Patents by Inventor Maddalena Ferrario

Maddalena Ferrario 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).

  • A TOOL FOR A BENDING PRESS AND AN APPARATUS FOR MONITORING THE STRESS EXERTED BY SAID TOOL
    Publication number: 20220314292
    Abstract: Disclosed is a tool for a press brake, of the type adapted to produce a bend line in a sheet material, where the tool includes a body connectable to a movable or fixed part of a press brake, characterized by including at least one optical fibre a section of which is fixed stably to a surface of the body, and wherein in the section the optical fibre includes at least one Bragg grating.
    Type: Application
    Filed: August 7, 2020
    Publication date: October 6, 2022
    Inventors: Luca ARGELLATI, Maddalena FERRARIO, Marco BRUNERO
  • Method of making a low PMD optical fiber
    Patent number: 8443631
    Abstract: A method of making an optical fiber includes the steps of: providing an optical fiber preform; heating an end portion of the optical fiber preform so as to obtain a softened preform end portion; drawing the softened preform end portion to form the optical fiber; applying to the optical fiber a substantially sinusoidal spin having a spin amplitude and a spin period, the substantially sinusoidal spin being transmitted to the softened preform end portion, and determining an actual spin amplitude applied to the fiber, wherein the actual spin amplitude is the spin amplitude applied in correspondence to the softened preform end portion. The spin amplitude and spin period of the substantially sinusoidal spin are selected in such a way that a ratio of the actual spin amplitude to the spin period is in the range of approximately 0.8 to approximately 1.4 turns/m2.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: May 21, 2013
    Assignee: Prysmian S.p.A.
    Inventors: Davide Sarchi, Maddalena Ferrario
  • Method of making a low PMD optical fiber
    Publication number: 20100232754
    Abstract: A method of making an optical fiber includes the steps of: providing an optical fiber preform; heating an end portion of the optical fiber preform so as to obtain a softened preform end portion; drawing the softened preform end portion to form the optical fiber; applying to the optical fiber a substantially sinusoidal spin having a spin amplitude and a spin period, the substantially sinusoidal spin being transmitted to the softened preform end portion, and determining an actual spin amplitude applied to the fiber, wherein the actual spin amplitude is the spin amplitude applied in correspondence to the softened preform end portion. The spin amplitude and spin period of the substantially sinusoidal spin are selected in such a way that a ratio of the actual spin amplitude to the spin period is in the range of approximately 0.8 to approximately 1.4 turns/m2.
    Type: Application
    Filed: June 22, 2006
    Publication date: September 16, 2010
    Inventors: Davide Sarchi, Maddalena Ferrario