Here are examples of the quality of “idealness:”
Example 1. "Automobile seat belts must be changed periodically. The concern has been expressed that the material may weaken. Belts have been invented that show by their appearance when they need changing."
Example 2. "A layer of colored paint is applied to the tread of a protector and the number of kilometers traveled by the automobile before attrition of the applied layer is recorded. This method for evaluating the wearability of the tire is simple and useful during testing of the longevity of new types and constructions. This method can be used during the inspection of tires for their replacement.
Example 3. Window glass needs cleaning. To undertake this operation on high, large shop windows is somewhat labor-intensive. If the shops are "glazed" with lavsan film, then during a gust of light wind the film itself clears dust from the window. This film is transparent, light, and unharmed by hydroflouric acid fumes. For the "glazing" of windows with this type of film lightened frames can be used.
Example 4. The contact between surfaces made of steel leads to their wear, therefore points of contact are lubricated.Polish specialists claim that any steel becomes self-lubricating (IFR), without loosing its best mechanical qualities when 0,3% lead is added to it. It is possible to increase cutting speed and extend the useful life of instruments.
Example 5. In order for the nut in bolt connections not to work itself free during use, a second (counter) nut should be screwed onto the bolt.The ideal in the given situation would be a "nut that fastens (locks) itself." Now more than a few different varieties of self-locking nuts already exist
Example 6. Cloths wash itself without use of any machine.
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