28 Mechanics substitution
Replace a mechanical means with a sensory (optical, acoustic, taste or smell) means.
• Replace a physical fence to confine a dog or cat with an acoustic *fence* (signal audible to the animal).
• Use a bad smelling compound in natural gas to alert users to leakage, instead of a mechanical or electrical sensor.
Use electric, magnetic and electromagnetic fields to interact with the object.
• To mix 2 powders, electrostatically charge one positive and the other negative. Either use fields to direct them, or mix them mechanically and let their acquired fields cause the grains of powder to pair up.
Change from static to movable fields, from unstructured fields to those having structure.
• Early communications used omnidirectional broadcasting. We now use antennas with very detailed structure of the pattern of radiation.
Use fields in conjunction with field-activated (e.g. ferromagnetic) particles.
• Heat a substance containing ferromagnetic material by using varying magnetic field. When the temperature exceeds the Curie point, the material becomes paramagnetic, and no longer absorbs heat.
• Replace a physical fence to confine a dog or cat with an acoustic *fence* (signal audible to the animal).
• Use a bad smelling compound in natural gas to alert users to leakage, instead of a mechanical or electrical sensor.
Use electric, magnetic and electromagnetic fields to interact with the object.
• To mix 2 powders, electrostatically charge one positive and the other negative. Either use fields to direct them, or mix them mechanically and let their acquired fields cause the grains of powder to pair up.
Change from static to movable fields, from unstructured fields to those having structure.
• Early communications used omnidirectional broadcasting. We now use antennas with very detailed structure of the pattern of radiation.
Use fields in conjunction with field-activated (e.g. ferromagnetic) particles.
• Heat a substance containing ferromagnetic material by using varying magnetic field. When the temperature exceeds the Curie point, the material becomes paramagnetic, and no longer absorbs heat.
Is this principle frequently used?
This principle is often used with 229 instances in the matrix.This principle is proposed to solve the following contradictions:
Click on a contradiction to explore it
1/7 1/14 1/25 1/28 1/29 1/32 1/34 1/37 2/14 2/17 2/20 2/22 2/27 2/28 2/32 2/34 2/37 2/39 3/28 3/29 3/34 3/39 4/2 4/10 4/14 4/22 4/23 4/27 4/28 5/11 5/28 5/30 5/38 6/28 7/13 7/28 7/29 8/13 9/1 9/10 9/13 9/17 9/23 9/27 9/28 9/29 9/30 9/33 9/34 9/36 10/2 10/4 10/9 10/29 10/33 10/39 11/5 11/28 12/28 12/32 12/36 13/3 13/7 13/8 13/9 14/4 14/6 14/21 14/23 14/25 14/36 15/12 15/19 15/23 15/25 15/30 16/25 17/9 17/25 17/39 18/32 18/33 19/1 19/3 19/15 19/32 19/34 19/36 19/39 20/23 21/14 21/23 21/38 21/39 22/1 22/39 23/4 23/9 23/14 23/15 23/20 23/21 23/28 23/33 23/36 23/39 24/25 24/26 24/27 25/14 25/15 25/16 25/24 25/28 25/29 25/32 25/33 25/35 25/37 25/38 26/9 26/24 26/27 26/28 27/2 27/4 27/9 27/10 27/14 27/24 27/26 27/37 28/1 28/2 28/3 28/4 28/5 28/6 28/9 28/11 28/12 28/14 28/15 28/17 28/23 28/25 28/30 28/37 28/38 28/39 29/1 29/2 29/3 29/5 29/9 29/10 29/25 29/30 29/38 30/5 30/9 30/15 30/28 30/29 30/33 31/9 31/10 32/1 32/12 32/18 32/19 32/25 32/37 32/38 32/39 33/10 33/12 33/14 33/23 33/25 33/30 33/39 34/3 34/15 34/19 34/26 35/25 35/36 35/39 36/9 36/12 36/14 36/15 36/19 36/23 36/35 36/37 36/39 37/1 37/2 37/10 37/14 37/25 37/27 37/28 37/30 37/32 37/36 38/1 38/2 38/3 38/9 38/21 38/22 38/25 38/28 38/29 39/2 39/3 39/10 39/14 39/17 39/22 39/23 39/28 39/32 39/33 39/35 39/36
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.