FR2430775A1 - Capuchon de protection a filtre a bruit - Google Patents

Capuchon de protection a filtre a bruit

Info

Publication number
FR2430775A1
FR2430775A1 FR7918298A FR7918298A FR2430775A1 FR 2430775 A1 FR2430775 A1 FR 2430775A1 FR 7918298 A FR7918298 A FR 7918298A FR 7918298 A FR7918298 A FR 7918298A FR 2430775 A1 FR2430775 A1 FR 2430775A1
Authority
FR
France
Prior art keywords
silencer
air
helmet
noise filter
protection cap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7918298A
Other languages
English (en)
Other versions
FR2430775B1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NUCLEAR ENVIRONMENTAL PROTECTI
Original Assignee
NUCLEAR ENVIRONMENTAL PROTECTI
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NUCLEAR ENVIRONMENTAL PROTECTI filed Critical NUCLEAR ENVIRONMENTAL PROTECTI
Publication of FR2430775A1 publication Critical patent/FR2430775A1/fr
Application granted granted Critical
Publication of FR2430775B1 publication Critical patent/FR2430775B1/fr
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/04—Gas helmets

Landscapes

  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Exhaust Silencers (AREA)
  • Emergency Lowering Means (AREA)
  • Prevention Of Fouling (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Ventilation (AREA)
  • Helmets And Other Head Coverings (AREA)

Abstract

L'invention concerne un capuchon de protection contre des environnements atmosphériques nocifs et réduisant le bruit provenant de l'air sous pression qui y est introduit. L'ensemble comprend un casque 10 et un sous-ensemble 12 constituant un filtre disposé à l'intérieur du casque contre sa paroi supérieure. Le filtre comprend un silencieux disposé à l'intérieur d'un organe en mousse à cellules ouvertes, perméable à l'air de manière que l'air introduit dans le silencieux suive un passage dans le silencieux et dans la mousse avec pour résultat une reduction du niveau de bruit de l'air. Application : casques de protection dans les industries chimiques et nucléaires.
FR7918298A 1978-07-14 1979-07-13 Capuchon de protection a filtre a bruit Expired FR2430775B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/924,654 US4207883A (en) 1978-07-14 1978-07-14 Hood assembly with noise filter

Publications (2)

Publication Number Publication Date
FR2430775A1 true FR2430775A1 (fr) 1980-02-08
FR2430775B1 FR2430775B1 (fr) 1985-08-16

Family

ID=25450497

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7918298A Expired FR2430775B1 (fr) 1978-07-14 1979-07-13 Capuchon de protection a filtre a bruit

Country Status (6)

