ATE28572T1 - RESPIRATOR. - Google Patents

RESPIRATOR.

Info

Publication number
ATE28572T1
ATE28572T1 AT83302484T AT83302484T ATE28572T1 AT E28572 T1 ATE28572 T1 AT E28572T1 AT 83302484 T AT83302484 T AT 83302484T AT 83302484 T AT83302484 T AT 83302484T AT E28572 T1 ATE28572 T1 AT E28572T1
Authority
AT
Austria
Prior art keywords
facepiece
inlet
filter means
pump unit
air
Prior art date
Application number
AT83302484T
Other languages
German (de)
Inventor
Raymond Odell
Richard Kevin O'connor
David Brian Edward
Original Assignee
Racal Safety Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10530349&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE28572(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Racal Safety Ltd filed Critical Racal Safety Ltd
Application granted granted Critical
Publication of ATE28572T1 publication Critical patent/ATE28572T1/en

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
    • A62B18/006—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 with pumps for forced ventilation

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)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Electroluminescent Light Sources (AREA)
  • Dc Digital Transmission (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

The present invention relates to improvements in power assisted positive pressure respirators for use in contaminated atmospheres. The respirator comprises a facepiece 1 having an inlet 3 connected to a pump unit 5 for supplying air to the facepiece which has been filtered by filter means 11 connected to the pump unit inlet. The facepiece is also provided with an outlet provided witha one-way valve 2 which is biased to its closed position and is openable when a predetermined pressure above atmospheric pressure is established within the facepiece. To maximise use of the filter means 11, a one-way inlet valve 13 is provided intermediate the pump unit 5 and the facepiece 1, conveniently at the inlet to the facepiece, which is closed during exhalation by the wearer to thereby cause the pump to be placed in a condition in which, although it continues to operate, no or substantially no air is moved thereby, so that during this period, no or substantially no air is drawn through the filter means 11.
AT83302484T 1982-05-13 1983-05-03 RESPIRATOR. ATE28572T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8214007 1982-05-13
EP83302484A EP0094757B1 (en) 1982-05-13 1983-05-03 Respirator

Publications (1)

Publication Number Publication Date
ATE28572T1 true ATE28572T1 (en) 1987-08-15

Family

ID=10530349

Family Applications (1)

Application Number Title Priority Date Filing Date
AT83302484T ATE28572T1 (en) 1982-05-13 1983-05-03 RESPIRATOR.

Country Status (8)

Country Link
EP (1) EP0094757B1 (en)
JP (1) JPS58209362A (en)
AT (1) ATE28572T1 (en)
AU (1) AU554194B2 (en)
DE (1) DE3372713D1 (en)
FI (1) FI831691L (en)
NO (1) NO831677L (en)
ZA (1) ZA833204B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO842275L (en) * 1983-06-07 1984-12-10 Racal Safety Ltd RESPIRATOR.
AU4275385A (en) * 1984-06-06 1985-12-12 Racal Safety Ltd. Respirators fan-assisted
DE3523097A1 (en) * 1984-11-15 1986-05-22 Gesellschaft für Gerätebau mbH, 4600 Dortmund RESPIRATORY MASK
GB8608113D0 (en) * 1986-04-03 1986-05-08 Racal Safety Ltd Breathing apparatus
FI80606C (en) * 1987-10-05 1990-07-10 Kemira Oy FOERFARANDE FOER REGLERING AV LUFTMAONGDEN SOM MATAS IN I EN GASMASK SAMT EN GASMASK SOM GENOMFOER DENNA FOERFARANDE.
GB2215615B (en) * 1988-03-21 1991-12-18 Sabre Safety Ltd Breathing apparatus
EP0352938B1 (en) * 1988-07-26 1993-10-06 RACAL HEALTH & SAFETY LIMITED Breathing apparatus
DE3908057C2 (en) * 1989-03-13 1997-03-20 Kemira Oy Method of regulating the amount of air supplied to a gas mask and gas mask to which this method is applied
US5372130A (en) * 1992-02-26 1994-12-13 Djs&T Limited Partnership Face mask assembly and method having a fan and replaceable filter
FI100307B (en) * 1994-02-25 1997-11-14 Kemira Safety Oy A method for controlling the amount of air fed to a gas mask, as well as gas ash
US20040182394A1 (en) 2003-03-21 2004-09-23 Alvey Jeffrey Arthur Powered air purifying respirator system and self contained breathing apparatus
US7647927B2 (en) 2003-08-22 2010-01-19 Wilcox Industries Corp. Self-contained breathing system
CN104248800A (en) * 2013-06-25 2014-12-31 卢献斌 Portable air purifier for mask
CN104225829A (en) * 2014-07-17 2014-12-24 艾尔康居（北京）科技有限公司 Active air feeding type dustproof mask
SG11201707644QA (en) * 2015-04-03 2017-10-30 Microsfere Pte Ltd Respiratory masks, systems and methods
GB201511904D0 (en) * 2015-07-07 2015-08-19 3M Innovative Properties Co Powered exhaust apparatus for a personal protection respiratory device
CN116077848B (en) * 2023-02-27 2023-10-20 江苏海拓科技有限公司 Double-deck floating filter type respirator

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR785223A (en) * 1934-09-21 1935-08-05 Cela Holding S A Portable gas protection device
CH202373A (en) * 1936-06-11 1939-01-15 Bez Casimir Respiratory.
FR1037477A (en) * 1951-05-24 1953-09-17 Clean air inhaler device for painting, sandblasting and other work
FR1320829A (en) * 1962-01-30 1963-03-15 Houilleres Bassin Du Nord Autonomous aerator for breathing in polluted atmosphere
GB2032284B (en) * 1978-10-02 1982-11-10 Racal Safety Ltd Breathing apparatus
GB2058577A (en) * 1979-09-25 1981-04-15 Racal Safety Ltd Improvements in and relating to breathing apparatus
US4430995A (en) * 1981-05-29 1984-02-14 Hilton Joseph R Power assisted air-purifying respirators

Also Published As

Publication number Publication date
FI831691A7 (en) 1983-11-14
EP0094757B1 (en) 1987-07-29
FI831691L (en) 1983-11-14
FI831691A0 (en) 1983-05-13
DE3372713D1 (en) 1987-09-03
EP0094757A3 (en) 1984-05-16
AU1399483A (en) 1983-11-17
JPS58209362A (en) 1983-12-06
ZA833204B (en) 1984-01-25
AU554194B2 (en) 1986-08-14
EP0094757A2 (en) 1983-11-23
NO831677L (en) 1983-11-14

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties