2. The invention patent of angular acceleration sensor was granted on 20 10 (first).
3. Grating torque sensor invention patent 2006 438+02 authorized (item 1)
4. Patent authorization for invention of hydraulic power-assisted escalator 20 12 (first).
5. The invention patent of electromagnetic ultrasonic composite motor and its control method was granted 20 1 1 year (for the first time).
6. The invention patent of a permanent magnet suspension damping spring was granted on 20 12 (item 1).
7. The invention patent of air damping cavity controllable permanent magnet suspension damping spring was granted on 20 1 1 year (for the first time).
10 Many practical patents