Increased axial rate and improved durability of an elastomeric bushing
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United States of America Patent
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Issued Date -
Jul 10, 2008
app pub date -
Jan 10, 2007
filing date -
Jan 10, 2007
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Abandoned
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Abstract
An elastomer bushing having an increased axial rate, improved durability, and high fatigue life due to the compression and confinement of the rubber element is provided. The manufacture of the elastomer journal is conventional for commercial vehicle applications. In a primary embodiment, the rubber is bonded to a bar pin by an adhesive, wherein the rubber journal is then subsequently assembled into an outer tube. After assembly, the outer tube is curled to retain the rubber journal, and the center of the outer tube diameter is swaged or compressed so as to deform the outer tube into the rubber. The compressed groove in the outer tube comprises the unique feature of this bushing design. This groove provides a mechanical 'footing' that resists movement when an axial load is applied.
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