ROBERT A HIRSH
Engineers in Bethel Park, PA
License number
Pennsylvania PE015513E
Category
Engineers
Type
Professional Engineer
Address
Address
Bethel Park, PA 15102
Professional information
Vehicle Barrier
US Patent:
4989835, Feb 5, 1991
Filed:
Apr 15, 1988
Appl. No.:
7/181993
Inventors:
Robert A. Hirsh - Bethel Park PA
Assignee:
The United States of America as represented by the United States
Department of Energy - Washington DC
Department of Energy - Washington DC
International Classification:
E01F 1300
US Classification:
256 131
Abstract:
A vehicle security barrier which can be conveniently placed across a gate opening as well as readily removed from the gate opening to allow for easy passage. The security barrier includes a barrier gate in the form of a cable/gate member in combination with laterally attached pipe sections fixed by way of the cable to the gate member and lateral, security fixed vertical pipe posts. The security barrier of the present invention provides for the use of cable restraints across gate openings to provide necessary security while at the same time allowing for quick opening and closing of the gate areas without compromising security.