Bullet proof sliding window for security vehicle - is actuated by hydraulic cylinder and has spring to counterbalance window weight

摘要

A hydraulic cylinder (19) acting on the lever (6) raises or lowers the window. A spring (26) acting on the pivot pin (9) holds the window in the closed position. The spring has a guide tube (23) linked to a part of the door and works in tension against a disc (24) on a push rod (25). This rod is linked to at least one of the pivot arms (6,7,8). ADVANTAGE - The heavy weight of the bullet proof glass is counterbalanced by a spring.