Profile: All Power Transmission Inc. is a manufacturer of universal joints for industrial, off highway and transportation applications. Our brand is APTD Driveshaft Products™. Our universal joint drive shaft is used to transmit power from the power source to the driven machine, and the telescopic feature eliminates the need for movement of machinery for installation or maintenance removal. It also allows motion during operation or no-load conditions. Our Spicer Drive Shaft® is designed for long life at moderate torque levels, though they are capable of withstanding high momentary torques such as those encountered in starting a load or a vehicle moving. Our torsionally dampened driveshafts are designed to reduce the torsional stress between the drive source and the driven unit. It reduces the frequencies below the operating speed, and torque spikes caused by resonance can be brought to within permissible levels.