Company Filing History:
1 out of 32 
1 out of 231 
Years Active: 1996-2003
Title: The Innovative Contributions of Donald E Griffiths
Introduction
Donald E Griffiths is a notable inventor based in Paignton, GB. He has made significant contributions to the field of engineering and product design, holding a total of 2 patents. His work primarily focuses on creating innovative solutions that enhance product functionality and safety.
Latest Patents
One of Griffiths' latest patents is for a tamper evident closure. This invention features a snap-on or screw type closure that includes first and second relatively movable plastic parts. These parts transition from an initial position to a new limiting position upon first opening, providing a visual indication of tampering. The design ensures that the two plastic parts are formed in close association, with inter-engaging complementary formations that become irreversibly disengaged when the closure is first opened.
Another significant patent by Griffiths is a method of injection moulding a polymeric material insert into a metal component. This method involves placing a metallic shell inside a mould cavity of an injection moulding machine. The process ensures that part of the external surface of the shell is spaced from the mould cavity, maintaining a seal during the injection of plastics material. The frusto-conical shape of the end wall compensates for longitudinal contraction, ensuring the integrity of the seal is preserved.
Career Highlights
Throughout his career, Donald E Griffiths has worked with several prominent companies, including Carnaudmetalbox Plc and Crown Cork & Seal Technologies Corporation. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects.
Collaborations
Griffiths has collaborated with notable individuals in the industry, including Roderick M De'ath and Christopher Paul Ramsey. These partnerships have further enriched his work and expanded the impact of his inventions.
Conclusion
Donald E Griffiths is a distinguished inventor whose innovative patents have significantly contributed to product safety and manufacturing processes. His work continues to influence the industry and inspire future innovations.