Patents Assigned to Ortho-McNeil, Inc.
  • Patent number: 5601092
    Abstract: A process for drawing, with plug assist, thin walled, closed-ended, tubular articles of thermoplastic elastomer is disclosed as well as a thermoplastic elastomer and apparatus therefor. According to the process, a plug, extensible into the mold cavity, is employed concurrently with a varying air pressure differential across the faces of the preform to bias the flow of the drawn article axially along the length of the tubular mold and away from the mold walls. At a point where the article is drawn substantially the length of the tubular mold, the mold is evacuated and the article finally formed against the mold walls. Such articles are usefully employed as condoms or finger cots.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: February 11, 1997
    Assignee: Ortho-McNeil, Inc.
    Inventors: Robert G. Miller, William C. Miller, Oskar T. Tankovitz
  • Patent number: 5598850
    Abstract: A process for drawing, with plug assist, thin walled, closed-ended, tubular articles of thermoplastic elastomer is disclosed as well as a thermoplastic elastomer and apparatus therefor. According to the process, a plug, extensible into the mold cavity, is employed concurrently with a varying air pressure differential across the faces of the preform to bias the flow of the drawn article axially along the length of the tubular mold and away from the mold walls. At a point where the article is drawn substantially the length of the tubular mold, the mold is evacuated and the article finally formed against the mold walls. Such articles are usefully employed as condoms or finger cots.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: February 4, 1997
    Assignee: Ortho-McNeil, Inc.
    Inventors: Robert G. Miller, William C. Miller, Oskar T. Tankovitz