3 Local quality

Change an object's structure from uniform to non-uniform, change an external environment (or external influence) from uniform to non-uniform.
  • Use a temperature, density, or pressure gradient instead of constant temperature, density or pressure.

Make each part of an object function in conditions most suitable for its operation.
  • Lunch box with special compartments for hot and cold solid foods and for liquids.

Make each part of an object fulfill a different and useful function.
  • Pencil with eraser
  • Hammer with nail puller
  • Multi-function tool that scales fish, acts as a pliers, a wire stripper, a flat-blade screwdriver, a Phillips screwdriver, manicure set, etc.
TRIZ principe 3


The colour indicates the ranking of the proposed principle to solve the contradiction: 1st, 2nd, 3rd, 4th.
This ranking reflects the frequency of occurrence of the principle in the analysed patents for this type of contradiction.
When a principle appears in first position, it means that it is statistically the most used in the patents studied for this type of problem.

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