Firma Carl Freudenberg

Gunter Ullrich

Rainer H Andra

Herwig Honlinger

Winfried Ochs

Klaus Kurr

Bernhard Rohrig

Uwe Henrich

Georg Schafer

Rainer-Horst Andra

Werner Bauer

Udo Dorge

Friedrich Reinhold

A belt pulley with a substantially cup-shaped profile that is delimited on one side, in at least the axial direction, by an integrally shaped-on rim flange is disclosed. The rim flange is configured as the hub ring of a torsional vibration damper, the hub ring being connected, by means of a damping ring made of elastomeric material, to an inertial ring.

Belt pulley

A torsional vibration damper having a substantially cup-shaped hub ring made from deep drawn sheet metal. The base of the hub ring has at least one orifice for mounting the damper to a machine part subject to torsional vibrations, the hub ring being joined by at least one spring element made of an elastomeric material - in a manner allowing relative rotation - to at least one inertial ring. The base is provided with an annular centering collar, extending in the axial direction, which fits around the outer periphery of the machine part in partial contact. The centering collar and the base are configured integrally and continuously with one another.

Torsional vibration damper

Belt pulley having a substantially cup-shaped profile that is delimited on one side, at least in the axial direction, by an integrally shaped-on rim flange is disclosed. The rim flange is configured as the hub ring of a torsional vibration damper; the hub ring is connected, by a damping ring made of elastomeric material, to an inertial ring.

The disclosure teaches a piston engine having at least one reciprocating piston, a crankshaft rotatable within a support bracket, and a piston rod connecting the piston with the crankshaft, with an inertial mass mounted on the support bracket for movement with three degrees of freedom. A method for retrofitting a piston engine is also provided.

Piston engine

A rotational body is made of a deep-drawn sheet metal portion and has a hollow cylindrical center portion integral therewith which can be connected to a shaft. The sheet metal portion 1 and the center portion 2 are manufactured as one continuous piece. A metallic shrink-on sleeve 3 can immovably be affixed to the outer circumference of the center portion by shrink-fitting.

Rotational body

Process for manufacturing a torsional vibration damping device where a vulcanizable rubber mixture is placed in the interspace between a pot-like hub ring and an inertial ring. The hub ring is permanently expanded in radial direction following the vulcanization of the rubber mixture or the inertial ring is compressed towards the inside.

Process for manufacturing a torsional vibration damping device

A torsional vibration damper in which the hub ring and the flyring are interconnected through vulcanized-in basic resilient elements as well as resilient units made of rubber that are uniformly distributed around the circumference. These consist of columnar first and second resilient elements which at their outer surfaces merge into one another and at their inner surfaces are spaced from one another. The second resilient elements are precompressed by the first resilient elements and, when the torsional vibration damper is not rotating, are spaced at their outer surfaces from the inner surface of the flyring. At a desired speed of rotation, they are caused by centrifugal force to bear immovably on the inner surface of the flyring. This mechanical connection places their spring action in parallel with the spring action of the basic resilient elements.

A torsion-vibration damper comprising a driving ring and take-off ring that are rotatable relative to each other, segment chambers spaced from the axis of rotation, the chambers being bounded by the driving ring and the take-off ring and divided into subchambers by a partition, the subchambers being connected by at least one connecting opening and having at least one boundary formed of a resilient wall part.

Torsion-vibration damper

A torsional vibration damper comprising a hub ring (2) surrounded by a flyring (1), the two being united by at least one resilient member and being angularly displaceable relative to each other, the resilient member (3, 4) being of columnar shape and extending in the radial direction, and a clearance (6) being provided next to the resilient member in the circumferential direction between the hub ring and the flyring. The resilient member comprises a radially inner first resilient element (3) and a radially outer second resilient element (4). The ends facing each other of the first and second resilient elements (3, 4) are fastened on the inside and outside to one end (5) of a one-armed lever (7) which projects into the clearance (6) between the hub ring and flyring. The other end (8) of the lever (7) is adapted to be caused by the centrifugal force generated at a particular speed of rotation to bear undislodgeably and with deformation of the first and second resilient elements (3, 4) on the opposite facing flyring surface (9) which outwardly bounds the clearance (6) to effect an uncoupling of the spring action of the second resilient element (4) from that of the first resilient element (3).

Growing community of inventors

Hemsbach, Germany

Gunter Ullrich