Spring devices – Resilient shock or vibration absorber – Including energy absorbing means or feature
Reexamination Certificate
2003-11-07
2008-03-11
Burch, Melody M. (Department: 3683)
Spring devices
Resilient shock or vibration absorber
Including energy absorbing means or feature
C248S638000
Reexamination Certificate
active
07341243
ABSTRACT:
In a hydraulic style vibration-proof device, a lower attachment fitting (34) forming an air chamber (36) between a diaphragm (16) and itself is fabricated of aluminum and is provided at its bottom wall portion with a through-hole (50), and a bolt (52) having a serration portion (54) below its head is press fitted in and secured to the through-hole, thereby fixedly providing the bolt (52) without involving a large projection into the air chamber (36) and at a low cost Further, the bottom wall portion (34B) is formed to be thicker than a peripheral wall portion (34C) of the lower attachment fitting and both are interconnected by a curved portion (34D), thereby achieving an increase in strength.
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Ihara Yoshio
Yamamoto Hikofumi
Burch Melody M.
Toyo Tire & Rubber Co., Ltd.
Westerman, Hattori, Daniels & Adrain, LLP.
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