7 Nested doll
Place one object inside another; place each object, in turn, inside the other.
• Measuring cups or spoons
• Russian dolls
• Portable audio system (microphone fits inside transmitter, which fits inside amplifier case)
Make one part pass through a cavity in the other.
• Extending radio antenna
• Extending pointer
• Zoom lens
• Seat belt retraction mechanism
• Retractable aircraft landing gear stow inside the fuselage (also demonstrates Principle 15, Dynamism).
• Measuring cups or spoons
• Russian dolls
• Portable audio system (microphone fits inside transmitter, which fits inside amplifier case)
Make one part pass through a cavity in the other.
• Extending radio antenna
• Extending pointer
• Zoom lens
• Seat belt retraction mechanism
• Retractable aircraft landing gear stow inside the fuselage (also demonstrates Principle 15, Dynamism).
Is this principle frequently used?
This principle is rarely used with 36 instances in the matrix.This principle is proposed to solve the following contradictions:
Click on a contradiction to explore it
3/7 3/22 4/6 4/12 4/39 5/7 6/4 6/22 6/39 7/3 7/5 7/14 7/22 7/26 8/12 9/7 12/4 12/8 14/7 22/3 22/4 22/6 22/7 22/8 22/17 22/25 22/26 22/36 26/22 34/35 34/38 35/5 35/34 39/4 39/6 39/33
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.