Lubricant dosing pump and dosing method with two pistons movable with respect to one another
AssigneeWilly Vogel AG
InventorsDieter Schoenherr, Friedrich Bauer
Life of this patent
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AssigneeWilly Vogel AG
InventorsDieter Schoenherr, Friedrich Bauer
Estimating the term…
A method and a lubricant dosing pump for accurately dosing the small lubricant quantities. It is provided that at least two pistons are moved from an initial position relative to one another, thereby enlarging a dosing volume situated between them, and that thereby lubricant is conveyed through an inlet into the closing volume. Subsequently, the inlet is sealed and the two pistons situated opposite to each other in the stroke direction are moved together with the dosing volume until in a discharge position the dosing volume is connected with a discharge opening spaced apart from the inlet in the stroke direction. Then, the pistons are moved relative to each other, thereby reducing the dosing volume, and convey a predetermined dosing quantity of the lubricant through the discharge opening. Finally, the pistons are moved back into their initial positions.
Method for accurately dosing a lubricant, wherein a first piston is moved from an initial position relative to a second piston, at the same time enlarging a dosing volume situated between the first and second pistons, and thereby the lubricant is conveyed through an inlet into the dosing volume, subsequently the inlet is sealed and the first and the second pistons with the dosing volume are moved towards a discharge opening until in a discharge position the dosing volume is connected to the discharge opening, then at least one of the first and the second pistons is moved relative to the other of the first and the second pistons, at the same time reducing the dosing volume, and a predetermined dosing quantity of the lubricant is conveyed through the discharge opening, and finally the first and the second pistons are moved back into their initial positions, wherein hydraulic pressure is directly applied to a drive surface on at least one of the first and the second pistons to drive the at least one of the first and second pistons.
A device comprising:
A method for accurately dosing a lubricant, comprising:
Dependencies are inferred from the claim text.