Patents by Inventor David de Carvalho

David de Carvalho 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).

  • Curved tubular spout with distal chamfer
    Patent number: 8534511
    Abstract: Improvement in a pouring spout for liquids of various viscosities comprising a small tube with adequate diameter and length (1) presenting its distal extremity curved in a cuneiform angle (2) forming a pouring mouth (3), oval or elliptical, angularly oriented downwards, which larger axis (4) extends longitudinally along with such small tube (1) so that its superior extremity or superior distal edge (5) is extended outwards and its inferior opposite edge (6) is retreated backwards.
    Type: Grant
    Filed: September 2, 2008
    Date of Patent: September 17, 2013
    Inventor: David de Carvalho
  • Air vent for liquid containers, based on the principle of communicating vessels
    Patent number: 8196785
    Abstract: An air vent for liquid containers such as baby bottles, flasks, or the like, for containing any liquid easily poured through an upper spout such as a nipple or a hard plastic spout or even a metal spout. The container includes an air vent defined by a system based on the principle of communicating vessels acted upon by equal air pressures, defined by a duct of an adequate diameter placed in a vertical or oblique manner, whose lower end is placed inside and in the bottom of the container, while the upper end defines an external air inlet that is open to external air.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: June 12, 2012
    Inventor: David de Carvalho
  • Air Vent for Liquid Containers, Based on the Principle of Communicating Vessels
    Publication number: 20110042340
    Abstract: An air vent for liquid containers such as baby bottles, flasks, or the like, for containing any liquid easily poured through an upper spout such as a nipple or a hard plastic spout or even a metal spout. The container includes an air vent defined by a system based on the principle of communicating vessels acted upon by equal air pressures, defined by a duct of an adequate diameter placed in a vertical or oblique manner, whose lower end is placed inside and in the bottom of the container, while the upper end defines an external air inlet that is open to external air.
    Type: Application
    Filed: October 28, 2010
    Publication date: February 24, 2011
    Inventor: David de Carvalho
  • Pouring Spout For Liquids of Various Viscosities
    Publication number: 20100181349
    Abstract: Improvement in a pouring spout for liquids of various viscosities comprising a small tube with adequate diameter and length (1) presenting its distal extremity curved in a cuneiform angle (2) forming a pouring mouth (3), oval or elliptical, angularly oriented downwards, which larger axis (4) extends longitudinally along with such small tube (1) so that its superior extremity or superior distal edge (5) is extended outwards and its inferior opposite edge (6) is retreated backwards.
    Type: Application
    Filed: September 2, 2008
    Publication date: July 22, 2010
    Inventor: David de Carvalho