초록 ▼

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 coati

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.

대표청구항 ▼

A driveshaft tube for a vehicle drive train comprising: a single hollow cylindrical tube including a pair of ends, said tube defining an inner cylindrical surface; an end fitting secured to each end of said tube and adapted to provide a rotational driving connection between a source of rotational po

A driveshaft tube for a vehicle drive train comprising: a single hollow cylindrical tube including a pair of ends, said tube defining an inner cylindrical surface; an end fitting secured to each end of said tube and adapted to provide a rotational driving connection between a source of rotational power and a load; and a coating of a sound deadening material adhered to said inner cylindrical surface of said tube for absorbing acoustical noise within said tube to reduce the magnitude of such acoustical noise transmitted through said tube.