Torsion vibration damper and process for its manufacture

A torsion vibration damper comprising:

• a primary plate having a first rim with an external surface and an internal surface;
• at least one additional rim disposed adjacent to said primary plate;
• a cylindrical shoulder area disposed on said primary plate facing said additional rim;
• and
• a secondary plate disposed adjacent to said primary plate and coupled to said secondary plate so that said primary plate transfers torque to said secondary plate.

A torsion vibration damper comprising:

• a primary plate having a rim with an external surface and an internal surface wherein said primary plate has an angled area disposed essentially parallel to the axis of rotation of the torsion vibration damper and wherein said primary plate is formed from a pressing action;
• an additional rim which coupled to said primary plate in said angled area of said primary plate;
• and
• a secondary plate disposed adjacent to said primary plate wherein said primary plate transfers torque to said secondary plate.

A torsion vibration damper comprising:

• a primary plate having a rim with an external surface and an internal surface wherein said primary plate has an angled area disposed essentially parallel to the axis of rotation of the torsion vibration damper;
• an additional rim connected to said primary plate in said angled area wherein said additional rim has drill holes or milling cut outs for balancing said primary plate;
• and
• a secondary plate disposed adjacent to said primary plate and coupled to said primary plate so that said primary plate transfers torque to said secondary plate.

A torsion vibration damper comprising:

• a primary plate;
• a secondary plate coupled to said primary plate;
• a generating element plate located on said primary plate;
• and
• an additional rim disposed on said primary plate, wherein said generating element plate is secured to both said primary plate and to said additional rim on said primary plate.

A torsion vibration damper comprising:

• a primary plate having a series of spring chambers;
• a series of springs disposed in said spring chambers;
• a secondary plate disposed adjacent to said primary plate and coupled to said primary plate;
• and
• a sliding bearing disposed radially inwards of said series of springs between said primary and secondary plates having a sliding surface of polyamide, such as PA 4.6.

A torsion vibration damper comprising:

• a primary plate having a series of spring chambers;
• a series of springs disposed within said spring chambers;
• a secondary plate disposed adjacent to said primary plate and coupled to said primary plate;
• and
• a sliding bearing disposed radially inwards of said series of springs between said primary and said secondary plate, having at least partially interrupted bearing sleeves in said secondary plate's circumference.

A torsion vibration damper comprising:

• a primary plate having a series of spring chambers;
• a series of springs disposed within said spring chambers;
• a secondary plate disposed adjacent to said primary plate and coupled to said primary plate;
• and
• a sliding bearing disposed radially inwards of said series of springs between said primary and said secondary plates with said sliding bearing having bearing sleeves having longitudinal slots disposed along its circumference.

A torsion vibration damper comprising:

• a primary plate having a first series of spring chambers;
• a secondary plate disposed adjacent to said primary plate and coupled to said primary plate;
• an intermediate module disposed between and in contact with said primary plate and said secondary plate said intermediate module having a second series of spring chambers;
• and
• a thrust piston spring arrangement comprising at least a first thrust piston spring device disposed in said first series of spring chambers and at least a second thrust piston spring device, disposed in said second series of spring chambers wherein said first thrust piston spring device has different spring damping characteristics than said second thrust piston spring device, said thrust piston spring arrangement for causing the interaction between said primary plate and said secondary plate at all angles except for at an equilibrium angle.