Friction disk shock absorber

André Hartford shock absorber

Friction disk shock absorbers or André Hartford dampers were an early form of shock absorber or damper used for car suspension. They were commonly used in the 1930s but were considered obsolete post-war.[1]

Compared to modern shock absorbers friction dampers only provided limited shock absorption but served mainly to damp down oscillation.

  1. ^ Setright, L. J. K. (1976). "Suspension". In Ian Ward (ed.). Anatomy of the Motor Car. Orbis. p. 166. ISBN 0-85613-230-6.