Conveyors: power-driven – Conveyor having impinging fluid to feed – shift or discharge... – Having lubricating means
Patent
1998-03-09
2000-08-08
Ellis, Christopher P.
Conveyors: power-driven
Conveyor having impinging fluid to feed, shift or discharge...
Having lubricating means
198851, 474 91, B65G 4502, B65G 4508
Patent
active
060987871
ABSTRACT:
A conveyor chain using an oil impregnated sintered bushing is provided. The conveyor chain using the oil impregnated bushing is high in durability and low in manufacturing cost. A roller is rotatably fitted over the oil impregnated sintered bushing of the conveyor chain. An abrasion loss of the outer peripheral surface of the oil impregnated sintered bushing and an abrasion loss of the inner peripheral surface of the roller are reduced. Furthermore, both sliding noises and burning, which are normally generated between the roller and the oil impregnated sintered bushing, can be prevented. The conveyor chain, which uses an oil impregnated sintered bushing including a roller rotatably fitted over the oil impregnated sintered bushing, is characterized in that the oil impregnated sintered bushing has a sintering density in the range of from approximately 6.0 g/cm.sup.3 to 7.1 g/cm.sup.3. The conveyor chain is further characterized in that at least an inner peripheral surface of the roller is in contact with an outer peripheral surface of the oil impregnated sintered bushing and the outer peripheral surface of the oil impregnated bushing is formed of resin.
REFERENCES:
patent: 4915511 (1990-04-01), Kotegawa et al.
patent: 4995852 (1991-02-01), Takahashi et al.
patent: 5454501 (1995-10-01), Konno et al.
Crawford Gene O.
Ellis Christopher P.
Tsubakimoto Chain Co.
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