Patent ID: 8556241

Claim:
A device for damping oscillations in an engine valve spring, the device comprising: a one piece damper having a top and a bottom, the bottom having a hole with an approximately center axis, the damper having a concentric inner surface and a concentric outer surface, the inner surface having a taper at the top, the taper from the inner surface meeting the outer surface, a spring land at the bottom extending approximately perpendicular from the inner surface and terminating at the hole; four vertical slots approximately parallel to the axis, each slot open at the top and terminating at the same pre-determined distance from the bottom in a semi-circle, each slot spaced approximately ninety degrees from one another around the axis; the outer surface having two grooves located between the top and the bottom, the grooves each retaining a band, the grooves matching the dimension of the bands such that a portion of the band is retained within the groove and beneath the outer surface, the bands providing tension to the damper such that the inner surface of the damper contacts the spring and dampens the spring oscillations.