Don B Carver

US Patent:

54062586, Apr 11, 1995

Filed:

Apr 26, 1994

Appl. No.:

8/233677

Inventors:

Don W. Carver - Knoxville TN

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

G08B 1320

US Classification:

340544

Abstract:

A security barrier for placement across a passageway is made up of interconnected pressurized tubing made up in a grid pattern with openings too small to allow passage. The tubing is connected to a pressure switch, located away from the barrier site, which activates an alarm upon occurrence of a pressure drop. A reinforcing bar is located inside and along the length of the tubing so as to cause the tubing to rupture and set off the alarm upon an intruder's making an attempt to crimp and seal off a portion of the tubing by application of a hydraulic tool. Radial and rectangular grid patterns are disclosed.