Patents by Inventor Freddy DUMONT

Freddy DUMONT 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).

  • Respiratory protection hood
    Patent number: 10342998
    Abstract: A hood comprising a flexible envelope and a reservoir of oxygen comprising a calibrated outlet orifice that leads into the internal volume of the envelope, the outlet orifice being closed off by a removable stopper, characterized in that the reservoir of pressurized oxygen comprises two independent storage compartments, a first compartment of which communicates with the outlet orifice and a second compartment of which is isolated from the outlet orifice via a sealed partition provided with a member for opening the partition, the opening member being switchable between a first configuration which prevents fluidic communication between the second compartment and the outlet orifice and a second configuration that allows fluidic communication between the second compartment and the outlet orifice, the opening member being sensitive to the pressure difference between the second compartment and the first compartment and being configured to automatically switch from the first to the second configuration when the pres
    Type: Grant
    Filed: May 2, 2014
    Date of Patent: July 9, 2019
    Assignee: L'Air Liquide, Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude
    Inventors: Rachid Makhlouche, Jean-Michel Cazenave, Freddy Dumont, Christian Rolland, Benoit Rossignol
  • Respiratory protection equipment
    Patent number: 10335617
    Abstract: Respiratory protection hood comprising a flexible envelope and a reservoir of pressurized oxygen comprising an outlet orifice that leads into the internal volume of the envelope, the outlet orifice being closed off by a removable stopper, characterized in that the reservoir of oxygen comprises, upstream of the orifice, a passage for the pressurized gas and a needle that is able to move in a given direction of displacement in said passage, the needle being subjected to two opposite forces in the direction of displacement, said forces being respectively generated on the one hand by the pressure of the gas in the reservoir and the other hand by a return member, the needle having a section with a defined profile that is variable in the direction of displacement in order to modify the degree of closure of the passage depending on the position of said needle relative to the passage so as to regulate the flow rate of gas allowed to escape via the passage towards the orifice as a function of time and the pressure of
    Type: Grant
    Filed: May 2, 2014
    Date of Patent: July 2, 2019
    Assignee: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude
    Inventors: Rachid Makhlouche, Jean-Michel Cazenave, Freddy Dumont, Christian Rolland, Vincent Perrard
  • RESPIRATORY PROTECTION EQUIPMENT
    Publication number: 20160151649
    Abstract: Respiratory protection hood comprising a flexible envelope and a reservoir of pressurized oxygen comprising an outlet orifice that leads into the internal volume of the envelope, the outlet orifice being closed off by a removable stopper, characterized in that the reservoir of oxygen comprises, upstream of the orifice, a passage for the pressurized gas and a needle that is able to move in a given direction of displacement in said passage, the needle being subjected to two opposite forces in the direction of displacement, said forces being respectively generated on the one hand by the pressure of the gas in the reservoir and the other hand by a return member, the needle having a section with a defined profile that is variable in the direction of displacement in order to modify the degree of closure of the passage depending on the position of said needle relative to the passage so as to regulate the flow rate of gas allowed to escape via the passage towards the orifice as a function of time and the pressure of
    Type: Application
    Filed: May 2, 2014
    Publication date: June 2, 2016
    Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et I'Exploitation des Procedes Georges Claude
    Inventors: Rachid MAKHLOUCHE, Jean-Michel CAZENAVE, Freddy DUMONT, Christian ROLLAND, Vincent PERRARD
  • RESPIRATORY PROTECTION HOOD
    Publication number: 20160121146
    Abstract: A hood comprising a flexible envelope and a reservoir of oxygen comprising a calibrated outlet orifice that leads into the internal volume of the envelope, the outlet orifice being closed off by a removable stopper, characterized in that the reservoir of pressurized oxygen comprises two independent storage compartments, a first compartment of which communicates with the outlet orifice and a second compartment of which is isolated from the outlet orifice via a sealed partition provided with a member for opening the partition, the opening member being switchable between a first configuration which prevents fluidic communication between the second compartment and the outlet orifice and a second configuration that allows fluidic communication between the second compartment and the outlet orifice, the opening member being sensitive to the pressure difference between the second compartment and the first compartment and being configured to automatically switch from the first to the second configuration when the pres
    Type: Application
    Filed: May 2, 2014
    Publication date: May 5, 2016
    Applicant: L'Air Liquide, Societe Anonyme pour I'Etude et I'Exploitation des Procedes Georges Claude
    Inventors: Rachid MAKHLOUCHE, Jean-Michel CAZENAVE, Freddy DUMONT, Christian ROLLAND, Benit ROSSIGNOL