Lubricating device

US7845470B2 · kind B2 · utility

Assignee

• HYDAC FILTERTECHNIK GMBH · DE

Inventors

• Michael Smolong · Hamburg, DE
• Roland Herber · Saarburg, DE
• Armin Schmidt · Zeulenroda, DE

Key dates

• Filing date: Feb 5, 2004
• Grant date: Dec 7, 2010
• Expiry date: Jan 6, 2027

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/19991
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A lubricating device for gear trains (10), especially for wind power stations, includes at least two gear stages (16,18) that are disposed next to each other and are effectively interconnected, and a lubricant circuit (20) into which at least one filter unit (26) is mounted. To prevent stagnant resting zones for the lubricant from being created within the gear train housing including the gear stages, while ensuring that the entire lubricant that circulates in the gear stages is fed to the filter unit to be drawn off and filtered within predefined periods of time, the lubricant circulating inside the lubricant circuit (20) is discharged at one gear stage (18), is drawn off through the filter unit, and can then be fed to the other gear stage (16).