Compressed air nailer with safety valve assembly

A compressed air nailer comprising:

• a working piston configured to be driven by compressed air during a driving process;
• a driving tappet configured to connect to the working piston and configured to drive a fastener means when the driving process is triggered;
• a trigger;
• a placing sensor, wherein actuation of the trigger and the placing sensor aerate or deaerate a main control line to enable triggering of the driving process;
• a control valve assembly comprising,
• a trigger valve associated with the trigger, and
• a placing sensor valve associated with the placing sensor;
• and
• a safety valve assembly configured to define a locked position and an open position by controlling a first pressure in a first control space and a second pressure in a second control space, wherein in the open position, the main control line is connected to the control valve assembly and wherein in the locked position, the main control line is not connected to the control valve assembly,
• wherein the first control space is connected to the trigger valve such that an actuation of the trigger valve is configured to bring the safety valve assembly into the locked position,
• wherein, when the safety valve assembly is in the open position, the second control space is connected to the placing sensor valve such that an actuation of the placing sensor valve is configured to bring the safety valve assembly into the open position when the trigger valve is actuated,
• wherein the safety valve assembly is in the open position when the first control space and the second control space are aerated.