saett foer and device to reduce the risk stoerande foer sound and saerskilt scream fraan smaa children

摘要

The risk of disturbance from children's cries is reduced if the child is subjected to mechanical vibration. This is applied to the child's place of rest by the use of a motor with imbalance. The environmental inconvenience caused by the children's cry is eliminated usually by a vibration frequency which is disturbing in itself but which is attenuated in a known way at the place of rest's contacts with the surroundings. An automatic device for starting when the child cries can be applied.