Patents by Inventor Minghua Chai

Minghua Chai 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).

  • Publication number: 20060261130
    Abstract: The present invention discloses an electromagnetic driving wave soldering pot, includes an electromagnetic pump, a tin bath and a nozzle, and the electromagnetic pump includes an iron core, a coil group provided in the two iron core and a pump slot, the pump slot communicates with the nozzle, and the coils group includes three coils, which are supplied with three-phase alternating current excitation power supply having a phase difference of 120°. Because of the absence of any moving components and thus abrasion, the present invention not only overcomes the defects of being abrased badly and eroded easily, as well as solder being oxidized seriously in the conventional wave soldering pot, but also completely eliminates the power loss caused by the negative magnetic field in the alternating magnetic field, and effectively uses the power of the alternating magnetic field.
    Type: Application
    Filed: August 16, 2005
    Publication date: November 23, 2006
    Applicant: JT Automation Equipment Co., Ltd
    Inventor: Minghua Chai