Title:
POWER TRANSMISSION DEVICE
Document Type and Number:
Japanese Patent JP2005337380
Kind Code:
A
Abstract:
To avoid increase of dimension of a pulley unit (power transmission device) when improving rotation fluctuation absorbing performance of, for example, a pulley (outside annular body) and a rotor shaft (inside annular body) due to a torsion spring coil arranged between both the annular bodies.
This power transmission device is structured by respectively connecting both ends of the torsion spring coil 4 wound around the rotor shaft (inside annular body) 3 to the pulley 2 and the rotor shaft 3 and integrally coating the torsion coil spring 4 with a vibration damping material 15.
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Inventors:
WATANABE HAJIME
YAMATANI TOMOYA
FUJIWARA HIDEKI
YAMATANI TOMOYA
FUJIWARA HIDEKI
Application Number:
JP2004157144A
Publication Date:
December 08, 2005
Filing Date:
May 27, 2004
Export Citation:
Assignee:
KOYO SEIKO CO
International Classes:
F16H55/36; F16F15/12; F16F15/126; (IPC1-7): F16H55/36; F16F15/12; F16F15/126
Attorney, Agent or Firm:
Kazuhide Okada