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US 8,714,064 B2Granted
Machine tool, particularly a hand-held power tool
AssigneeRobert Bosch GmbH
InventorsThilo Koeder, Joachim Platzer, Ulli Hoffmann
Life of this patent
Estimating the term…
Abstract
A power tool, particularly a hand-held power tool, is provided with a sensor unit for sensing an observation area on the workpiece side with varying resolution and having arranged in front of it a lens system with lenses of varying focal length.
Claims11
A compass saw comprising:
- a saw blade driven to reciprocate;
- and
- an observation device including (i) a sensor unit having only one sensor that is aligned with a workpiece side observation area and a working line to be followed, (ii) at least one detection surface covering a working area of the working tool, (iii) an optical system that is upstream of the sensor unit and includes a lens system having lenses of different focal lengths,
- wherein the observation device has the sensor unit aligned with a plurality of observation fields including at least the detection surface and a probing surface,
- wherein the lens system includes a first lens having a first beam path aligned at the detection surface and a second lens having a second beam path aligned at the probing surface and
- wherein the probing surface is upstream of the detection surface in a direction of the working line.
3 more elements
Dependencies are inferred from the claim text.