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US 2011/0079408 A1Published application
Handheld power tool having a shiftable mechanism
AssigneeRobert Bosch GmbH
InventorsMichael-Andreas GRUNWALD, Marco Pawlowski, Joerg Welke, Dietmar Saur
Life of this patent
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Abstract
A handheld power tool with a shiftable mechanism, which is adjustable between two operating positions, has a coupling spring that is coupled with an adjustable shifting member of the mechanism. The coupling spring is embodied as a metastable spring.
Claims20
A handheld power tool having:
- a shiftable mechanism which is adjustable between at least two operating positions;
- and
- a coupling spring which acts on at least one mechanical component of the shiftable mechanism and is embodied as a metastable coupling spring which in a first operating position assumes a stable position and in a second operating position assumes a quasi-stable position,
- wherein in the quasi-stable position the coupling spring exerts a lesser spring force than in an intermediate position between the two operating positions.
1 more element
Dependencies are inferred from the claim text.