Location History:
- Arcadia, CA (US) (1976 - 1982)
- Enfield, CT (US) (1984)
Company Filing History:
1 out of 1,305 
1 out of 22 
1 out of 832,812 Years Active: 1976-1984
Title: David John Stevenson: Innovator in Self-Defense and Torque Measurement Technologies
Introduction
David John Stevenson is an accomplished inventor based in Arcadia, CA (US). He holds a total of 3 patents that showcase his innovative contributions to technology. His work primarily focuses on self-defense mechanisms and torque measurement devices, reflecting his commitment to enhancing safety and precision in various applications.
Latest Patents
One of Stevenson's notable inventions is a self-defense spray device. This device is designed to spray a noxious powder and includes a housing for a CO₂ cartridge. The moveable barrel carries a firing pin that punctures the cartridge to explosively release gas. The barrel features a nozzle at its outer end and contains the noxious powder in a chamber defined between the barrel and the firing pin. When the barrel is released from an outwardly extended position, it is thrust by a spring against the rupturable end of the cartridge, releasing gas that propels the active agent toward the assailant. Typically, a powdered tear gas is employed in this device.
Another significant patent is a torque measuring device. This device measures the torque of a rotating member about an axis. It includes a support member attached to a fixed object by at least two linkage arms. Each linkage arm is pivotably attached at two points, allowing for precise measurement of the force imparted to the support member by the rotating member. The design ensures that the instantaneous center of rotation of the support member coincides with the axis of rotation of the rotating member, enabling accurate torque calculations.
Career Highlights
Throughout his career, David John Stevenson has worked with various companies, including The Lubrizol Corporation. His experience in these organizations has contributed to his development as an inventor and innovator in his field.
Collaborations
Stevenson has collaborated with notable individuals, including his coworker Robert E. Domian. Their partnership has likely fostered creativity and innovation in their respective projects.
Conclusion
David John Stevenson exemplifies the spirit of innovation through his patents and contributions to technology. His work in self-defense and torque measurement devices highlights his dedication to improving safety and precision in everyday applications.