Patents by Inventor Sven A. Hemgren

Sven A. Hemgren 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: 4267949
    Abstract: The invention concerns a device for separating tape portions of mutually equal length from a tape of flexible material. Said tape is provided with a plurality of slots spaced at mutually equal distances, said slots extending obliquely relative to the longitudinal direction of the tape substantially over the whole width thereof, so that short unslotted edge portions are left at each tape edge. Said tape passes through a guide channel along a first bottom portion thereof and over a steplike ledge at its end and below an adjacent elongated member which resiliently presses said tape into engagement with a subsequent second bottom portion of the guide channel.
    Type: Grant
    Filed: October 1, 1979
    Date of Patent: May 19, 1981
    Assignee: Esselte Pendaflex Corp.
    Inventor: Sven A. Hemgren