Elizabeth A Elliott

US Patent:

8382391, Feb 26, 2013

Filed:

Apr 11, 2012

Appl. No.:

13/444663

Inventors:

Thomas E. Potter - Hummelstown PA, US
Elizabeth Ann Elliott - Hershey PA, US

Assignee:

Pro Barrier Engineering, LLC - Hummelstown PA

International Classification:

E01F 13/00
E01F 13/04

US Classification:

404 6

Abstract:

A roller barrier security system includes a pair of cylindrical concrete roller barriers mounted on a support apparatus in an elevated position to enable movement of the roller barriers onto a roadway to block the movement of traffic. The roller barriers are retained by cables wrapped around the cylindrical rollers and secured by a solenoid. A secondary restraint in the form of pivoted catch members also prevents the rollers from leaving the elevated position. Each catch member is secured by a slide block coupled to a drop weight secured by a trap door controlled by a second solenoid. To allow movement of the rollers, the two solenoids are activated which releases the wrap-around cable and the trap door. The falling drop weight pulls the slide block away from the catch member to allow pivoting thereof, while the released cable allows the rollers to move by gravity onto the roadway surface.