Country Link
US (1) US4207883A (fr)
JP (1) JPS5832993B2 (fr)
CA (1) CA1124001A (fr)
DE (1) DE2927805C2 (fr)
FR (1) FR2430775B1 (fr)
GB (1) GB2026306B (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411264A (en) * 1980-07-25 1983-10-25 Nuclear Power Outfitters Supplied air respirator
US4683880A (en) * 1981-01-27 1987-08-04 E. I. Du Pont De Nemours And Company Toxic fume protective hood and method of construction
US4466432A (en) * 1981-09-16 1984-08-21 Mine Safety Appliances Co. Air supplying hood
US4458680A (en) * 1982-05-28 1984-07-10 The United States Of America As Represented By The United States Department Of Energy Protective supplied breathing air garment
US6340024B1 (en) 1993-01-07 2002-01-22 Dme Corporation Protective hood and oral/nasal mask
GB0307198D0 (en) * 2003-03-28 2003-04-30 3M Innovative Properties Co Rigid air ducting for respirator hoods and helmets
FR2869810B1 (fr) * 2004-05-10 2006-07-28 Delta Prot Scaphandre ventile apte a etre porte par une personne notamment en milieux hostiles
JP4583448B2 (ja) * 2004-07-14 2010-11-17 バエ パーク，チュン エアラインフード用消音器及びそのエアラインフード用消音器が装着された防護フード
US7520925B2 (en) * 2005-12-21 2009-04-21 Sure Seal, Inc. Filter and silencer with a quick disconnect lid
US10150071B2 (en) 2011-04-18 2018-12-11 Bulk Tank, Inc. Filter guide ring
US8657898B2 (en) 2011-09-22 2014-02-25 Bulk Tank, Inc. Air filter spin flow inlet/outlet housing
WO2013163208A1 (fr) * 2012-04-23 2013-10-31 Mazyck David W Système de purification d'air pour casque
DE102014005544A1 (de) 2014-04-16 2015-10-22 Sata Gmbh & Co. Kg Atemschutzvorrichtung
DE202014003214U1 (de) * 2014-04-16 2015-03-11 Sata Gmbh & Co. Kg Atemschutzvorrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2888011A (en) * 1949-10-12 1959-05-26 Kenneth E Penrod Helmet seal
US2896617A (en) * 1955-11-03 1959-07-28 Wesley A Gibbons Air supplied hood structure
US3911914A (en) * 1974-06-06 1975-10-14 Johansson Sven Olof Gustav Ventilated head cover and safety hood
US3927668A (en) * 1972-03-23 1975-12-23 Bullard Co Dual purpose air inlet method for head enclosure
US4052984A (en) * 1976-03-25 1977-10-11 E. D. Bullard Company Plenum type air distribution system for head enclosure
US4127130A (en) * 1977-06-02 1978-11-28 Naysmith Kenneth D Air muffler

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1878464A (en) * 1929-07-24 1932-09-20 Frederick R M Bulmer Mask
US2262522A (en) * 1939-11-24 1941-11-11 William P Yant Hood
US2372618A (en) * 1942-12-28 1945-03-27 Vokes Cecil Gordon Combined air filter and silencer
US2447433A (en) * 1945-07-30 1948-08-17 Russell N Schroeder Protective hood
US2552847A (en) * 1948-11-22 1951-05-15 Farr Co Air handling apparatus
NL260585A (fr) * 1960-01-28
US3078845A (en) * 1961-03-24 1963-02-26 Wilbur F Kohlmeyer Portable dust eliminator
US3258010A (en) * 1963-06-19 1966-06-28 Mine Safety Appliances Co Protective headgear
US3308610A (en) * 1964-03-31 1967-03-14 Robbins & Myers Fluid apparatus for removing mist or vapors from the air
US3882961A (en) * 1974-04-01 1975-05-13 Servicemaster Ind Muffler for vacuum-inducing motor
US4055173A (en) * 1975-04-21 1977-10-25 Knab James V Surgical masking and ventilating system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2888011A (en) * 1949-10-12 1959-05-26 Kenneth E Penrod Helmet seal
US2896617A (en) * 1955-11-03 1959-07-28 Wesley A Gibbons Air supplied hood structure
US3927668A (en) * 1972-03-23 1975-12-23 Bullard Co Dual purpose air inlet method for head enclosure
US3911914A (en) * 1974-06-06 1975-10-14 Johansson Sven Olof Gustav Ventilated head cover and safety hood
US4052984A (en) * 1976-03-25 1977-10-11 E. D. Bullard Company Plenum type air distribution system for head enclosure
US4127130A (en) * 1977-06-02 1978-11-28 Naysmith Kenneth D Air muffler

Also Published As

Publication number Publication date
CA1124001A (fr) 1982-05-25
DE2927805A1 (de) 1980-01-31
US4207883A (en) 1980-06-17
GB2026306B (en) 1982-08-25
GB2026306A (en) 1980-02-06
JPS5556877A (en) 1980-04-26
JPS5832993B2 (ja) 1983-07-16
DE2927805C2 (de) 1985-07-11
FR2430775B1 (fr) 1985-08-16

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Legal Events

Date Code Title Description
ST Notification of lapse