Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
August 9, 2011
Patent Application Number
10552532
Date Filed
April 12, 2005
Patent Primary Examiner
Patent abstract
An electric compressor includes a shaft with a forward leading groove and a reverse leading groove both engraved on its outer wall. When a motor rotates forward, the forward leading groove pumps up lubricant through a centrifugal pump thereby lubricating sliding sections of the compressor. The reverse leading groove has a lead directing opposite to that of the forward leading groove, and when the motor rotates reversely due to some reason, the reverse leading groove pumps up the lubricant through the centrifugal pump thereby lubricating the sliding sections.
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