Daimler-benz Ag

Klaus Luttge

Jurgen Pickard

Helmut Sandner

Georg Eltze

Hans Rubmann

A piston for actuating a brake-band end of a transmission band system includes a piston for actuating a band in a transmission. The piston includes a piston body, and an elongated guide shaft having a proximal end fixed to one side of the piston body and a distal end defining a first annular support surface. The guide shaft is formed to include an axial bore having an opening in the first annular support surface. The piston further includes a piston rod having an outer end for engaging the transmission band, an inner end for reception in the axial bore, and a second annular support surface situated to confront the first annular support surface when the inner end of the piston rod is received in the axial bore of the elongated guide shaft. An O-ring is positioned along the inner end of the piston rod, to retain the inner end within the axial bore of the elongated shaft. At least one spacer mean is situated intermediate the first and second annular support surfaces to separate the annular support surfaces to vary the effective length of the piston rod.

Piston of a pressure-medium actuator with a piston rod of adjustable

In a multi-disc clutch or brake, several lamellae in the form of annular discs cannot only be fixed essentially non-rotatably, relative to a lamella carrier fixed in terms of rotation in relation to one of the two clutch or brake parts, by means of a releasable positive connection but can also each be supported radially exclusively at an individual point on the lamella carrier, each by means of its own resilient clamping means, the clamping means being retained on the lamella carrier. At least one central annular gap located, in the peripheral direction of the axis of rotation, between two engaging teeth of the positive connection and open in the two directions of the axis of rotation is limited radially in one directions by a cylindrical shell portion of a lamella and in the other direction by a cylindrical shell portion of the lamella carrier. The engagement surface of the clamping means, used for the purpose of support, is located in the annular gap and interacts with the shell portion of the lamella. So that even thinner lamellae can be used, the two clamping means for two lamellae succeeding one another in the directions of the axis of rotation are arranged on different legs of a comb-shaped holder. Each leg of the holder can be inserted into a separate annular gap.

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Fellbach, Germany

Klaus Luttge