Journal bearing

• US 5,480,234 A
• Filed: 04/12/1995
• Issued: 01/02/1996
• Est. Priority Date: 08/15/1994
• Status: Expired due to Term

• Current Assignee: Ingersoll-Rand Company (Trane Technologies plc)
• Original Assignee: Ingersoll-Rand Company (Trane Technologies plc)
• Inventors: Chen, Wen-Jeng, Haugen, Ronald L.
• Primary Examiner(s): Footland, Lenard A.
• Application Number:
  US08/421,345
• Time in Patent Office: 265 Days
• Field of Search: 384/313, 384/398, 384/118, 384/399, 384/144, 384/99, 384/123, 384/397
• US Class Current: 384/313
• CPC Class Codes: F16C 17/02 for radial load only
• CPC Class Codes: F16C 2360/44 Centrifugal pumps
• CPC Class Codes: F16C 33/1065 Grooves on a bearing surface for distributing or collecting the liquid

Abstract

An improved journal bearing includes a first groove, in the direction of journal rotation, formed in the inner surface of the journal bearing. The first groove extends axially along the length of the bearing and has opposed, open groove ends. A second groove, in the direction of journal rotation, is formed in the inner surface of the journal bearing. The second groove extends axially along the length of the bearing and has opposed, closed ends. An orifice is provided for supplying a lubricant to the inner surface of the journal bearing. The lubricant supply orifice is disposed substantially centrally along the bearing length and intermediate the first and second grooves.

Claims

1. In a bearing of the type for supporting a rotatable journal about an axis of rotation, the bearing having an inner surface and opposed first and second ends which define a predetermined bearing length dimension, the improvement comprising:

means for leaking a predetermined volume of lubricant from an interior portion of the bearing, the lubricant leaking means including a groove formed in the inner surface of the bearing member, the groove extending continuously, axially along the length of the bearing, from the first end to the second end; and

means for mixing a volume of lubricant, the lubricant mixing means including a groove formed in the inner surface of the bearing member at a position after the lubricant leaking means in the direction of journal rotation, the groove having opposed, closed ends and extending axially along the length of the bearing, the lubricant mixing means having formed therein at least one orifice for supplying a lubricant to the interior portion of the bearing, the at least one lubricant supply orifice being disposed substantially centrally within the lubricant mixing means along the bearing length.