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).

Abstract: The invention relates to a lubricating device for gear trains (10), especially for wind power stations, comprising 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. In order to prevent stagnant resting zones for the lubricant from being created within the gear train housing comprising the gear stages while ensuring that the entire lubricant that circulates in the gear stages is fed to the filter unit in order to be drawn off and filtered thereby within predefined periods of time, the lubricant circulating inside the lubricant circuit (30) is discharged at one gear stage (18), is drawn off by means of the filter unit, and then can be fed to the other gear stage (16).

Abstract: A hydraulic fluid pressure operated control mechanism for controlling of hydraulic systems has a housing with a flow through cross-sectional area restricted by a drill hole in an open position of the control mechanism and a seat engageable by a throttle device for restricting the flow through cross-sectional area in a closed or throttling position of the control mechanism. The inwroughted seat for the throttle device is located in the conical bottom of a bore and has the form of a frustum of a pyramid having a plurality of sides.