Patents by Inventor Gregory S. Shaffer

Gregory S. Shaffer 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).

  • Method and apparatus for deposition of solder paste on a printed wiring board
    Patent number: 5254362
    Abstract: A method and apparatus for uniformly depositing solder paste on a printed wiring board. A squeegee arrangement applies solder paste through a stencil to a surface of a printed wiring board. As the squeegee assembly is moved in one planar direction over the stencil in a planar fashion, it is also vibrated by a vibrator to produce slight circular motion in addition to the planar motion of the squeegee blade.
    Type: Grant
    Filed: October 23, 1992
    Date of Patent: October 19, 1993
    Assignee: Motorola, Inc.
    Inventors: Gregory S. Shaffer, Anthony R. Weeks