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


Is this principle frequently used?

This principle is moderately used with 127 instances in the matrix.

This principle is proposed to solve the following contradictions:

Click on a contradiction to explore it

1/23 1/26 1/27 1/33 1/39 2/27 4/17 4/18 4/28 4/34 5/14 5/15 5/28 6/28 8/26 9/14 9/15 9/37 10/27 10/31 10/33 10/39 11/14 11/15 11/23 11/29 12/2 12/23 13/16 13/18 13/39 14/5 14/10 14/11 14/15 14/25 14/27 14/28 14/29 14/32 14/34 14/35 14/37 15/5 15/9 15/11 15/13 15/14 15/23 15/26 15/28 15/29 16/13 16/26 17/5 17/10 17/19 17/26 17/27 17/37 18/13 18/29 19/17 19/28 20/26 22/21 22/37 23/8 23/11 23/12 23/15 23/26 25/13 25/14 26/10 26/11 26/15 26/16 26/17 26/20 26/23 26/27 26/31 26/35 26/36 26/37 26/39 27/1 27/2 27/7 27/10 27/15 27/17 27/26 27/28 28/4 28/5 28/6 28/19 28/21 28/31 29/11 29/14 29/15 29/18 30/12 30/38 31/9 31/26 31/28 32/14 33/14 33/15 33/38 34/4 35/14 35/17 35/26 36/26 37/9 37/14 37/17 37/22 37/26 38/33 39/2 39/13


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.