- the top layer of the plate is made of steel sheet,
- the frame of the bridge is made of steel profiles,
- the platform is opened/closed by driving the platform plate with a lever,
- the working range of the plate is restricted by appropriate safety devices, which protect the bridge against breaking,
- the weight of the bridge is balanced by a spring mechanism, which ensures that the bridge is activated with minimum energy consumption and protects it against rapid fall.



