Patent ID: 6845847
Filing Date: 2005-01-25
Classification: F01D

Abstract:
1. A lubrication system for a bearing of a machine, the lubrication system comprising: an oil tank for storing lubricant oil so that a tank oil level may be formed in the tank, the tank oil level positioned below the bearing; an oil supply pipe for supplying the lubricant oil from the oil tank to the bearing; an outlet pipe for guiding the lubricant oil from the bearing substantially vertically downward so that an outlet pipe oil level may be formed in the outlet pipe; an oil returning mother pipe for guiding the lubricant oil from the outlet pipe to the tank, the oil returning mother pipe including a substantially horizontal part and a weir disposed close to the tank so that substantially all portion of the substantially horizontal part may be maintained full of lubricant oil below the weir; and a vent pipe for communicating the outlet pipe above the outlet pipe oil level and the tank above the tank oil level.