Patents by Inventor David Gonzalez Arrabal

David Gonzalez Arrabal 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).

  • Energy-efficient and reliable operation of a vacuum waste collection system
    Patent number: 9073706
    Abstract: Vacuum waste collection system is provided (1a) by successively selecting a number of branches in a sequence for emptying and transport of waste, wherein the intersection (1, 2, 3, 4) of each next branch in the sequence is at the same o shorter transport distance to a central waste collection point (6) compared to the intersection (1, 2, 3, 4) of the previous branch in the sequence, and collectively transporting accumulated waste from the selected branches towards the central waste collection point (6) by successively operating the air inlet valves (av1, av2, av3, av4, av5) of the corresponding branches.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: July 7, 2015
    Assignee: Envac AB
    Inventors: David Gonzalez Arrabal, Niklas Mattias Forestier
  • ENERGY-EFFICIENT AND RELIABLE OPERATION OF A VACUUM WASTE COLLECTION SYSTEM
    Publication number: 20130243536
    Abstract: Vacuum waste collection system is provided (1a) by successively selecting a number of branches in a sequence for emptying and transport of waste, wherein the intersection (1, 2, 3, 4) of each next branch in the sequence is at the same o shorter transport distance to a central waste collection point (6) compared to the intersection (1, 2, 3, 4) of the previous branch in the sequence, and collectively transporting accumulated waste from the selected branches towards the central waste collection point (6) by successively operating the air inlet valves (av1, av2, av3, av4, av5) of the corresponding branches.
    Type: Application
    Filed: June 23, 2010
    Publication date: September 19, 2013
    Applicant: ENVAC AB
    Inventors: David Gonzalez Arrabal, Niklas Mattias Forestier
  • ENERGY-EFFICIENT AND RELIABLE OPERATION OF A VACUUM WASTE COLLECTION SYSTEM
    Publication number: 20130089380
    Abstract: Vacuum waste collection system is provided (1a) by successively selecting a number of branches in a sequence for emptying and transport of waste, wherein the intersection (1, 2, 3, 4) of each next branch in the sequence is at the same o shorter transport distance to a central waste collection point (6) compared to the intersection (1, 2, 3, 4) of the previous branch in the sequence, and collectively transporting accumulated waste from the selected branches towards the central waste collection point (6) by successively operating the air inlet valves (av1, av2, av3, av4, av5) of the corresponding branches.
    Type: Application
    Filed: June 23, 2010
    Publication date: April 11, 2013
    Applicant: ENVAC AB
    Inventors: David Gonzalez Arrabal, Niklas Mattias Forestier