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US 8,801,526 B1Granted
Foamed drive shaft damper
AssigneeCaraustar Industrial and Consumer Products Group, Inc.
InventorsGary A. Conger, Peter T. Tkacik, Martin H. Stark, David A. Galonska, Josh Wolfenbarger
Life of this patent
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Abstract
A foamed drive shaft damper may be inserted into a hollow automotive drive shaft. The damper includes foam deposited on its outer surface. The foam itself, which extends above the damper's outer surface, possesses a maximum operating temperature of 175° C. or higher.
Claims15
An NVH-reducing drive shaft damper, comprising:
- a substantially cylindrical paperboard structure defining an inner surface and an outer surface;
- and
- foam applied to the outer surface of said substantially cylindrical paperboard structure;
- wherein said foam has (i) a density of between about 1.0 lb/ft3 and 3.0 lbs/ft3, (ii) an indent-force deflection at 25 percent of between about 28 psi and 36 psi, (iii) a tensile strength of at least about 10 psi, (iv) a tear strength of at least about 1.0 psi, and (v) a minimum elongation of at least about 100 percent;
- and
- wherein said foam extends above the outer surface of said substantially cylindrical paperboard structure, and wherein said foam substantially covers the entire outer surface of said substantially cylindrical paperboard structure and has an uncompressed thickness of between about 0.25 inch and 2.0 inches.
3 more elements
Dependencies are inferred from the claim text.