Chain drive system

Endless belt power transmission systems or components – Positive drive pulley or guide roll – Having nonmetallic component

Patent

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Details

F16H 5506

Patent

active

048677337

ABSTRACT:
A chain drive system is provided having a metallic chain and a metallic sprocket, both meshing with each other. The sprocket is constituted by a double ply or pair of members of the same radius, each having a number of teeth formed at the same pitch on the outer peripheries thereof. An elastic member is held between at least the tooth portions in the chain-mating portions of these ply members. A part of the elastic member projects radially outwardly from at least the bases of the root portions of the split-member defined sprocket to function as elastomeric buffers.
The sprocket may include roller portions capable of making meshing contact with the sprocket teeth. A shaft portion supports each roller portion. Elastic rings member may be formed round the shaft portions so as to project radially outwards beyond the outer periphery of the roller portions.
Portions of the elastic member may project transversely through sprocket wall openings and merge with buffer rims.
Elastic tooth root buffers may be radially and laterally, relatively larger in the base portions of the tooth roots, as opposed to the lateral portions.

REFERENCES:
patent: 4348199 (1982-09-01), Oonuma et al.

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