Patent ID: 8544610
Filing Date: 2013-10-01
Classification: F16N

Abstract:
1. A lubricant dispenser comprising, a lubricant reservoir, a reservoir outlet, and an outlet channel for delivering lubricant to a dispenser outlet, as well as a pump element for conveying lubricant that is arranged between the reservoir and the outlet channel and features a piston that is sealed and guided in a cylinder such that it can be displaced upwardly and downwardly between two positions, with the cylinder being fluidically connected to the reservoir in an intake position, and with a cross-sectional surface of the piston being smaller than a cross-sectional surface of the reservoir, wherein the piston and the cylinder are adapted to one another in such a way that a negative pressure in comparison with the pressure in the reservoir can be generated in the cylinder during an upward movement of the piston toward the reservoir outlet into its intake position in order to draw or admit lubricant from the reservoir into the cylinder, and wherein a positive pressure can be generated in the cylinder during an opposite downward movement of the piston away from the reservoir outlet and out of its intake position in order to convey lubricant from the cylinder into the outlet channel.