Chainring
AssigneeSram, LLC
InventorsMarkus Reiter, Raymond Florczyk, Henrik Braedt
Life of this patent
Estimating the term…
Abstract
A solitary chainring of a bicycle front crankset for engaging a drive chain, including a plurality of teeth formed about a periphery of the chainring, the plurality of teeth consisting of an even number. The plurality of teeth includes a first group of teeth and a second group of teeth arranged alternatingly between the first group of teeth. The first group of teeth and the second group of teeth are equal in number. Each of the first and second group of teeth include an outboard side and an inboard side opposite the outboard side and each tooth of the first group of teeth includes at least a first protrusion on the outboard side thereof and each tooth of the second group of teeth are free of the first protrusions on the outboard side and the inboard side.
Claims26
A bicycle chainring for engagement with a drive chain, comprising:
- a plurality of teeth formed about a periphery of the chainring, the plurality of teeth including a first group of teeth and a second group of teeth, each of the first group of teeth wider than each of the second group of teeth and at least some of the second group of teeth arranged alternatingly and adjacently between the first group of teeth, wherein each of the plurality of teeth includes a tooth tip;
- wherein a plane bisects the chainring into an outboard side and an inboard side opposite the outboard side;
- and
- wherein at least the majority of the tooth tip of at least one of each of the first and second groups of teeth is offset from the plane in a direction toward the outboard side of the chainring.
A bicycle chainring for engagement with a drive chain, comprising:
- a plurality of teeth formed about a periphery of the chainring, the plurality of teeth including a first group of teeth and a second group of teeth, each of the first group of teeth wider than each of the second group of teeth and at least some of the second group of teeth arranged alternatingly and adjacently between the first group of teeth, wherein each of the plurality of teeth includes a tooth tip;
- wherein a plane bisects the chainring into an outboard side and an inboard side opposite the outboard side;
- and
- wherein at least the majority of the tooth tip of at least one of each of the first and second groups of teeth is offset from the plane in a direction toward the inboard side of the chainring.
A bicycle chainring for engagement with a drive chain, comprising:
- a plurality of teeth formed about a periphery of the chainring, the plurality of teeth including a first group of teeth and a second group of teeth, each of the first group of teeth wider than each of the second group of teeth and at least some of the second group of teeth arranged alternatingly and adjacently between the first group of teeth, wherein each of the plurality of teeth includes a tooth tip;
- an outboard side of the chainring and an inboard side of the chainring opposite the outboard side;
- the outboard side of the chainring including an outboard side surface, wherein a portion of the outboard side surface forms a plane;
- the inboard side of the chainring including an inboard side surface, wherein a portion of the inboard side surface forms a plane;
- and
- wherein at least the majority of the tooth tip of at least one of each of the first and second groups of teeth is disposed closer to the plane formed by the outboard side surface than to the plane formed by the inboard side surface.
A bicycle chainring for engagement with a drive chain, comprising:
- a plurality of teeth formed about a periphery of the chainring, the plurality of teeth including a first group of teeth and a second group of teeth, each of the first group of teeth wider than each of the second group of teeth and at least some of the second group of teeth arranged alternatingly and adjacently between the first group of teeth, wherein each of the plurality of teeth includes a tooth tip;
- an outboard side of the chainring and an inboard side of the chainring opposite the outboard side;
- the outboard side of the chainring including an outboard side surface, wherein a portion of the outboard side surface forms a plane;
- the inboard side of the chainring including an inboard side surface, wherein a portion of the inboard side surface forms a plane;
- and
- wherein at least the majority of the tooth tip of at least one of each of the first and second groups of teeth is disposed closer to the plane formed by the inboard side surface than to the plane formed by the outboard side surface.
Dependencies are inferred from the claim text.