Machinery & Equipment
Variable ratio chain drives (derailleurs) are extremely efficient, but suffer from several problems:
1. They should not be shifted under load.
2. They should not be shifted while stopped.
3. The chain is side loaded for most gear combinations, limiting the useful combinations.
Diesel engines were invented more than one hundred years ago. Continuous refinements have made diesels cleaner, quieter and more powerful. Nevertheless, the basic principles of operation and overall design remain unchanged. For this reason, diesel engines retain several shortcomings they have always had.
The invention is meant to replace the optical zoom.
Optical zoom is an expensive, heavy and complicated device with over 100 parts. Some other drawbacks are: long development times, very complex optical calculations, the large number of the lenses and it can't be miniaturized.
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