Slingshot hammer / Emergency Hammer

When an accident happens inside the compartment, people have to spend lots of strength to break the window glass with the existing safety hammer. However, this kind of safety hammer is not very helpful .
"Slingshot hammer" uses fixed-point revolving principle. First, we rotate the handle to a certain place, then lift it from the end. While we release our fingers, it bounces back to the window, breaking it with elastic force. . It is much safer, more convenient and more suitable for women and elder people. Most importantly, it saves time for people to escape from the bus when an accident happens which is very vital for saving people's life.