Patent ID: 6993996

Claim:
A viscosity-type torsional vibration damper, comprising: a damper housing; a rotating ring; flange sleeves for guiding the rotating ring in the damper housing, the flange sleeves being inserted loosely without prestress between the damper housing and the ring, and simultaneously maintaining defined shearing gaps between the housing and the ring, each flange sleeve being made of a plastic material, and having an L-shaped cross-section, and including a butt joint at one circumferential location; and wherein the butt joint is bridged by at least one material web, the material web penetrating the butt joint only in sections, and wherein the at least one material web deforms in an elastic-plastic manner during a thermal length increase of the sleeve, and wherein a portion of the web that is connected to the flange sleeve has a ramp-shaped construction with a thickness that decreases with the distance to the flange sleeve to increase fatigue strength.