Years Active: 2025
Title: Donald Frederick Coffman: Innovator in Bicycle Technology
Introduction
Donald Frederick Coffman is a notable inventor based in Colorado Springs, CO (US). He has made significant contributions to the field of bicycle technology, particularly with his innovative designs that enhance user experience and functionality.
Latest Patents
Coffman's most recent patent focuses on height adjustable seat posts for bicycles. This invention features a telescopic arrangement of an upper tube and a lower tube, allowing for adjustable height. The design includes a shaft coupled to the lower tube, extending into the upper tube, and a piston assembly that divides the upper tube into two fluid-filled chambers. A valve within the piston assembly controls fluid flow between these chambers, enabling the adjustment of the seat height. Additionally, a solenoid is incorporated to manage the valve's operation, providing a seamless user experience.
Career Highlights
Coffman is currently associated with Sram Corporation, a leading company in bicycle components and accessories. His work at Sram has allowed him to focus on innovative solutions that improve cycling performance and comfort.
Collaborations
Coffman collaborates with Rafer Chambers, contributing to the development of advanced bicycle technologies. Their partnership exemplifies the importance of teamwork in driving innovation within the industry.
Conclusion
Donald Frederick Coffman's contributions to bicycle technology, particularly through his height adjustable seat post patent, highlight his role as an innovator in the field. His work continues to influence the cycling community and enhance the overall riding experience.