Low noise chain

Details Low noise chain Low noise chain

1997-09-03

1999-08-17

Jeffery, John A.

Endless belt power transmission systems or components

Positive drive belt

Belt formed of rigid links

474212, F16G 1302, F16G 1304

Patent

active

059385537

ABSTRACT:
A barrel-shaped coil spring roller is formed by closely winding spring wire rods having fine crepe-like concave-convex surfaces on the surface of the barrel-shaped coil spring roller. The fine crepe-like concave-convex surfaces serve as a lubricating oil reservoir and are formed by a shotpeening process. Lubricating oil is retained on the fine crepe-like concave-convex surfaces formed by the shot-peening process. Sliding noises between the spring wire rods adjacent to each other, which noises are generated by elastic deformation of the barrel-like coil spring roller when in engagement with the toothed surface of the sprocket, are reduced by the lubricating oil. The wear on both of the barrel-shaped coil spring roller and the sprocket is lessened and the power loss is reduced. The low noise chain is capable of retaining a lubricating oil on the surface of spring wire rods of a barrel-shaped coil spring roller for long periods of time, while still maintaining a noise reduction effect.

REFERENCES:
patent: 1737150 (1929-11-01), Davis
patent: 1894600 (1933-01-01), Schmidt
patent: 2129407 (1938-09-01), Dalrymple
patent: 2909938 (1959-10-01), Sharp
patent: 3178239 (1965-04-01), Zeller
patent: 4690665 (1987-09-01), Oliver et al.
patent: 4766997 (1988-08-01), Hannum

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