FR845815A - Improvements to gas protection masks - Google Patents

Improvements to gas protection masks

Info

Publication number
FR845815A
FR845815A FR845815DA FR845815A FR 845815 A FR845815 A FR 845815A FR 845815D A FR845815D A FR 845815DA FR 845815 A FR845815 A FR 845815A
Authority
FR
France
Prior art keywords
gas protection
protection masks
masks
gas
protection
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
Other languages
French (fr)
Inventor
Arnold Hoff
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.)
LICK ET DES BREVETS PARAMOUNT
Original Assignee
LICK ET DES BREVETS PARAMOUNT
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 LICK ET DES BREVETS PARAMOUNT filed Critical LICK ET DES BREVETS PARAMOUNT
Application granted granted Critical
Publication of FR845815A publication Critical patent/FR845815A/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
    • A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
    • A62B18/10—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
FR845815D 1938-11-08 1938-11-08 Improvements to gas protection masks Expired FR845815A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR845815T 1938-11-08

Publications (1)

Publication Number Publication Date
FR845815A true FR845815A (en) 1939-09-04

Family

ID=9313035

Family Applications (1)

Application Number Title Priority Date Filing Date
FR845815D Expired FR845815A (en) 1938-11-08 1938-11-08 Improvements to gas protection masks

Country Status (1)

Country Link
FR (1) FR845815A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2588516A (en) * 1947-02-21 1952-03-11 Galen M Glidden Gas mask

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2588516A (en) * 1947-02-21 1952-03-11 Galen M Glidden Gas mask

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