Two-stage torsional vibration damper
AssigneeBorg-Warner Corporation
InventorPaul E. Lamarche
Life of this patent
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Abstract
A torsional vibration damper assembly to provide extended travel for the dampening effect which is achieved by the use of two concentric series of damper springs interconnected through a common housing or intermediate member. A driving plate has two or more drive tangs secured thereon, which tangs extend inwardly into the path of the outer circle of damping springs. One or more floating divider rings are journalled in the assembly and have ears projecting into the path of the springs as do outer drive straps of the intermediate member. Floating wedges or skates are located between the springs of the inner circle along with inner drive straps of the intermediate member and hub arms in the path of the inner springs; the hub being driven through the circles of springs to drive a transmission input shaft.
Claims20
A two-stage torsional vibration damper assembly for the transmission of torque between driving and driven elements, comprising a piston plate operatively associated with torque input means, at least two drive tangs secured to said piston plate, a hub operatively connected to an output shaft, at least two outer floating means adapted to move in an arcuate path about the hub, at least two inner floating means adapted to move in a second arcuate path about the hub concentric to the first arcuate path, a plurality of outer damper springs movable in said first arcuate path, a plurality of inner damper springs movable in said second arcuate path, said drive tangs having projections extending inward into said first arcuate path, and an intermediate rotatable member having at least two drive members extending into said first arcuate path and at least two drive straps extending into said second arcuate path, said hub having at least two arms extending into said second arcuate path, said outer damper springs being interposed between said outer floating means and said drive members, and said inner damper springs being interposed between said drive straps and said second floating means.
Dependencies are inferred from the claim text.