Patents by Inventor Petrus J. M. Beris

Petrus J. M. Beris 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).

  • Stamp and device for providing drops of a viscous liquid on a substrate
    Patent number: 4594961
    Abstract: A form of stamp in which a height/diameter ratio of a drop of glue can be achieved which is larger than one fifth, for providing drops of glue on printed circuit boards or components in assembling electrical chip components. A projection having a height between one-tenth and one-half the largest stamp end face dimension, and a cross section less than one-quarter the end face area, projects from the center of the end face. These stamps reduce the effect of machine stoppage on the shape and dimension of the drops of glue.
    Type: Grant
    Filed: November 29, 1984
    Date of Patent: June 17, 1986
    Assignee: U.S. Philips Corporation
    Inventors: Petrus J. M. Beris, Jan J. Wondergem, Hendrik J. Vledder