Back قضيب موازنة Arabic Barra estabilitzadora Catalan Stabilizátor (odpružení) Czech Stabilisator (Automobil) German Barra estabilizadora Spanish Stabilisaatorvarb ET Kallistuksenvakaaja Finnish Barre antiroulis French Barra antirollio Italian スタビライザー (自動車部品) Japanese
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An anti-roll bar (roll bar, anti-sway bar, sway bar, stabilizer bar) is an automobile suspension part that helps reduce the body roll of a vehicle during fast cornering or over road irregularities. It links opposite front or rear wheels to a torsion spring using short lever arms for anchors. This increases the suspension's roll stiffness—its resistance to roll in turns.
The first stabilizer bar patent was awarded to Canadian inventor Stephen Coleman of Fredericton, New Brunswick on April 22, 1919.[1][2]
Anti-roll bars were unusual on pre-WW2 cars due to the generally much stiffer suspension and acceptance of body roll. From the 1950s on, however, production cars were more commonly fitted with anti-roll bars, especially those vehicles with softer coil spring suspension.
- ^ Theriault, Mario (2001). Great Maritime Inventions, 1833-1950. Goose Lane Editions. p. 69. ISBN 978-0-86492-324-0.
- ^ Coleman, Stephen L. Chancey (1919-04-22). "Patent Summary: CA 189894 Spring suspension". Canadian Intellectual Property Office. Archived from the original on 2017-10-23. Retrieved 2014-08-21.