torsion bar


torsion bar

noun

Definition of TORSION BAR

:  a long metal element in an automobile suspension that has one end held rigidly to the frame end and the other twisted and connected to the axle and that acts as a spring

First Known Use of TORSION BAR

1937

torsion bar

noun    (Concise Encyclopedia)

Rod or bar that resists twisting (see torque) and has a strong tendency to return to its original position when twisted. In an automobile, a torsion bar is a long spring-steel element with one end held rigidly to the frame and the other end twisted by a lever connected to the axle. It thus provides a spring action for the vehicle.

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