DUST COVER FOR BALL JOINT
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United States of America Patent
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app pub date -
Apr 20, 2015
filing date -
Jun 6, 2014
priority date (Note) -
Abandoned
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Abstract
A dust cover for a ball joint has a spherical head portion, a shaft, a one end large-diameter opening portion, and the other end small-diameter opening portion. An annular groove portion is formed between an inner peripheral surface of a reinforcing ring in the other end small-diameter portion and an outer peripheral side of a seal lip, a metal spring ring is arranged within the annular groove portion and is constructed by a cylinder portion which is fixed and retained to an inner peripheral surface of the reinforcing ring, and a spring portion exists in an inner peripheral surface side of the cylinder portion in such a manner as to be folded back from one end in an axial direction of the cylinder portion and forms slits pressing the seal lip to an outer peripheral surface side of the shaft and uniformly arranged circumferentially.
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