Patents by Inventor Andre Fernando Tato Macedo Teixeira

Andre Fernando Tato Macedo Teixeira 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).

  • Production process of plastic parts by reaction injection moulding, and related head device
    Patent number: 7708918
    Abstract: The present invention relates to a process and device RIM involving a mixing chamber (1) with opposing injectors (2, 3). The efficiency is maximized through the operation in flow regimes with very strong mixing dynamics, which is assured by means of the introduction of schemes to: detect the flow regime within the mixing chamber, through the dynamic pressure measurement upstream of the injectors (2, 3), using means (5); and/or impose a chaotic flow regime, through the pulsation of the opposed jets, using means (6). Alterations in design, comparatively to the traditional geometries, are also proposed, concerning: the mixing chamber (1), being foreseen a prismatic rectangular chamber; the injectors (2, 3), being foreseen elongated injectors; and even the scheme of injection of the materials, using a third injector (4).
    Type: Grant
    Filed: April 5, 2005
    Date of Patent: May 4, 2010
    Assignee: Faculdade de Engenharia da Universidade do Porto
    Inventors: José Carlos Brito Lopes, Ricardo Jorge Nogueira Dos Santos, André Fernando Tato Macedo Teixeira, Mário Rui Pinto Ferreira Nunes Costa
  • Production Process of Plastic Parts by Reaction Injection Moulding, and Related Head Device
    Publication number: 20080206392
    Abstract: The present invention relates to a process and device RIM involving a mixing chamber (1) with opposing injectors (2, 3). The efficiency is maximised through the operation in flow regimes with very strong mixing dynamics, which is assured by means of the introduction of schemes to: detect the flow regime within the mixing chamber, through the dynamic pressure measurement upstream of the injectors (2, 3), using means (5); and/or impose a chaotic flow regime, through the pulsation of the opposed jets, using means (6). Alterations in design, comparatively to the traditional geometries, are also proposed, concerning: the mixing chamber (1), being foreseen a prismatic rectangular chamber; the injectors (2, 3), being foreseen elongated injectors; and even the scheme of injection of the materials, using a third injector (4).
    Type: Application
    Filed: April 5, 2005
    Publication date: August 28, 2008
    Inventors: Jose Carlos Brito Lopes, Ricardo Jorge Nogueira Dos Santos, Andre Fernando Tato Macedo Teixeira, Mario Rui Pinto Ferreira Nunes Costa