US 5,863,253 AGranted

Torsional vibration damping assembly

AssigneePatentverwertungsgesellschaft Rohs Voigt mbh

InventorsUlrich Rohs, Dietmar Heidingsfeld

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Abstract

A torsional vibration damping assembly, comprising a rotating driving disk and a driven disk having a jacket surface with a polygonal cross-section. The driven disk is arranged coaxially with the driving disk and rotates in the same direction as the driving disk. The driving disk has an overlapping ring-shaped portion that partly grips over the driven disk. A plurality of radial pockets having wedge-shaped ends are disposed around the circumference of the inside face of the ring-shaped portion of the rotating driving disk. A pair of wedge-shaped thrust pistons are arranged in each of the radial pockets. The pistons are slightly curved or planar on their sides facing the jacket surface of the driven disk. There is at least one pressure spring arranged in each pocket that keeps the pistons apart from one another. There is also a plurality of devices such as pressure springs for effecting a reset moment from the driving disk to the driven disk during idle run, that exerts almost no frictional force.

Claims7

Dependent claims

A torsional vibration damping assembly having a rotary axis and means for elastic force transmission, comprising:

a rotating driving disk having an inside face and an overlapping ring-shaped portion;
a driven disk having a jacket surface with a polygonal cross-section, said driven disk arranged coaxially with the driving disk and rotating in the same direction as the driving disk, wherein the overlapping ring-shaped portion of the driving disk grips over a portion of the driven disk;
a plurality of radial pockets each having two ends, said pockets being disposed around the circumference of the inside face of the ring-shaped portion of the rotating driving disk, wherein said pockets are wedge-shaped at each end and wherein each pocket has a jacket surface;
a pair of wedge-shaped thrust pistons arranged in each of said radial pockets, wherein said pistons are slightly curved or planar on their sides facing the jacket surface of the driven disk;
at least one pressure spring arranged in each radial pocket, said pressure spring keeping said pistons apart from one another.

2 more elements

Dependencies are inferred from the claim text.