Penetration resistant barrier

US4049864A · kind A · utility

Assignee

• The United States of America as represented by the United States Energy Research and Development Administration · US

Inventors

• William Hoover · Albuquerque, US
• Keith E. Mead · Peralta, US
• Henry K. Street · Albuquerque, US

Key dates

• Filing date: Feb 12, 1976
• Grant date: Sep 20, 1977
• Expiry date: Feb 12, 1996

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31663
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The disclosure relates to a barrier for resisting penetration by such as hand tools and oxy-acetylene cutting torches. The barrier comprises a layer of firebrick, which is preferably epoxy impregnated sandwiched between inner and outer layers of steel. Between the firebrick and steel are layers of resilient rubber-like filler.