Metering device for lubricant

Details Metering device for lubricant Metering device for lubricant

2007-06-12

2007-06-12

Johnson, Vicky A. (Department: 3682)

Lubrication

Systems

With measuring or metering value system

Reexamination Certificate

active

10476045

ABSTRACT:
The invention relates to a metering device for lubricant having a lubricant reservoir (1), a piston (3), which is arranged on a threaded spindle (2), within the lubricant reservoir and a drive head4, which has a drive shaft (7) connected to the threaded spindle (2) and an electromechanical drive (5) for actuating the drive shaft. The drive shaft (7) contains a lubricant passage duct (8) which opens into the lubricant storage space of the lubricant reservoir. A ram (9) is inserted into the lubricant passage duct (8) of the drive shaft, said ram having an axial bore (10) with a nonreturn valve (11) on the inlet side, and also a ram head (13) which is arranged in a rotationally fixed manner and is loaded by a compression spring (12). The ram head (13) bears under the effect of the compression spring (12) against a control surface (14) of the drive shaft (7). The control surface (14) and the associated contact surface of the ram head (13) are designed as slotted-guide surfaces which, when the control surface (14) rotates, bring about stroke movements of the ram (9), said movements conveying lubricant through the bore (10) in the ram (9) to a lubricant outlet at the end of the ram.

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