Cylindrical dynamic damper

Spring devices – Resilient shock or vibration absorber – Nonmetallic – resilient element

Reexamination Certificate

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Details

C267S141200

Reexamination Certificate

active

07635118

ABSTRACT:
A cylindrical dynamic damper including: a cylindrical mass member disposed about a rotating shaft and coaxially therewith; and a pair of elastic support members having a pair of ring-shaped affixing members situated at axial ends of the mass member and mounted on an outside peripheral face of the rotating shaft and a pair of elastic support portions of cylindrical shape connecting respectively to the affixing members and to the axial ends of the mass member to thereby elastically support the mass member. The mass member has on inside peripheral corners of both axial ends slanted faces disposed in chamfered profile and varying in shape in the circumferential direction; and the elastic support portions connected at one ends to the slanted faces have free length varying in the circumferential direction.

REFERENCES:
patent: 6450487 (2002-09-01), Kuwayama
patent: 6550754 (2003-04-01), Kuwayama
patent: 6817599 (2004-11-01), Kato et al.
patent: 6857623 (2005-02-01), Kuwayama
patent: 6981579 (2006-01-01), Kuwayama et al.
patent: 2003/0006541 (2003-01-01), Kuwayama
patent: 2004/0041318 (2004-03-01), Kuwayama et al.
patent: 1 191 252 (2002-03-01), None
patent: A 9-89047 (1997-03-01), None
patent: A 2002-98193 (2002-04-01), None
patent: A 2004-92674 (2004-03-01), None

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