Patents by Inventor Helena Engvist

Helena Engvist 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 of making and apparatus to make a tampon applicator
    Patent number: 6511451
    Abstract: Tampon applicator for feminine hygiene, comprising a cylindrical applicator barrel of paper-like material, having a front end comprising segments which are bent forwards and inward with respect to the longitudinal center axis of the applicator barrel, forming a dome whereby a weakening of the segments is provided for reducing their resistance to a spreading movement of the segments during the pushing out of a tampon from the applicator barrel. The bases of the segments are formed by the front, solid-cylindrical end of the applicator barrel and the weakening of the segments is provided on the inner surface and at an axial distance from the base of the segments. The tampon applicator reduces the ejecting pressure by means of the predetermined breaking lines at the inner surface of each segment while the smooth outside of the segments reduces irritations when in use. Additionally, the invention relates to a process and an apparatus for manufacturing said tampon applicator.
    Type: Grant
    Filed: August 17, 1999
    Date of Patent: January 28, 2003
    Inventors: Hans Werner Schoelling, Helena Engvist
  • Tampon applicator
    Patent number: 6450985
    Abstract: Tampon applicator for feminine hygiene, comprising a cylindrical applicator barrel of paper-like material, having a front end comprising segments which are bent forwards and inward with respect to the longitudinal center axis of the applicator barrel, forming a dome whereby a weakening of the segments is provided for reducing their resistance to a spreading movement of the segments during the pushing out of a tampon from the applicator barrel. The bases of the segments are formed by the front, solid-cylindrical end of the applicator barrel and the weakening of the segments is provided on the inner surface and at an axial distance from the base of the segments. The tampon applicator reduces the ejecting pressure by means of the predetermined breaking lines at the inner surface of each segment while the smooth outside of the segments reduces irritations when in use. Additionally, the invention relates to a process and an apparatus for manufacturing said tampon applicator.
    Type: Grant
    Filed: January 31, 1996
    Date of Patent: September 17, 2002
    Inventors: Hans Werner Schoelling, Helena Engvist