Starter device for an internal combustion engine and handheld work apparatus having an internal combustion engine and said starter device

A handheld work apparatus comprising:

• an internal combustion engine having a crankshaft and defining a rotational axis;
• a starter device for said engine;
• said starter device including:
• an actuator configured to permit rotation to be imparted thereto to start said engine;
• and, an entrainer having at least one coupling unit for coupling to said crankshaft of said engine;
• said entrainer and said actuator being rotatably mounted about said rotational axis;
• a damper spring arranged between and operatively connecting said entrainer and said actuator to each other;
• said starter device further including at least one stud having an outer periphery;
• said damper spring being mounted on said outer periphery of said stud;
• said damper spring being a hinge spring wound from spring wire;
• said damper spring defining a section plane containing said rotational axis;
• said spring wire having a cross section in said section plane;
• in said cross section, said spring wire having an axially measured width (e) and a radially measured thickness (d, g, h);
• in said cross section, said spring wire further having a radially inner-lying inner side and a radially outer-lying outer side;
• in said cross section, said inner side of said spring wire being a rounded inner side;
• and,
• at least a portion of said cross section running linearly at said outer side of said spring wire.

A starter device for an internal combustion engine having a crankshaft and defining a rotational axis, the starter device comprising:

• an actuator configured to permit rotation to be imparted thereto to start said engine;
• an entrainer having at least one coupling unit for coupling to said crankshaft of said engine;
• said entrainer and said actuator being rotatably mounted about said rotational axis;
• a damper spring arranged between and operatively connecting said entrainer and said actuator to each other;
• at least one stud having an outer periphery;
• said damper spring being mounted on said outer periphery of said stud;
• said damper spring being a hinge spring wound from spring wire and said spring wire being wound to include a plurality of turns;
• said damper spring defining a section plane containing said rotational axis;
• said spring wire having a cross section in said section plane;
• in said section plane, said spring wire having an axially measured width (e) and a radially measured thickness (d, g, h);
• in said cross section, said spring wire further having a radially inner-lying inner side and a radially outer-lying outer side;
• said damper spring being mounted between said entrainer and said actuator so as to cause the outer diameter of said damper spring to be reduced when said actuator is actuated by an operator with said outer-lying outer side of said spring wire being exposed over at least half of said turns and lying at a spacing away from adjacent components;
• in said cross section, said inner side of said spring wire being a rounded inner side;
• and,
• at least a portion of said cross section running linearly at said outer side of said spring wire.