According to the report, the patent that won the gold medal in China Patent and Invention Expo is (CN 1 146092 A), and the query results of the patent retrieval system are as follows:
The current legal status is:
Therefore, this patent is not authorized at all, and there is no so-called "China Patent and Invention Expo".
Li Hongtao applied for a patent under the pseudonym of Yang Hongjun. Taking Yang Hongjun as the search term, it is found that it has one authorized invention patent, two utility models and two unauthorized invention patent applications. The only authorized invention patent expires in five years, and no annual fee is paid. Imagine, if it is a very awesome patent, will it be abandoned because of a small annual fee?
Nowadays, the popular motor in the market is permanent magnet brushless excitation, which is not the brushless excitation claimed in the report. Technically, the necessary components of a rotating electric machine are stator and rotor. If permanent magnets are not used, both sides should be excited. If the stator and rotor are energized, they must be energized. In this case, the rotor must be excited by slip rings. Once a slip ring is added, it is no different from a brush and is invalid in principle.
Reading through these reports, it is not difficult to find that Kunming Detention Center has played a decisive role in Li Hongtao's invention and creation. If the director hadn't given him a proving ground for research and invention, everything would have been empty talk, mainly because the relevant leaders volunteered at the critical moment and asked experts for guidance, which made Li Hongtao achieve certain results. So Li Hongtao's invention is not particularly eye-catching.
/a 6 efce 1b9d 16 fdfa 4 ef 95 179 b 88 F8 c 5495 ee7b 94？ x-BCE-process = image % 2f resize % 2Cm _ lfit % 2Cw _ 600% 2Ch _ 800% 2c limit _ 1% 2f quality % 2Cq _ 85% 2f format % 2Cf _ auto