Vibration-damped power transmission device

F - Mech Eng,Light,Heat,Weapons – 16 – F

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180/22, 267/54

F16F 13/00 (2006.01) B60K 5/12 (2006.01) B62M 7/00 (2010.01) F16F 1/04 (2006.01)

Patent

CA 1168271

ABSTRACT A vibration-damped power transmission device adapted to transmit power from a prime mover such as motor, inter- nal combustion engine and the like, which causes a vibratory motion, to a driven body, said power transmission device being supported on a support frame which is to be prevented from vibration, characterized in that at least two vibration dampers are disposed between the housing of said power trans- mission device and said support frame, said vibration damper comprises a mandrel, a mass member having a cylindrical inner surface enclosing said mandrel, and at least one damping coil spring inserted between said mandrel and said cylindrical inner surface, each of said springs consisting of at least one small coiled portion engaged with or fixed to said mandrel, at least one large coiled portion engaged with or fixed to said cylindrical inner surface and at least one conically and spirally coiled portions integrally connecting said small coiled portion and said large coiled portion.

393171

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