Festo Ag & Co. Kg

Festo Se &co. Kg

Harald Röhrig

Ulrich Kees

Andreas Weisang

Kurt Stoll

A fluid-actuated diaphragm drive and a valve arrangement which is equipped therewith, wherein the diaphragm drive has a drive housing with two drive housing parts which are attached to one another axially. An insert body which preferably consists of plastic material and delimits at least one length section of an operating chamber which can be loaded with a fluid is inserted into each of the drive housing parts, wherein a drive diaphragm which is movement-coupled to an output member is clamped in between the two insert bodies. A seal structure which is active between at least one of the insert bodies and the drive housing is capable of preventing an axial flow around the two insert bodies in the region which lies radially between them and the drive housing.

Fluid-actuated diaphragm drive, and valve arrangement which is equipped therewith

An operating unit for a fluid-operated diaphragm actuator, the unit consisting of a drive diaphragm, two retaining elements flanking the drive diaphragm on opposite sides and an output rod extending through these components. The drive diaphragm is mounted on the output rod by being clamped between the two retaining elements with a predetermined clamping force, wherein each of the two retaining elements is fixed on the output rod by means of a welded connection. A method that is particularly suitable for producing such an operating unit and to a fluid-operated diaphragm actuator equipped with such an operating unit.

Operating unit for a fluid-operated diaphragm actuator and method for the production thereof and diaphragm actuator equipped therewith

A connection device for fluid lines has an annular or sleeve-shaped insert provided for assembly by plugging in a circularly cylindrical socket in a support component. The insert comprises an annular or sleeve-shaped cage element () in the form of a metal bent stamping with an annular support section () having several claw elements () and several support legs () extending from the support section in the same axial direction. The claw elements () serve for securing an inserted fluid line and the support legs () serve for supporting a preceding seal.

Connecting device for a fluid line

A coupling device for a fluid line has a collet and an axially movable actuating sleeve serving for operation of the collet. The collet bears several gripping teeth with associated actuating portions able to be acted on by actuating faces on the actuating sleeve in order to hold the inserted fluid line. In the non-operated state of the actuating sleeve there are at least partly different distances between the mutually associated actuating portions and actuating faces so that on actuation of the actuating sleeve several actuating portions of the collet are acted on one after the other. This means that the necessary actuating force is reduced.

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Spiesen-Elversberg, Germany

Harald Röhrig