Abstract
The present invention is directed to a quick release coupling, a displacement sensor, and an electronic monitoring unit. The displacement sensor is mounted near the end of the guardrail for measuring the force of a vehicle impact. The electronic monitoring unit is connected to the sensor and measures the acceleration of the impact and provides an actuation signal when the acceleration exceeds a predetermined value. The quick release coupling forms a connection between two separated portions of the guard rail and includes an explosively actuated release mechanism actuated by the monitoring unit.
Patent Number
5,490,661
Date Of Issue
Inventors
David J. Stevens; Kirk A. Marchand; Joseph B. Mayer, Jr.