Device for sealing escalator or moving walkway drives
AssigneeKone Corporation
InventorAlfred Thiel
Life of this patent
Estimating the term…
Abstract
The invention relates to an escalator or moving walkway that includes a drive shaft rotating at a relatively low peripheral speed around a horizontal axis and at least one sealing element associated with the drive shaft. Lubricant is supplied to the drive shaft and can escape from leakages at the one sealing element. A device is provided for a permanent recirculation of the lubricant escaping from the leakages. The device includes at least one conveyor element arranged downstream of the sealing element, seen in the direction of the leakage, and at least one recirculation element for the lubricant. The recirculation element cooperates with the conveyor element to return the lubricant into a region upstream of the at least one sealing element.
Claims17
In an escalator or moving walkway including a drive shaft rotating at a relatively low peripheral speed around a horizontal axis and at least one sealing element associated with the drive shaft, wherein lubricant is supplied to the drive shaft and escapes from leakages at the at least one sealing element, the improvement comprising:
- a device for a permanent recirculation of the lubricant escaping from the leakages, the device including at least one conveyor element arranged downstream of the sealing element, seen in the direction of the leakage, and at least one recirculation element for the lubricant, the recirculation element cooperating with the conveyor element to return the lubricant into a region upstream of the at least one sealing element.
An apparatus comprising:
- a shaft for rotating around a horizontal axis;
- at least one sealing element associated with the shaft, wherein lubricant is supplied to the shaft and escapes from leakages at the sealing element;
- a conveyor element arranged behind the sealing element, seen in the direction of the leakage;
- and
- a recirculation element for the lubricant escaping from leakage at the sealing element, the recirculation element cooperating with the conveyor element to return the lubricant into a region upstream of the sealing element.
Dependencies are inferred from the claim text.