This inventor holds 2 USPTO granted patents. Top assignees: International Tools (1973) Ltd., Reflex Corporation of Canada Limited. Active years: 1976-1982.
Location History:
- Clarkson, CA (1976)
- Misissauga, CA (1982)
Company Filing History:
1 out of 11 
1 out of 1 Years Active: 1976-1982
Title: Stewart H. Birrell: Innovator in Safety and Signaling Solutions
Introduction
Stewart H. Birrell is a notable inventor based in Clarkson, CA. He has made significant contributions to the fields of safety closures and traffic signaling devices. With a total of 2 patents, his innovations reflect a commitment to enhancing safety and functionality in everyday products.
Latest Patents
Birrell's latest patents include a child-resistant closure and a collapsible triangular traffic signaling device. The child-resistant closure features a container and a closure comprising outer and inner caps, designed to be attached by conventional capping machines. The inner cap is formed with a circular dome-shaped top panel and a threaded skirt portion for secure engagement with the container. Additionally, the outer cap includes a circular end wall and an axially projecting skirt portion.
The triangular signaling device is designed for collapsibility, consisting of three leg members that can transition between an erect triangle and a folded position. This device incorporates light reflective means on the outer surface of the leg members, ensuring visibility and safety when in use.
Career Highlights
Throughout his career, Stewart H. Birrell has worked with several companies, including International Tools Ltd. and Reflex Corporation of Canada Limited. His experience in these organizations has contributed to his expertise in product design and innovation.
Collaborations
Birrell has collaborated with various professionals in his field, including his coworker Peter Hedgewick. Their joint efforts have likely influenced the development of his patented inventions.
Conclusion
Stewart H. Birrell's contributions to safety and signaling solutions demonstrate his innovative spirit and dedication to improving everyday products. His patents reflect a blend of practicality and creativity, making a lasting impact in his areas of expertise.