US 11,958,155 B2
Handheld work apparatus having a work tool
Felix Oberhofer, Stuttgart (DE); Marcus Jenke, Weil der Stadt (DE); Franziska Kern, Stuttgart (DE); Thomas Maier, Ostfildern (DE); Verena Mann, Remshalden (DE); Lars Bathke, Rudersberg (DE); Roland Mandel, Stuttgart (DE); and Benedikt Posner, Stuttgart (DE)
Assigned to Andreas Stihl AG & Co. KG, Waiblingen (DE)
Filed by Andreas Stihl AG & Co. KG, Waiblingen (DE)
Filed on Sep. 14, 2020, as Appl. No. 17/020,482.
Claims priority of application No. 19 197 112 (EP), filed on Sep. 12, 2019.
Prior Publication US 2021/0078123 A1, Mar. 18, 2021
Int. Cl. B25F 5/00 (2006.01); B23Q 5/58 (2006.01); B25F 5/02 (2006.01); B27B 17/08 (2006.01)
CPC B23Q 5/58 (2013.01) [B25F 5/02 (2013.01); B27B 17/08 (2013.01)] 20 Claims
OG exemplary drawing
 
1. 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 into a disable position wherein said actuating lever is blocked and into at least one enable position wherein said actuating lever is enabled for actuation;
said longitudinal axis of said handle and said rotational axis of said blocking lever conjointly defining an angle (α) when viewed in a direction perpendicular to said longitudinal plane;
said angle (α) lying in a range of 10° to 60°;
said blocking lever having a contour formed thereon;
a spring unit arranged so as to coact with said contour; and,
wherein said spring unit slides on said contour of said blocking lever during pivoting thereof.