High deflection amplitude torsional vibration damper

A vibration damper assembly to transmit torque between driving and driven members, comprising an input member adapted to engage torque input means, a hub operatively connected to torque output means and having a pair of diametrically opposed radial arms, a pair of floating equalizers journalled on said hub, each equalizer having a pair of diametrically opposed radial arms, resilient means interposed between said hub arms and equalizer arms, each hub arm and equalizer arm having diverging edges acting to control the axial location of the line of thrust of the resilient means and terminating in a pair of circumferentially extending fingers, and a pair of cover plates substantially completely enclosing said hub, equalizers and resilient means and operatively connected to said input member, each cover plate having drive means therein interposed in the path of said resilient means, said fingers preventing rubbing of said resilient means on said cover plates, said cover plates being identical but reversely oriented to each other, each plate including a central portion having an opening receiving said hub, an outwardly and then inwardly rounded portion and a peripheral radial flange, and a spacer ring interposed between said flanges, said flanges and spacer ring being secured together so that the cover plates are journalled on said hub, said flanges and spacer ring forming a circumferentially extending channel receiving and guiding the outer peripheries of said hub arms and equalizer arms.

A vibration damper assembly to transmit torque between driving and driven members, comprising an input member adapted to engage torque input means, a hub operatively connected to torque output means and including a barrel and a radial flange located intermediate the ends of said barrel and defining a pair of shoulders on the opposite sides thereof, a pair of diametrically opposed integral radial arms extending outwardly from said flange, a pair of floating equalizers journalled on said shoulders on the opposite sides of said flange, each equalizer comprising an annular body having a central opening receiving a hub shoulder and a pair of diametrically opposed radial arms, each arm having an offset portion so that the outer ends of said arms of the equalizers lie in a common plane with the hub arms, said hub arms and equalizer arms each terminating in circumferentially extending fingers, a spring set comprising concentric springs located between each hub arm and equalizer arm, each hub arm and equalizer arm having outwardly diverging edges which act to control the line of thrust of the spring sets, a pair of cover plates substantially enclosing said hub, equalizers and spring sets and operatively connected to said input member, each cover plate including a central portion having an opening receiving a shoulder, an outwardly and then inwardly rounded housing portion and a peripheral flange, the cover plate being reversely oriented to each other to form a housing, a spacer ring located between the flanges of the cover plates, said flanges and spacer ring being secured together and forming a guide channel receiving the outer edges of the hub arms and equalizer arms, one or more friction washers positioned on each shoulder between the cover plate and adjacent equalizer, and a pair of drive tabs integral with each cover plate and stamped inwardly of the rounded portions thereof to lie adjacent the hub arms and in the path of said spring sets.