Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
September 6, 2011
Patent Application Number
11991273
Date Filed
September 9, 2005
Patent Primary Examiner
Patent abstract
A greasing through hole is perforated through one outer link plate, and greasing device is attached to the through hole. Degreasing through-holes are perforated through an outer link plate or an inner link plate on the side distant from the outer link plate with a bearing section A between the link plates, and degreasing device 22 is attached to those through-holes. Lubricant injected from the greasing device is supplied to the bearing section A through a gap c between the sealing device and the outer link plate, and used lubricant within the bearing section A is discharged out of the degreasing device through another gap c.
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