Recently I received a letter from a reader in India requesting to explain what 40 principles are about. Upon some reflection I came to a conclusion that despite there are many articles on the internet on the topic they, alas, are not clear to most people. There is definitely a need in "40 principles for dummies" type of publication. That is why I started collecting simple illuminating examples clear to everyone. Below are the excerpts from this collection.
Example on TRIZ principle #2 "Taking out": a skipping rope without a rope (US patent 7037243).
Example on TRIZ principle #3 "Local quality": detector of undetectable objects, e.g. UFO.
Example on TRIZ principle #5 "Merging/Combining": wings and jet engine strapped to a race car to break the land speed record. (Or a toothbrush with an in-built video game)
Example on TRIZ principle #6 "Universality": fire-alarm used also as a door bell.
Example on TRIZ principle #13 "Inversion": a waterproof tea bag.
An example on TRIZ principle #14 "Spheroidality": firing squad standing in a circle.
Example on TRIZ principle #16b "Excessive action": bullet-proof coffin.
Example on TRIZ principle #17 "Transition to another dimension": penile volumetric measuring device (US patent 7147609).
The invention is based on the discovery by the inventors that although the size may not matter, the volume definitely matters ! This is definitely a 5th level invention since is based on a discovery.
Example on TRIZ principle #25 "Self-Service": Battery-Powered Battery Charger.
Example on TRIZ principle #26 "Use of copies": a urinal drain cover with a picture of your enemy.
Example on TRIZ principle #27: "Cheap short living instead of expensive long living": a nutcraker of the following shape instead of a woman (US patent D494820):
Example on TRIZ principle #32 "Color change": black highlighter.
Example on TRIZ principle #36 "Phase transition": Dehydrated Water.
Example on TRIZ principle #38 "Strong oxidants": Strong oxidants filled fire extinguisher.