Low noise roller chain

Details Low noise roller chain Low noise roller chain

1997-08-29

1999-07-13

Jeffery, John A.

Endless belt power transmission systems or components

Positive drive belt

Belt formed of rigid links

474212, 474231, F16G 1302, F16G 1304

Patent

active

059218800

ABSTRACT:
A low noise chain has a bushing provided with a substantially cylindrical large diameter portion in an outer periphery of a central portion thereof. Inner plates are mounted respectively on opposite ends of the bushing. A hollow thin cylindrical roller, having inner peripheral surfaces opposed across a clearance, is capable of forming an oil film layer relative to an outer peripheral surface of the large diameter portion. The hollow thin cylindrical roller is rotatably externally fitted on the external outer peripheral surface of the bushing between the inner plates on opposite sides. A pair of O-rings is provided for sealing a clearance between both outer portions of the large diameter portion of the outer peripheral surface of the bushing and the inner peripheral surface of the hollow thin cylindrical roller. Outer plates are arranged on both outer sides of the inner plates on opposite sides. A chain pin rotatably extends through the bushing and has both ends mounted on the outer plates on both sides. Lubricating oil is sealed in a clearance formed between the pair of O-rings, the inner peripheral surface of the hollow thin cylindrical roller and the outer peripheral surface of the bushing. Thus, the low noise roller chain can obtain improved noise reducing effects.

REFERENCES:
patent: 1925055 (1933-08-01), Mize
patent: 1965145 (1934-07-01), Klauke
patent: 3620578 (1971-11-01), Fix
patent: 3948574 (1976-04-01), Baylor
patent: 4123947 (1978-11-01), Smith et al.
patent: 4199199 (1980-04-01), Granda
patent: 4494945 (1985-01-01), Ogino
patent: 4668025 (1987-05-01), MacDonald
patent: 4729754 (1988-03-01), Thuerman

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