Driveshaft tube having sound deadening coating

Details Driveshaft tube having sound deadening coating Driveshaft tube having sound deadening coating

1995-07-20

1996-10-22

Scherbel, David

Pipes and tubular conduits

Distinct layers

Coated

138143, 181207, F16L 914

Patent

active

055667210

ABSTRACT:
The invention relates to a driveshaft tube having improved sound deadening properties. This benefit is achieved by coating the inner cylindrical surface of the driveshaft tube with a sound deadening material. Preferably the coating material has a density of at least about 0.8 g/cc. A preferred coating material is a urethane elastomer. A coating between 0.010 inch (0.025 cm) and 0.125 inch (0.308 cm) thick is preferred. In the method for forming the driveshaft tube, preferably the coating material is applied as a liquid and allowed to harden. A preferred application method involves spray coating the inner cylindrical surface of the driveshaft tube. The end portions of the driveshaft tube are left uncoated to avoid the end yoke welds.

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