Title:
呼吸保護装置
Document Type and Number:
Japanese Patent JP6612218
Kind Code:
B2
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 gas in the reservoir.
Inventors:
Perard, Vincent
Casenave, Jean Michel
Dumont, Freddie
Macroche, Rashid
Laurent, Christian
Casenave, Jean Michel
Dumont, Freddie
Macroche, Rashid
Laurent, Christian
Application Number:
JP2016518556A
Publication Date:
November 27, 2019
Filing Date:
May 02, 2014
Export Citation:
Assignee:
Rail Liquide-Societe Anonym Pools Retude e Rex Prosatation de Procede Georges Claude
International Classes:
A62B7/14; B64D13/00
Domestic Patent References:
| JP62503014A | ||||
| JP3310447B1 | ||||
| JP61124768U | ||||
| JP2000506249A | ||||
| JP2008229308A |
Attorney, Agent or Firm:
Kurata Masatoshi
Nobuhisa Nogawa
Naoki Kono
Tadashi Inoue
Ukai Ken
Shigeru Iino
Nobuhisa Nogawa
Naoki Kono
Tadashi Inoue
Ukai Ken
Shigeru Iino