Patent ID: 7052002
Filing Date: 2006-05-30
Classification: B60G,F16F

Abstract:
1. A vibration damping device comprising: an inner cylinder member having a first outer flange that extends diametrically outward at one axial end thereof; an outer cylinder member having a second outer flange that extends diametrically outward at one axial end thereof, the outer cylinder member being coaxially disposed about the inner cylinder member with the one axial end of the inner cylinder member projecting out from the one axial end of the outer cylinder member and the first and second outer flanges situated spaced apart in opposition to one another in the axial direction; and a rubber elastic body interposed between and elastically connecting the inner cylinder member and the outer cylinder member, while having an end section sandwiched between the first and second outer flanges, wherein the rubber elastic body is provided with hollow portions recessed diametrically inward from an outside periphery of the first outer flange at three or four locations in an circumferential direction of the end section of the rubber elastic body; wherein the hollow portions are disposed at equidistant intervals in the circumferential direction, and wherein each hollow portion has an arcuate concave shape overall in transverse cross section wherein an inwardly curved bottom surface located in a most radially inner position thereof extends toward both circumferential ends thereof while gradually extending radially outwardly.