Quick release system for guardrail terminals

Details Quick release system for guardrail terminals Quick release system for guardrail terminals

1994-09-29

1996-02-13

Johnson, Blair M.

Fences

Highway guard

404 6, E01F 1504

Patent

active

054906610

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.

REFERENCES:
patent: 3266013 (1966-08-01), Schmidt
patent: 3967906 (1976-07-01), Strizki
patent: 4666331 (1987-05-01), Riley
patent: 4715742 (1987-12-01), Dickinson
patent: 5022782 (1991-06-01), Gertz et al.
patent: 5033905 (1991-07-01), Schmidt et al.
patent: 5039066 (1991-08-01), Stacey
patent: 5044609 (1991-09-01), Cicinnati et al.
patent: 5078366 (1992-01-01), Sicking et al.
patent: 5391016 (1995-02-01), Ivey et al.

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