A transmission system used in motor vehicles that depends upon friction between moving parts in contact to transmit motion.
- ‘Noise and the constant need for lubrication are just a few of those problems that our new friction drives have eliminated.’
- ‘The result is dramatically improved pointing and tracking capability which is far superior to a conventional worm drive and the equal of a more expensive friction drive.’
- ‘As their names imply, friction drives transmit power through the friction that exists between the belt and the pulley while positive drives rely on the engagement of the belt's teeth with grooves on the pulley.’
- ‘There also are known friction drives with constant speed ratio.’
- ‘Using friction drives in the past required spinning the scope or using a level and making a best estimate of the final drive ratios to enter into the software.’