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US 2020/0003292 A1Published application
Sprocket with vibration absorption properties
AssigneeBorgWarner Inc.
InventorMatthew W. Crump
Life of this patent
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Abstract
Provided is a sprocket having a body formed by a powder metallurgy process with a predetermined density and vibration energy absorbing properties, and teeth with a greater density than the density of the body, and a method of making the same. The sprocket minimizes mechanical vibration during a chain-to-sprocket tooth contact. The teeth of the sprocket have a higher density than the body of the sprocket.
Claims22
A method of forming a sprocket, the method comprising the steps of:
- compressing metal powder into a predetermined density solid to form a circular body;
- and
- impregnating a vibration energy absorption material into pores of the circular body.
A vibration energy absorption sprocket, comprising:
- a circular metal body having a first density and including a vibration energy absorbing material impregnated into pores therein;
- and
- metal teeth surrounding an outer circumference of the circular metal body and having a second density greater than the density of the circular metal body.
A vibration energy absorption sprocket, comprising:
- a circular metal body having a first density and including vibration energy absorbing properties therein;
- and
- a ring of metal teeth surrounding an outer circumference of the circular metal body and having a second density greater than the first density of the circular metal body.
Dependencies are inferred from the claim text.