Patents by Inventor Keyou Jin

Keyou Jin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Battery powered concrete vibrator
    Patent number: 9695605
    Abstract: A battery powered concrete vibrator is provided with a vibration head; a brushless DC motor disposed in the vibration head; a drive shaft disposed in the vibration head, rotatably disposed through the brushless DC motor, and operatively driven by the brushless DC motor, the drive shaft including a lengthwise groove on an outer surface, thereby rendering the drive shaft unbalanced; and a groove-shaped vibration member put on the drive shaft. The drive shaft can impart rotation to the vibration member.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: July 4, 2017
    Inventor: Keyou Jin
  • BATTERY POWERED CONCRETE VIBRATOR
    Publication number: 20140241105
    Abstract: A battery powered concrete vibrator is provided with a vibration head; a brushless DC motor disposed in the vibration head; a drive shaft disposed in the vibration head, rotatably disposed through the brushless DC motor, and operatively driven by the brushless DC motor, the drive shaft including a lengthwise groove on an outer surface, thereby rendering the drive shaft unbalanced; and a groove-shaped vibration member put on the drive shaft. The drive shaft can impart rotation to the vibration member.
    Type: Application
    Filed: November 2, 2012
    Publication date: August 28, 2014
    Inventor: Keyou Jin