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40 Inventive Principles
Cushion in Advance (Preventative Measure)

Compensate for the poor reliability of an object by taking countermeasures in advance.
 

EXAMPLE:
  1. At speeds of over 65mph, the risk of serious car accidents due to a tyre blow out is greatly increased. Fixing a steel disk behind each rim, which, in the case of a blow out, keeps the car in a level position, greatly reduces the risk of a serious accident.
  2. Sleeping pills are covered with a thin film of an emetic substance. If more than the indicated number of pills is swallowed at one time, the concentration of the emetic substance reaches a threshold value in the stomach, which provokes vomiting.
  3. To prevent frozen water from breaking its container, the inside of the container is lined with an expanded-cellular material, which, when the water freezes, is compressed by the ice.
  4. As a preventive measure against bank robbery, a small transmitter can hidden be in one of the bundles of notes, making it easier to locate the bank robber and the stolen money. Details