Fluid-filled resilient bushing having damping means within fluid chambers

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United States of America Patent

PATENT NO 4749174
SERIAL NO

07066135

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Abstract

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A fluid-filled resilient bushing including an annular resilient member interposed between inner and outer sleeves, and a stopper block having a pair of stopper portions disposed in respective fluid chambers defined by the outer sleeve and the resilient member. The chambers are located opposite to each other in a first direction in which the bushing receives vibrations. The two chambers, filled with an incompressible fluid, communicate with each other through an orifice. The stopper portions extend from the inner sleeve toward the outer sleeve. Each stopper portion has a radial end face having an edge which is spaced apart from a periphery of the corresponding fluid chamber in a second direction perpendicular to the first direction, so as to define an annular spacing. A damping member is provided on the radial end face of at least one of the stopper portions. The damping member projects from the edge of the end face substantially in the second direction, such that the damping member cooperates with the periphery of the corresponding fluid chamber to define an annular gap smaller than the annular spacing.

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Patent Owner(s)

Patent OwnerAddress
TOKAI RUBBER INDUSTRIES LTD 3600 AZA-UTAZU OAZA-KITATOYAMA KOMAKI-SHINot Provided

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kanda, Ryouji Inuyama, JP 27 434

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