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US 2016/0257376 A1Published application
Sprocket wheel for a bicycle drive
AssigneeSRAM Deutschland GmbH
InventorsPHILIPP HÖLLE, SEBASTIAN REINEKE, ANDREAS VONEND
Life of this patent
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Abstract
A sprocket wheel for a bicycle includes a first main surface, which is flat in one or more sections, and a second main surface, which is situated opposite the first main surface. The second main surface is flat in one or more sections and extends parallel to the first main surface in one or more sections. The sprocket wheel also has an outer circumferential surface, which connects the first and the second main surface to one another and on which toothing is provided.
Claims22
A sprocket wheel for a bicycle drive, comprising:
- a first main surface which is flat in at least one section;
- a second main surface disposed opposite the first main surface, the second main surface flat in at least one section and extending parallel to the first main surface in at least one section, the first and the second main surfaces each comprising a flat first area and a flat second area, the second area offset axially relative to the first area and connected to the first area by one or more transitional sections, the first area of the first main surface arranged opposite the first area of the second main surface, in at least one section, and the second area of the first main surface arranged opposite the second area of the second main surface, in at least one section;
- and
- an outer circumferential surface which connects the first and the second main surfaces to one another and on which toothing is provided,
- wherein the sprocket wheel can be stacked on another sprocket wheel of the same configuration in such a way that the first area of the first main surface of the sprocket wheel rests over an extended area on the first area of the second main surface of the other sprocket wheel, and the first main surface of the sprocket wheel rests over an extended area of the second area of the second main surface of the other sprocket wheel.
2 more elements
A multi-sprocket arrangement for a bicycle drive, comprising a plurality of sprocket wheels, which are mounted upon one another for conjoint rotation, at least one of the sprocket wheels of the plurality of sprocket wheels comprising:
- a first main surface which is flat in at least one section;
- a second main surface disposed opposite the first main surface, the second main surface flat in at least one section and extending parallel to the first main surface in at least one section, the first and the second main surfaces each comprising a flat first area and a flat second area, the second area offset axially relative to the first area and connected to the first area by one or more transitional sections, the first area of the first main surface arranged opposite the first area of the second main surface, in at least one section, and the second area of the first main surface arranged opposite the second area of the second main surface, in at least one section;
- and
- an outer circumferential surface which connects the first and the second main surfaces to one another and on which toothing is provided,
- wherein the sprocket wheel can be stacked on another sprocket wheel of the same configuration in such a way that the first area of the first main surface of the sprocket wheel rests over an extended area on the first area of the second main surface of the other sprocket wheel, and the first main surface of the sprocket wheel rests over an extended area of the second area of the second main surface of the other sprocket wheel.
2 more elements
A method for heat treating sprocket wheels, the method comprising:
- stacking a plurality of sprocket wheels, at least one of the plurality of sprocket wheels comprising,
- a first main surface which is flat in at least one section;
- a second main surface disposed opposite the first main surface, the second main surface flat in at least one section and extending parallel to the first main surface in at least one section, the first and the second main surfaces each comprising a flat first area and a flat second area, the second area offset axially relative to the first area and connected to the first area by one or more transitional sections, the first area of the first main surface arranged opposite the first area of the second main surface, in at least one section, and the second area of the first main surface arranged opposite the second area of the second main surface, in at least one section;
- and
- an outer circumferential surface which connects the first and the second main surfaces to one another and on which toothing is provided,
- wherein the sprocket wheel can be stacked on another sprocket wheel of the same configuration in such a way that the first area of the first main surface of the sprocket wheel rests over an extended area on the first area of the second main surface of the other sprocket wheel, and the first main surface of the sprocket wheel rests over an extended area of the second area of the second main surface of the other sprocket wheel;
- and
- heat treating the stacked plurality sprocket wheels.
5 more elements
Dependencies are inferred from the claim text.