Location History:
- Warwickshire, GB (1986 - 1987)
- Southam, GB (1995)
- Leamington Spa, GB (1996)
- Coventry, GB (1997)
Company Filing History:
3 out of 4 
1 out of 1 
1 out of 1 Years Active: 1986-1997
Title: The Innovations of John J Bushnell
Introduction
John J Bushnell is a notable inventor based in Southam, GB. He has made significant contributions to the field of engineering, particularly in the development of energy absorption technologies. With a total of 5 patents to his name, Bushnell's work has had a lasting impact on various industries.
Latest Patents
One of his latest patents is an innovative hydro-pneumatic cushioning device designed for end-of-car couplers. This device features a ported tube that separates the hydraulic cylinder chamber from an outer annular chamber containing gas. Each port is equipped with a valve, where the obturating member of each valve is a differential area piston. These valves remain closed until a specific threshold force is applied by the movement of the plunger in the cylinder. Once this force is reached, the valves between the plunger and the end of the cylinder chamber open, allowing liquid flow between the two chambers.
Career Highlights
Throughout his career, John J Bushnell has worked with several companies, including Oleo International Holdings Limited and Oleo International Holding Limited. His expertise in energy absorption technologies has made him a valuable asset in these organizations.
Collaborations
Bushnell has collaborated with notable individuals in his field, including Ronald C Page and Derrick G Williams. These partnerships have contributed to the advancement of his innovative projects.
Conclusion
John J Bushnell's contributions to the field of engineering through his patents and collaborations highlight his role as a significant inventor. His work continues to influence the development of energy absorption technologies.