Silent chain transmission device

Details Silent chain transmission device Silent chain transmission device

2005-03-29

2005-03-29

Charles, Marcus (Department: 3682)

Endless belt power transmission systems or components

Positive drive belt

Belt formed of rigid links

C474S157000, C074S461000

Reexamination Certificate

active

06872158

ABSTRACT:
In a transmission having a silent chain meshing with a sprocket, each link plate of the chain includes inside engaging surfaces and outside engaging surfaces having the same shape as that of a tooth profile of a hob cutter for shaping the sprocket teeth. The sprocket, which engages the outside engaging surfaces of the link plates when the chain is seated on the sprocket teeth, includes tooth head portions shaped to avoid contact interference with inwardly curved portions of the link plates. The silent chain transmission device controls the engagement time of the inside engaging surface, and thereby decreases vibration noise and impact noise, and prevents stress concentration and wear loss on the inside engaging surface, the inwardly curved inside portion of the link plate, and the tooth head portion of the sprocket, thereby improving durability, making assembly easier, and improving production accuracy.

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