Patent ID: 7318956
Filing Date: 2008-01-15
Classification: B32B,F41H,Y10T

Abstract:
1. A transparent panel effective for blocking penetration of a bullet, the transparent panel comprising: a first glass sheet; a second glass sheet bonded to said first glass sheet; a first acrylic sheet bonded to said second glass sheet; a second acrylic sheet bonded to said first acrylic sheet; a third acrylic sheet bonded to said second acrylic sheet, said first, second and third acrylic sheets each have a thickness in a range of about 7 mm to about 12 mm; a polycarbonate sheet bonded to said third acrylic sheet; a first side; and a second side, the transparent panel meeting National Institute of Justice Standard Level IV and preventing a penetration of the bullet through the transparent panel when fired at said first side, but allowing a penetration of a further bullet through the transparent panel when fired at said second side.