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US 7,621,019 B2Granted
Blower apparatus
AssigneeAndreas Stihl AG & Co. KG
InventorsDieter Kremsler, Michael Hocquel, Klaus Langhans, Helmut Swistun, Uwe Gaese
Life of this patent
Estimating the term…
Abstract
A blower apparatus has a blower housing having a blower intake. A motor-driven blower is arranged in the blower housing and takes in air in a flow direction through the blower intake into the blower housing. A device for mechanical clearing of the blower intake is arranged at the blower intake. The mechanical clearing device is driven in rotation during operation of the blower apparatus.
Claims13
A blower apparatus comprising:
- a blower housing having a blower intake;
- a motor-driven blower arranged in the blower housing and taking in air in a flow direction through the blower intake into the blower housing;
- a mechanical clearing device arranged upstream of the blower intake for clearing the blower intake, wherein the mechanical clearing device transports sucked-in dirt radially outwardly so that the blower intake is kept free of dirt;
- and
- a screen arranged upstream of the blower intake in the flow direction;
- wherein the mechanical clearing device is driven in rotation during operation of the blower apparatus.
3 more elements
A blower apparatus comprising:
- a blower housing having a blower intake;
- a motor-driven blower arranged in the blower housing and taking in air in a flow direction through the blower intake into the blower housing;
- and
- a mechanical clearing device arranged at the blower intake for clearing the blower intake;
- a suction opening arranged upstream of the blower intake and an access protection device provided at the suction opening;
- a back support plate, wherein the suction opening is arranged between the back support plate and the blower housing.
3 more elements
A blower apparatus comprising:
- a blower housing having a blower intake;
- a motor-driven blower arranged in the blower housing and taking in air in a flow direction through the blower intake into the blower housing;
- a mechanical clearing device arranged upstream of the blower intake for clearing the blower intake, wherein the mechanical clearing device transports sucked-in dirt radially outwardly so that the blower intake is kept free of dirt, wherein the mechanical clearing device is driven in rotation during operation of the blower apparatus;
- and
- an annular suction opening surrounding the blower intake and creating a radial intake flow toward the blower intake.
2 more elements
Dependencies are inferred from the claim text.