FR1245955A - Combined exhalation valve and voice membrane - Google Patents

Combined exhalation valve and voice membrane

Info

Publication number
FR1245955A
FR1245955A FR816186A FR816186A FR1245955A FR 1245955 A FR1245955 A FR 1245955A FR 816186 A FR816186 A FR 816186A FR 816186 A FR816186 A FR 816186A FR 1245955 A FR1245955 A FR 1245955A
Authority
FR
France
Prior art keywords
exhalation valve
voice membrane
combined
combined exhalation
voice
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
FR816186A
Other languages
French (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.)
MSA Safety Inc
Original Assignee
Mine Safety Appliances Co
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 Mine Safety Appliances Co filed Critical Mine Safety Appliances Co
Application granted granted Critical
Publication of FR1245955A publication Critical patent/FR1245955A/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

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)
FR816186A 1959-01-21 1960-01-20 Combined exhalation valve and voice membrane Expired FR1245955A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US788076A US3035574A (en) 1959-01-21 1959-01-21 Combination exhalation valve and speaking diaphragm

Publications (1)

Publication Number Publication Date
FR1245955A true FR1245955A (en) 1960-11-10

Family

ID=25143381

Family Applications (1)

Application Number Title Priority Date Filing Date
FR816186A Expired FR1245955A (en) 1959-01-21 1960-01-20 Combined exhalation valve and voice membrane

Country Status (2)

Country Link
US (1) US3035574A (en)
FR (1) FR1245955A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3228409A (en) * 1962-03-19 1966-01-11 Godel Edouard Paul Victo Raoul Compensated action non-return valve, more particularly for respiratory mask

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124130A (en) * 1964-03-10 Respirator with speaking diaphragm
US3109425A (en) * 1960-03-04 1963-11-05 Electric Storage Battery Co Respirator speaking diaphragm and exhalation valve unit
US3291127A (en) * 1963-10-30 1966-12-13 Lee R Eimer Audio exhalation valve for anesthetic nose mask
US3348537A (en) * 1965-03-01 1967-10-24 Mine Safety Appliances Co Combination breathing valve and speaking diaphragm unit
GB8428640D0 (en) * 1984-11-13 1984-12-19 Avon Ind Polymers Valve for respirator
CA1311423C (en) * 1988-02-10 1992-12-15 Ronald E. Davis Moulded speech transmitter
US5385141A (en) * 1992-04-16 1995-01-31 Siebe North, Inc. Speech diaphragm and exhalation valve

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB150232A (en) * 1920-02-10 1920-09-02 Cecil Rosling Improvements in breathing apparatus
US1730227A (en) * 1923-03-31 1929-10-01 Lewis M Mcbride Gas mask
GB572888A (en) * 1942-03-18 1945-10-29 Guy R Fountain Ltd Improvements in or relating to respirators
GB566088A (en) * 1943-03-30 1944-12-13 John Ambrose Sadd Improvements in respirators
US2684066A (en) * 1951-11-13 1954-07-20 Acme Prot Equipment Company Pressure regulator structure for pressure-type gas masks
DE1011732B (en) * 1955-07-13 1957-07-04 Draegerwerk Ag Valve made of elastic material for breathing apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3228409A (en) * 1962-03-19 1966-01-11 Godel Edouard Paul Victo Raoul Compensated action non-return valve, more particularly for respiratory mask

Also Published As

Publication number Publication date
US3035574A (en) 1962-05-22

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