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US 6,273,836 B1Granted
Chain sprocket with axial stiffeners
OwnerSpencer J. Thompsoninventor
Life of this patent
Estimating the term…
Abstract
A chain sprocket includes a disc-like base having an outer rim with teeth on an outer periphery thereof, a hub having a crank arm-accepting slot formed therein, and a plurality of spokes extending radially from the hub to the outer rim. Stiffening fins are formed integrally with at least some of the spokes. The stiffening fins extend axially from one side of the base, have a greatest axial dimension adjacent to the hub, and taper towards the outer rim to provide the sprocket with axial reinforcement.
Claims20
A chain sprocket, comprising:
- a disc-like base including an outer rim having teeth on an outer periphery thereof, a hub, and a plurality of spokes extending radially from the hub to the outer rim;
- and
- stiffening fins formed integrally with at least some of the spokes, the stiffening fins extending axially from the respective spokes.
A bicycle, comprising:
- a frame;
- front and rear wheels attached to the frame;
- and
- a chain drive system interconnected between the frame and the rear wheel, the chain drive system including a chain sprocket comprising a disc-like base including an outer rim having teeth on an outer periphery thereof, a hub, and a plurality of spokes extending radially from the hub to the outer rim, and stiffening fins formed integrally with at least some of the spokes, the stiffening fins extending axially from the respective spokes.
1 more element
A bicycle, comprising:
- a frame;
- front and rear wheels attached to the frame;
- and
- a chain drive system interconnected between the frame and the rear wheel, the chain drive system including a chain sprocket comprising a disc-like base including an outer rim having teeth on an outer periphery thereof, a hub having a crank arm-accepting slot formed therein, and a plurality of spokes extending radially from the hub to the outer rim, and stiffening fins formed integrally with at least some of the spokes, the stiffening fins extending axially from one side of the base, and having a greatest axial dimension adjacent to the hub and tapering towards the outer rim.
1 more element
Dependencies are inferred from the claim text.