Patents by Inventor Edward H. Drab

Edward H. Drab 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).

  • Patent number: 3949040
    Abstract: A method and apparatus for molding rubber to an article, e.g. a two-color rubber sole onto a lasted upper of an article of footwear, are disclosed. Unvulcanized rubber of one color is placed into a mold cavity bounded by the article, openable peripheral side ring means, and a movable mold member, e.g. a sole plate, located opposite the article. The movable mold member is provided with a peripheral outwardly extending lip for forming, in the rubber flash escaping around the periphery of the movable mold member, a peripherally extending weakened region. A peripherally extending groove is also provided in the movable mold member adjacent the lip to the side of the latter facing away from the article, for forming the flash rubber escaping past the lip into a bead. In the method, a first rubber to be molded is introduced into the cavity and the movable mold member is then advanced toward the article until the first rubber is spread against the article.
    Type: Grant
    Filed: April 25, 1974
    Date of Patent: April 6, 1976
    Assignee: Uniroyal Inc.
    Inventor: Edward H. Drab