Dual-type damper device

Details Dual-type damper device Dual-type damper device

1986-10-10

1989-01-03

Smith, Gary L.

Machine element or mechanism

Elements

Flywheel, motion smoothing-type

474166, F16F 1510

Patent

active

047948167

ABSTRACT:
A dual-type damper for damping vibration of a rotation axle, having a damper pulley including a boss portion joined to the rotation axle, a cylindrical portion located radially outwardly of the boss portion, and a connection portion connecting the boss and cylindrical portions; a first damper mass disposed radially outwardly of the cylindrical portion, concentrically with the same; a first resililent member interposed between the cylindrical portion and the first damper mass; and a metallic annular member press-fitted onto an inside surface of the cylindrical portion. A second damper mass having a cylindrical shape is disposed between the connection portion and the annular member, in an inner space of the cylindrical portion, concentrically with the cylindrical portion; is (f) a second resilient member disposed between the annular member and one axial end of the second damper mass, so as to secure the second damper mass to the annular member. A dual-type damper of another embodiment has a damper pulley including a cylindrical portion; a first damper mass; a first resilient member; a second damper mass having a cylindrical shape and disposed in an inner space of the cylindrical portion; a second resilient member supporting the second damper mass at one axial end of the same; and a third resilient member mounted on an outside surface of the second damper mass, or on an inside surface of the cylindrical portion.

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patent: 4254847 (1981-03-01), Kamman et al.
patent: 4378865 (1983-04-01), Mclean
patent: 4710152 (1987-12-01), Ichikawa et al.

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