FR861834A - Valve for protective masks - Google Patents

Valve for protective masks

Info

Publication number
FR861834A
FR861834A FR861834DA FR861834A FR 861834 A FR861834 A FR 861834A FR 861834D A FR861834D A FR 861834DA FR 861834 A FR861834 A FR 861834A
Authority
FR
France
Prior art keywords
valve
protective masks
masks
protective
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
Herbert Heribert
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 filed Critical
Application granted granted Critical
Publication of FR861834A publication Critical patent/FR861834A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F16K15/144—Check valves with flexible valve members the closure elements being fixed along all or a part of their periphery
FR861834D 1939-08-09 1939-08-09 Valve for protective masks Expired FR861834A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR861834T 1939-08-09

Publications (1)

Publication Number Publication Date
FR861834A true FR861834A (en) 1941-02-18

Family

ID=9342421

Family Applications (1)

Application Number Title Priority Date Filing Date
FR861834D Expired FR861834A (en) 1939-08-09 1939-08-09 Valve for protective masks

Country Status (1)

Country Link
FR (1) FR861834A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3419031A (en) * 1965-03-15 1968-12-31 Hesse Breathing valve
FR2599458A1 (en) * 1986-05-27 1987-12-04 Inst Francais Du Petrole Safety valve for a submerged device, especially for the riser equipping an undersea well

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3419031A (en) * 1965-03-15 1968-12-31 Hesse Breathing valve
FR2599458A1 (en) * 1986-05-27 1987-12-04 Inst Francais Du Petrole Safety valve for a submerged device, especially for the riser equipping an undersea well

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