Bearing system including lubricant circulation apparatus

Bearings – Rotary bearing – Plain bearing

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384406, F16C 3366

Patent

active

057330484

ABSTRACT:
A bearing system includes a lubricant circulation apparatus to provide a continuous supply of lubricant fluid to a bearing device. The bearing device may be a hydrodynamic sleeve bearing having a bearing housing defining a sump for maintaining lubricant fluid therein. An oil ring may be situated about the mechanical shaft supported by the bearing device to deposit oil on top of the shaft during rotation. In addition, a bearing inlet is defined at a location radially above the shaft, with a bearing outlet being defined at a location radially below. The bearing outlet is in fluid communication with a reservoir of the lubricant circulation apparatus. A pump communicates with the reservoir to draw lubricant fluid therefrom and deliver it to the bearing inlet. Preferably, the pump draws lubricant fluid from the reservoir at a rate greater than can be passed through the bearing housing. In this case, a diverter mechanism, which may comprise a relief valve and a needle valve, may be provided to divert an excess flow from the pump back to the reservoir. A filter may be provided to remove impurities from the lubricant fluid prior to being pumped to the bearing housing. A pressure gauge may also be provided to indicate pressure in the fluid line at a location operatively behind the filter.

REFERENCES:
patent: 1588251 (1926-06-01), McNab
patent: 4699575 (1987-10-01), Geisel et al.
patent: 4898262 (1990-02-01), Gorodissky et al.
Brochure entitled: "Dodge Circulating Oil Systems For Dodge Sleeveoil Hydrodynamic Bearing Systems," published by Reliance Electric Company, Greenville, South Carolina, dated 1993.

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