Pivoting chainring assembly
First Claim
1. A carrier for a chainring of a bicycle, the carrier comprising:
- a chainring attachment portion;
a crank assembly attachment portion, the chainring attachment portion and the crank assembly attachment portion configured to rotate about a crank axis and transmit torque between the crank assembly attachment portion and the chainring attachment portion; and
a pivot attachment portion having a pivot axis disposed a distance from the crank axis, the chainring attachment portion and the crank assembly attachment portion configured to rotate about the pivot axis and the crank axis.
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Accused Products
Abstract
A pivotable chainring assembly for a bicycle includes a chainring and a carrier. The carrier includes an annular bearing and a pivot attachment portion. The annular bearing includes an inner race and an outer race. The outer race of the annular bearing is rotatable about a crank axis. The chainring is physically connected to and rotatably fixed relative to the outer race of the annular bearing. The inner race of the annular bearing is physically connected to and rotationally fixed relative to the pivot attachment portion. The pivot attachment portion has a pivot axis disposed a distance from the crank axis. The chainring is rotatable about the crank axis and rotatable about the pivot axis.
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Citations
27 Claims
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1. A carrier for a chainring of a bicycle, the carrier comprising:
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a chainring attachment portion; a crank assembly attachment portion, the chainring attachment portion and the crank assembly attachment portion configured to rotate about a crank axis and transmit torque between the crank assembly attachment portion and the chainring attachment portion; and a pivot attachment portion having a pivot axis disposed a distance from the crank axis, the chainring attachment portion and the crank assembly attachment portion configured to rotate about the pivot axis and the crank axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A crankset for a bicycle, the crankset comprising:
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a crank assembly including a first crank arm, a second crank arm, and a crankshaft connecting the first crank arm and the second crank arm when the crankset is assembled; and a chainring assembly including; a chainring including a plurality of teeth disposed about a periphery of a body of the chainring, the chainring having an opening through which the crankshaft extends, the chainring configured to rotate about a crank axis; a carrier including a pivot having a pivot axis, the chainring being rotatably attached to the carrier about the crank axis such that the chainring is also configured to rotate about the pivot axis, wherein the pivot axis is at a distance removed from the crank axis. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A chainring assembly for a bicycle, the chain ring assembly comprising:
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a chainring including a plurality of teeth disposed about a periphery of a body of the chainring, the chainring configured to rotate about a crank axis; a carrier including; a chainring attachment portion; a crank assembly attachment portion, the chainring attachment portion and the crank assembly attachment portion configured to rotate about the crank axis and transmit torque between the crank assembly attachment portion and the chainring attachment portion; and a pivot attachment portion having a pivot axis disposed a distance from the crank axis, the chainring attachment portion and the crank assembly attachment portion configured to rotate about the pivot axis and the crank axis.
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Specification