Patents by Inventor Joao Miguel FONTES DA ROCHA CASTRO

Joao Miguel FONTES DA ROCHA CASTRO 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).

  • Backing pad with slots for sanding disks with multiple holes
    Patent number: 9975219
    Abstract: The present invention relates to a backing pad (1) with slots for sanding discs with multiple holes, comprising three parts, upper, intermediate and lower, joined together by a fastening system in which the upper part (2), with a frustoconical shape, includes suction holes (7) and a central hole (8), characterized in that the intermediate part (3) comprises intermediate suction slots (5), a central hole (8?) and in the rear face some suction channels (6) bordered by upraised walls (10); and the lower part (4), with a frustoconical shape, and in which the intermediate part (3) will engage, comprises lower suction slots (11) and a central hole (8?), and said lower suction slots (11) are arranged in rings, concentric and equidistant between them, and the size of each of the lower suction slots (11) increases from the center to the periphery.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: May 22, 2018
    Assignee: INDASA-INDUSTRIA DE ABRASIVOS S.A.
    Inventors: Joao Miguel Fontes Da Rocha Castro, Alfredo Manuel Farela Vizinho, Oscar Emanuel Ratola Branco
  • BACKING PAD WITH SLOTS FOR SANDING DISKS WITH MULTIPLE HOLES
    Publication number: 20160354900
    Abstract: The present invention relates to a backing pad (1) with slots for sanding discs with multiple holes, comprising three parts, upper, intermediate and lower, joined together by a fastening system in which the upper part (2), with a frustoconical shape, includes suction holes (7) and a central hole (8), characterized in that the intermediate part (3) comprises suction slots (5), a central hole (8?) and in the rear face some suction channels (6) bordered by upraised walls (10); and the lower part (4), with a frustoconical shape, and in which the intermediate part (3) will engage, comprises slots (5) and a central hole (8?), and some suction slots (11) which are arranged in rings, concentric and equidistant between them, and the size of each of the slots (11) increases from the centre to the periphery.
    Type: Application
    Filed: January 15, 2015
    Publication date: December 8, 2016
    Inventors: Joao Miguel FONTES DA ROCHA CASTRO, Alfredo Manuel FARELA VIZINHO, Oscar Ernanuel RATOLA BRANCO