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US 10,518,958 B2Granted
Cartridge with reduced friction
AssigneeSulzer Mixpac AG
InventorsFlorian Senn, Victor Clemens
Life of this patent
Estimating the term…
Abstract
A cartridge fillable or filled with a dispensable medium for dispensing the medium by movement of a piston receivable or received in the cartridge has a sliding surface for the piston to slide along during the movement of the piston. The sliding surface has a microstructure for reducing the friction between the piston and the sliding surface.
Claims20
A cartridge fillable or filled with a dispensable medium for dispensing the medium by movement of a piston receivable or received in the cartridge, the cartridge comprising:
- a sliding surface for the piston to slide along during the movement of the piston, the sliding surface having a microstructure configured to reduce friction between the piston and the sliding surface,
- the microstructure formed by a plurality of protrusions, a height of a respective protrusion being defined in a direction perpendicular to the sliding surface and a width of a respective protrusion being defined in a direction perpendicular to the height of the protrusion and to a sliding direction of the piston.
Dependencies are inferred from the claim text.