Lubricant dispenser
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Aug 5, 2003
Grant Date -
Jun 27, 2002
app pub date -
Oct 18, 2001
filing date -
Dec 7, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A lubricant dispenser comprising a housing, a lubricant supply container, a plunger, a telescopic hollow spindle, and an electromechanical servo-drive for changing the length of the telescopic hollow spindle. One end of the telescopic hollow spindle is fixed on the housing. With its other end, the telescopic hollow spindle cooperates with a plunger containing a passage opening for lubricant. The telescopic hollow spindle has a lubricant passage channel in which at least one check valve is arranged on the inlet side. The telescopic hollow spindle alternately carries out setting strokes of different lengths that increase or reduce the length of the spindle. The setting strokes are coordinated with each other so that with a setting stroke of the telescopic hollow spindle increasing the length of the spindle, a preset amount of lubricant displaced by the movement of the plunger enters the lubricant passage channel through the opening check valve.
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