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Title: Pressurized security barrier and alarm system

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.
Inventors:
 [1]
  1. (Knoxville, TN)
Issue Date:
OSTI Identifier:
869831
Assignee:
United States of America as represented by United States (Washington, DC) ORNL
Patent Number(s):
US 5406258
Contract Number:
AC05-84OR21400
Research Org:
LOCKHEED MARTIN ENRGY SYST INC
Country of Publication:
United States
Language:
English
Subject:
pressurized; security; barrier; alarm; placement; passageway; interconnected; tubing; grid; pattern; openings; allow; passage; connected; pressure; switch; located; site; activates; occurrence; drop; reinforcing; bar; inside; length; rupture; set; intruder; attempt; crimp; seal; portion; application; hydraulic; tool; radial; rectangular; patterns; disclosed; security barrier; located inside; pressure drop; grid pattern; reinforcing bar; allow passage; /340/

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