Spring devices – Resilient shock or vibration absorber – Nonmetallic – resilient element
Reexamination Certificate
2005-12-28
2009-12-22
Burch, Melody M (Department: 3657)
Spring devices
Resilient shock or vibration absorber
Nonmetallic, resilient element
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.
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Hayashi Takashi
Kuwayama Naohito
Burch Melody M
Oliff & Beridge PLC
Tokai Rubber Industries Ltd.
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