GB492360A - Improvements in gas masks - Google Patents

Improvements in gas masks

Info

Publication number
GB492360A
GB492360A GB34337/36A GB3433736A GB492360A GB 492360 A GB492360 A GB 492360A GB 34337/36 A GB34337/36 A GB 34337/36A GB 3433736 A GB3433736 A GB 3433736A GB 492360 A GB492360 A GB 492360A
Authority
GB
United Kingdom
Prior art keywords
mask
pump
pipe
gas
disposed
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.)
Expired
Application number
GB34337/36A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB492360A publication Critical patent/GB492360A/en
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
    • A62B18/006—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)

Abstract

Air is pumped into a gas-mask by a pump actuated by the wearer of the mask and disposed in front of or behind a filter. The pump may be arm- or foot-actuated, or operated by the movement of walking. A chamber of constant or variable volume may be disposed between the mask and pump. The air inlet pipe may be provided near the mask with a valve preventing exhaled air from entering the pipe. Other pipes providing for the respiration of other people may be connected to this pipe. Reference is made to the application of the invention to apparatus working in a closed cycle and to the addition of compressed oxygen or other gas.
GB34337/36A 1935-12-12 1936-12-14 Improvements in gas masks Expired GB492360A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU492360X 1935-12-12

Publications (1)

Publication Number Publication Date
GB492360A true GB492360A (en) 1938-09-19

Family

ID=19732756

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34337/36A Expired GB492360A (en) 1935-12-12 1936-12-14 Improvements in gas masks

Country Status (1)

Country Link
GB (1) GB492360A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0332605A2 (en) * 1988-03-09 1989-09-13 J. Blaschke Pumpen-Filteranlagen Protective garment ventilation device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0332605A2 (en) * 1988-03-09 1989-09-13 J. Blaschke Pumpen-Filteranlagen Protective garment ventilation device
EP0332605A3 (en) * 1988-03-09 1990-12-27 J. Blaschke Pumpen-Filteranlagen Protective garment ventilation device

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