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US 8,505,439 B2Granted
Pneumatic component
AssigneeWABCO GmbH
InventorsJens-Thorsten Gronau, Mike Heurich, Tino Wiggers
Life of this patent
Estimating the term…
Abstract
A pneumatic component includes a cylinder, a piston running in the cylinder, and a grooved ring. The grooved ring seals the piston from the cylinder, and has a static side and a dynamic side. The static side of the grooved ring has at least two concentric microlips.
Claims15
A pneumatic component, comprising:
- a cylinder;
- a piston in said cylinder, wherein said piston comprises a longitudinal mold parting flash;
- and
- a grooved ring sealing said piston with respect to said cylinder, said grooved ring including a static side and a dynamic side, said static side having at least two concentric microlips, wherein said grooved ring is fastened to said piston with said longitudinal mold parting flash intersecting said at least two concentric microlips.
1 more element
A method of producing a pneumatic component, comprising the steps of:
- (a) producing a cylinder casing in which a cylinder is formed;
- (b) injection molding a piston having a radially circumferential groove and a longitudinal mold parting flash;
- (c) producing a grooved ring having a static side and a dynamic side, said static side having at least two concentric microlips;
- and
- (d) inserting said grooved ring into said groove, said longitudinal mold parting flash intersecting said at least two concentric microlips.
2 more elements
Dependencies are inferred from the claim text.