Patent ID: 6857334

Claim:
A motor vehicle embodying a power train which includes: a prime mover; a variable-speed transmission having a plurality of ratios; a torque transmitting unit actuatable to connect rotary output element of said prime mover with rotary input element of said transmission; means for actuating said torque transmitting unit; means for varying a speed of said transmission, including a first drive for selecting one of said ratios and a second drive for shifting the transmission into the selected ratio, one of said drives including means for transmitting rotary movements and the other of said drives including means for transmitting translatory movements; automatic control means for said actuating means and said speed varying means for transmitting signals to said control means; and kinematic transmission connecting said drives with said transmission, including means for converting rotary movements transmitted by said one drive into translatory movements and means for converting translatory movements constituting converted rotary movements into rotary movements, wherein one of said converting means includes a toothed rack comprising a first portion containing a material having a first melting point and including the teeth thereof and a second portion containing a material having a second melting point lower than said first melting point, one of said converting means including a pivotable lever arranged to transmit tension-free translatory movements and receiving motion from said second portion of said toothed rack.