25 Self-service
Make an object serve itself by performing auxiliary helpful functions
• A soda fountain pump that runs on the pressure of the carbon dioxide that is used to *fizz* the drinks. This assures that drinks will not be flat, and eliminates the need for sensors.
• Halogen lamps regenerate the filament during use--evaporated material is redeposited.
• To weld steel to aluminum, create an interface from alternating thin strips of the 2 materials. Cold weld the surface into a single unit with steel on one face and copper on the other, then use normal welding techniques to attach the steel object to the interface, and the interface to the aluminum. (This concept also has elements of Principle 24, Intermediary, and Principle 4, Asymmetry.)
Use waste resources, energy, or substances.
• Use heat from a process to generate electricity: *Co-generation*.
• Use animal waste as fertilizer.
• Use food and lawn waste to create compost.
• A soda fountain pump that runs on the pressure of the carbon dioxide that is used to *fizz* the drinks. This assures that drinks will not be flat, and eliminates the need for sensors.
• Halogen lamps regenerate the filament during use--evaporated material is redeposited.
• To weld steel to aluminum, create an interface from alternating thin strips of the 2 materials. Cold weld the surface into a single unit with steel on one face and copper on the other, then use normal welding techniques to attach the steel object to the interface, and the interface to the aluminum. (This concept also has elements of Principle 24, Intermediary, and Principle 4, Asymmetry.)
Use waste resources, energy, or substances.
• Use heat from a process to generate electricity: *Co-generation*.
• Use animal waste as fertilizer.
• Use food and lawn waste to create compost.
Is this principle frequently used?
This principle is rarely used with 49 instances in the matrix.This principle is proposed to solve the following contradictions:
Click on a contradiction to explore it
2/37 4/18 4/33 7/28 7/29 8/29 9/29 10/33 11/22 11/28 12/15 14/33 14/36 15/12 16/37 17/21 18/39 19/5 19/11 20/37 21/8 21/17 22/26 26/22 26/33 26/34 27/15 28/2 28/32 29/8 29/34 30/33 33/1 33/2 33/15 33/16 33/28 33/30 34/3 34/6 34/7 34/25 34/26 34/29 37/15 37/16 38/14 38/37 39/34
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.