Patents by Inventor Giovanni Maitan

Giovanni Maitan 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).

  • Compensator roll arrangement in a warp let-off
    Patent number: 4974639
    Abstract: A warp yarn tensioning device for a loom, in which the warp yarns are wound about a compensator roller through an arc of approximately 180.degree.. The roller is movable against the action of counteracting springs either by rotation or by translation in the direction of the thus wound substantially parallel warp yarns and is supported about an axis by bearings. The device operates in feeding the shed with yarns from the warp beam and in maintaining a constant yarn tension during loom operation. This is accomplished by supporting the compensator roll to undergo only a small amount of swing or translational movement in order to follow the warp yarn tension variations.
    Type: Grant
    Filed: October 3, 1989
    Date of Patent: December 4, 1990
    Assignee: Nuovopignone-Industrie Meccaniche E Fonderia S.p.A.
    Inventors: Giovanni Maitan, Luigi Corazzola, Enrico Fin, Giampietro F. Aggradi