Ackermann
/ˈakəmən/(also Ackerman)
noun
Attributive Designating a steering mechanism designed so that, when a vehicle turns, both the outer and the inner wheels remain perpendicular to the radius of the turn, even though the outer wheels trace a larger circle than the inner wheels; relating to or employing this mechanism.
Origin
Late 19th century. From the name of Rudolph Ackermann, German-born London coachbuilder and publisher, who patented the mechanism in Britain in 1817 on behalf of its German inventor Georg Lankensperger.