Triz Principle 7 # Nesting

Nested structures are quite easy to recognize, but the principle of nesting can be hard to recall when we need to solve problems using it. So, it’s good to remember few examples to keep your self inspired.

A. 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)

B. 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).

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