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US 7,040,972 B2Granted
Power tool
AssigneeRobert Bosch GmbH
InventorsErhard Hoffmann, Frank Fuchs
Life of this patent
Estimating the term…
Abstract
A power tool with a housing (12) and a tool (18, 22) located thereon such that it is capable of being driven in a rotating and/or oscillating manner, the tool being operable as directed using vacuum flow, in particular using a vacuum cleaner. The power tool is made particularly powerful by the fact that a radial turbine wheel (34) with forward-guiding and rearward-guiding vane rows (44, 48) functions as the drive.
Claims7
A power tool, comprising:
- a housing (12);
- and
- a tool (18, 22) disposed on said housing in such a way that the tool is driven in a rotating and/or oscillating manner, the tool being operable using vacuum flow,
- wherein a radial turbine with a radial turbine wheel (34) functions as a drive, the radial turbine having means for steadying inflowing and outflowing air in the form of a forward-guiding vane row and a rearward-guiding vane row (44, 48),
- wherein the rearward-guiding vane row (48) includes air guide bodies (52) configured as curved blades, wherein the rearward-guiding vane row (48) functions as a bearing seat for the radial turbine wheel (34), and wherein air which drives the radial turbine wheel is directed in a center region of the radial turbine wheel and is then suctioned away radially outwardly by an outer edge of the radial turbine wheel.
2 more elements
A power tool, comprising:
- a housing (12);
- and
- a tool (18, 22) disposed on the housing in such a way that the tool is driven in a rotating and/or oscillating manner, the tool being operable using vacuum flow,
- wherein a radial turbine with a radial turbine wheel (34) functions as a drive, the radial turbine having means for steadying inflowing and outflowing air in the form of a forward-guiding vane row and a rearward-guiding vane row (44, 48),
- wherein a Pelton turbine with Pelton turbine wheel (35) with forward-guiding vane row and with rearward-guiding vane row (48) functions as the drive,
- wherein the rearward-guiding vane row (48) includes air guide bodies (52) configured as curved blades, wherein the rearward-guiding vane row (48) functions as a bearing seat for the Pelton turbine wheel (35), and wherein air which drives the Pelton turbine wheel (35) is directed in a center region of the Pelton turbine wheel (35) and is then suctioned away radially outwardly by an outer edge of the Pelton turbine wheel (35).
3 more elements
Dependencies are inferred from the claim text.