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US 7,303,025 B2Granted
Motor-driven work apparatus
AssigneeAndreas Stihl AG & Co. KG
InventorGünter Mayer
Life of this patent
Estimating the term…
Abstract
A rotatably driveable work tool (1) of a motor-driven work apparatus has, at a front end (2, 3), an end plate (5, 6) lying perpendicularly to a rotational axis (4). The end plate (5, 6) has an outer diameter (DR) which is less than a flight circular diameter (DF) of the work tool (1). The end plate (5, 6) is configured as a roll-up protective ring (8) which extends in a radial direction (14) from an inner diameter (DI) to the outer diameter (DR). The roll-up protective ring has an axially-extending component from the work tool (1) outwardly.
Claims11
A motor-driven work apparatus comprising:
- a rotatably driven work tool for ground processing and said rotatably driven work tool defining a rotational axis and having a longitudinal end;
- a drive transmission operatively connected to said work tool and said drive transmission including a lateral bearing region;
- said lateral bearing region defining an axial direction and facing toward said work tool;
- said work tool defining a flight circle as said work tool rotates about said rotational axis and said flight circle having a diameter (DF);
- said work tool having an end plate connected thereto so as to rotate therewith;
- said end plate being disposed at said longitudinal end of said work tool so as to lie perpendicular to said rotational axis and said end plate having an outer diameter (DR) which is less than said flight circle diameter (DF);
- said end plate being configured as a roll-up protective ring for preventing the roll-up of long fibrous material;
- said roll-up protective ring being configured as a conical disc in at least a component region thereof and said roll-up protective ring extending from an inner diameter (DI) to said outer diameter (DR);
- and,
- said roll-up protective ring extending outwardly away from said work tool so as to at least partially overlap said lateral bearing region in said axial direction thereby hindering an accumulation of said long fibrous material at said lateral bearing region.
7 more elements
A motor-driven work apparatus comprising:
- a rotatably driven work tool defining a rotational axis and having a longitudinal end;
- a drive transmission operatively connected to said work tool and said drive transmission including a lateral bearing region;
- said lateral bearing region defining an axial direction and facing toward said work tool;
- said work tool defining a flight circle as said work tool rotates about said rotational axis and said flight circle having a diameter (DF);
- said work tool having an end plate connected thereto so as to rotate therewith;
- said end plate being disposed at said longitudinal end of said work tool so as to lie perpendicular to said rotational axis and said end plate having an outer diameter (DR) which is less than said flight circle diameter (DF);
- said end plate being configured as a roll-up protective ring for preventing the roll-up of long fibrous material;
- said roll-up protective ring being configured as a conical disc in at least a component region thereof and said roll-up protective ring extending from an inner diameter (DI) to said outer diameter (DR);
- said roll-up protective ring extending outwardly away from said work tool so as to at least partially overlap said lateral bearing region in said axial direction thereby hindering an accumulation of said long fibrous material at said lateral bearing region;
- wherein said work tool is a processing roller which is driveable in rotation about said rotational axis and said longitudinal end is a first longitudinal end;
- said work tool includes a first carrier plate defined by said end plate and said work tool has a second longitudinal end;
- and, said work tool further includes:
- a second carrier plate at said second longitudinal end perpendicular to said rotational axis;
- a plurality of tool carriers attached to said carrier plates so as to be supported therebetween so as to lie on an attachment circle having an attachment diameter (DB);
- said first and second carrier plates each having an outer diameter (DA) which is slightly greater than said attachment diameter (DB);
- and,
- said roll-up protective ring being a first roll-up protective ring and being flush with an inner diameter (DI) thereof on the outside to said outer diameter (DA) of said first carrier plate.
14 more elements
Dependencies are inferred from the claim text.