Patents by Inventor Erling Roymberg

Erling Roymberg 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).

  • Stretching means for braking a web of plastic sheet which is pulled off a reel
    Patent number: 4841716
    Abstract: The invention relates to a stretching means for braking a web of plastic sheet which is pulled off a reel. The stretching means comprises an arm (4) which is mounted to be slewable about an axis (5) extending in parallel with the axis (3) of said plastic sheet reel, a first roller (6) which is pivotally mounted on arm (4) and is intended to be made to rest against reel (2). Furthermore, the stretching means comprises a second roller (7) which is pivotally mounted on arm (4) to receive a loop of plastic sheet web (12) which is pulled off said reel (2) to cause said second roller (7) to be pulled towards said reel (2), and a drive connection (8) between said two rollers (6,7) causing the plastic sheet web to be stretched in zone (13) between the plastic sheet reel and the looped roller (7) when said web is pulled off the reel.
    Type: Grant
    Filed: May 13, 1988
    Date of Patent: June 27, 1989
    Assignee: Underhaug A/S
    Inventor: Erling Roymberg