Patent ID: 11958155
Assignee: ANDREAS STIHL AG & CO. KG
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 11:
12. A portable handheld work apparatus comprising:
a work tool;
a drive motor for driving said work tool;
a handle defining a longitudinal axis;
an actuating lever for operating said drive motor;
a blocking lever for said actuating lever;
said blocking lever defining a rotational axis and being journalled to pivot about said rotational axis;
said work apparatus defining a longitudinal plane containing said longitudinal axis of said handle therein;
said longitudinal plane running parallel to said rotational axis of said blocking lever;
said blocking lever being pivotable from a disable position wherein said actuating lever is blocked and at least one enable position wherein said actuating lever is enabled for actuation;
said blocking lever having a contour formed thereon;
a spring unit arranged so as to coact with said contour;
said contour extending over an upper angular section about said rotational axis of said blocking lever and over a lower section configured in a direction toward said rotational axis; and,
said spring unit, lying against said contour at said lower section thereof, biasing said blocking lever in a direction toward said blocking position.