Power transmission device

Details Power transmission device Power transmission device

2009-06-16

2011-11-08

Mansen, Michael (Department: 3654)

Endless belt power transmission systems or components

Friction drive pulley or guide roll

Pulley or guide roll including circumferential...

Reexamination Certificate

active

08052560

ABSTRACT:
A power transmission device includes a pulley1and a hub2having an inner hub21, a rubber damper22and an outer hub23. A hub side engagement portion24formed of an elastic material and arranged at either one, or both, of an inner peripheral surface and an outer peripheral surface of the outer hub engages with a pulley side engagement portion12, which is arranged at a position corresponding to the outer hub, of the pulley in a concavo-convex fitting to thereby constitute a torque transmission structure between the hub and the pulley. The hub side engagement portion and the pulley side engagement portion have a concavo-convex outer shape and mesh with each other. A ring-like dust invasion prevention portion28covers a front surface of said concavo-convex fitting.

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