Hand-held power tool with a rotary driven tool

A power planer, comprising:

• a housing containing a motor;
• a drive pulley rotatably driven by said motor;
• a cutter shaft of a cutter head;
• a driven pulley mounted on said cutter shaft;
• said driven pulley being driven from said drive pulley via an endless belt;
• a brake element biased to engage with one of said pulleys to brake said one pulley;
• an on/off switch for controlling said motor, said switch having an activator manually movable between on and off positions to energize and de-energize, respectively, said motor;
• a safety element interconnected with said switch activator and biased to a blocking position to block operation of said switch activator to said on position when said switch activator is in said off position;
• said safety element being manually movable from said blocking position to a permitting position to allow movement of said switch activator from said off position to said on position;
• said safety element being connected to said brake element, in said blocking position said safety element allowing said brake element to engage said one pulley, in said permitting position said safety element disengaging said brake element from said one pulley;
• and
• said safety element being biased towards said blocking position to automatically effect engagement of said brake element with said one pulley when said switch activator is moved to said off position.

A hand held power tool, comprising:

• a motor;
• a rotary working tool connected to be rotatably driven by said motor;
• an on/off switch having a switch activator movable between on and off positions to energize and de-energize, respectively, said motor;
• a brake biased to a braking position to brake rotation of said rotary working tool;
• a manually actuated safety element connected to said brake and also interconnected with said switch activator;
• said safety element being movable between a safety position and a release position and being biased towards said safety position;
• said safety element in said safety position effecting application of said brake to said braking position and simultaneously preventing movement of said switch activator from said off position to said on position;
• said safety element when manually held in said release position disengaging said brake to free said rotary working tool for rotation, and simultaneously allowing said switch activator to be moved from said off position to said on position;
• and
• said switch activator when in said on position locking said safety element in said release position to retain said brake disengaged as long as said switch activator is in said on position.