摘要:
The drive unit (19) according to the invention for light vehicles, in particular bicycles, comprises a wheel unit (20) and a motor unit (21). The wheel unit (20) includes a gear ring (27) and at least one, preferably two support tracks (31, 35) on which the motor unit (21), which is movably supported but circumferentially fixed to the frame (11), runs. In this way, a wheel-support arrangement for the motor unit (21) is provided. As a result, also with extreme light-weight designs as used in connection with bicycles even in sport applications, a correct engagement between the wheel mounted gear ring (27) and drive pinion (45) is achieved.
摘要:
The composition for permanent shaping of hair contains, as keratin-reducing agent, a compound of the formula (I): ##STR1## or a salt thereof, wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represent, independently of each other, H, a straight or branched chain alkyl or hydroxy alkyl group, with 1 to 3 carbon atoms or a carboxyl group, with the proviso that at least one of the R.sub.1, R.sub.2, R.sub.3 and R.sub.4 groups is not H, n and m are whole numbers from 1 to 3 and X is a bivalent group --O--, --CR.sub.5 R.sub.6 -- or --NR.sub.7 --, in which R.sub.5, R.sub.6 and R.sub.7 are each, independently of each other, H or straight chain or branched chain alkyl groups or hydroxyalkyl groups with 1 to 3 carbon atoms or carboxyl groups. New mercaptoacetamide compounds and methods of making them are also described. The composition for permanent shaping provides a safe and uniform shaping of hair without allergic and sensitizing reactions; it has a skin and hair safe pH range of 6.5 to 9.5.