Schaeffler Technologies Ag & Co .kg

Ina Schaeffler Kg

Barbara Pluta

Stefan Dorn

Christoph Ross

Josef Groschel

Alexander Fichtner

Holger Patzold

Hubert Burkard

Thomas Fritsch

Philipp Bittel

A control valve for a hydraulic device, in particular a central valve of a camshaft adjuster for a reciprocating-piston internal combustion engine, having a holding component () in which a valve housing (), a control sleeve () and a control piston () are arranged, wherein the control piston () is mounted so as to be loaded on one side by a spring and, on the other side, is mounted with limited axial displaceability in the control sleeve () by means of a locking ring (), wherein the locking ring () can be fastened in the axial direction in an inner holder () on the holding component () and can be connected by a fixing device to a component of the control valve, and wherein the fixing device has fastening elements attached to the locking ring () and has matching recesses () in the valve housing () and/or in the control sleeve ().

Control valve for a hydraulic apparatus with locking facility

A non-return valve () having a sealing seat () having an opening () and also a resilient, flat closing element (), which covers the opening () in a closed position. In view of simple assembly of the non-return valve (), the closing element () and the sealing seat () are connected fixedly to one another and form a prefabricated structural unit ().

Non-return valve and hydraulic valve with a fitted non-return valve

A tappet ( ) for the transfer of a lifting motion to a sliding part is provided having two parts, including a circular shaped section ( ) with a base ( ) connected to it as one piece and a separate dome-shaped socket ( ) connected to the base ( ) made of thin-walled material with a contact surface ( ) for the sliding part. The tappet ( ), whose socket ( ) extends over a considerable length of the circular shaped section ( ), can be economically manufactured.

Tappet

Growing community of inventors

Eggolsheim, Germany

Barbara Pluta