Patents by Inventor Marco Rovellini

Marco Rovellini 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).

  • Crimping process and a feed device therefor having constant forced contact for crimping yarn
    Patent number: 5564174
    Abstract: In a crimping process in a crimping machine therefor, a compression force on an extended length of a transiting fiber bundle is exerted by and between means for maintaining a continuous and forced contact. The means for maintaining a continuous and forced contact comprise two closed belts, each of which runs around two motorized rollers travelling at a same velocity as the fiber bundle. Pressurized air or steam is injected into the crimping machine in a same direction as an advancement direction of the fiber bundles, but in an opposite sense thereto.
    Type: Grant
    Filed: August 12, 1994
    Date of Patent: October 15, 1996
    Assignee: Moroder SA
    Inventors: Marco Rovellini, Gianluigi Mongiorgi