Can anyone tell me the difference between utility model patents and invention patents? It's best to give an example

Utility model is to protect a product. For example, other people use rotating barrels, and you have improved in this aspect and have a rolling barrel type, which is much better than the original one. Then you can apply for utility model. New patent.

An invention patent protects a technology or method. For example, others use water washing, but you have invented dry cleaning technology, which is effective and low-cost. Then you can apply for an invention patent for this method and technology.

For example, if you invented the washing machine, depending on your technical points, if you want to protect your product, apply for a utility model patent; if you want to protect the technology, then apply for an invention patent.