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US 2026/0079035 A1Published application
Piston for dosing pump
OwnerThomas STEGMAIERinventor
Life of this patent
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Abstract
A dosing piston for a dosing pump has a generally cylindrical piston body extending along an axis. A flexible seal body is fitted to but separate from the piston body, forms part of an outer surface of the piston body, and forms with the piston body an annular compartment. A seal ring is formed on and projects radially outward from the seal body, and an elastic biasing element in the annular compartment bears radially inward on the piston body and radially outward on the seal body at the seal ring.
Claims19
A dosing piston for a dosing pump, the piston comprising:
- a generally cylindrical piston body extending along an axis;
- a flexible seal body fitted to but separate from the piston body, forming part of an outer surface of the piston body, and forming with the piston body an annular compartment;
- a seal ring formed on and projecting radially outward from the seal body level with the compartment;
- and
- an elastic biasing element in the annular compartment bearing radially inward on the piston body and radially outward on the seal body at the seal ring.
2 more elements
Dependencies are inferred from the claim text.