CS159746B2 - - Google Patents

Info

Publication number
CS159746B2
CS159746B2 CS4093A CS409368A CS159746B2 CS 159746 B2 CS159746 B2 CS 159746B2 CS 4093 A CS4093 A CS 4093A CS 409368 A CS409368 A CS 409368A CS 159746 B2 CS159746 B2 CS 159746B2
Authority
CS
Czechoslovakia
Application number
CS4093A
Other languages
Czech (cs)
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
Publication of CS159746B2 publication Critical patent/CS159746B2/cs

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H04R1/083—Special constructions of mouthpieces
    • 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
    • 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)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
CS4093A 1967-06-03 1968-06-03 CS159746B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED0053254 1967-06-03

Publications (1)

Publication Number Publication Date
CS159746B2 true CS159746B2 (en) 1975-01-31

Family

ID=7054818

Family Applications (1)

Application Number Title Priority Date Filing Date
CS4093A CS159746B2 (en) 1967-06-03 1968-06-03

Country Status (6)

Country Link
CH (1) CH466052A (en)
CS (1) CS159746B2 (en)
DE (1) DE1708045A1 (en)
FR (1) FR1575820A (en)
GB (1) GB1215218A (en)
SE (1) SE326893B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT381605B (en) * 1984-10-25 1986-11-10 Akg Akustische Kino Geraete RESPIRATORY MASK IN WHICH EXCEPT THE SPEAKING MEMBRANE FOR THE CLOSE COMMUNICATION IS ALSO AN ELECTROACOUSTIC CONVERTER FOR THE INDIRECT VOICE TRANSMISSION FROM THE MASK
DE3510302A1 (en) * 1985-03-22 1986-09-25 Drägerwerk AG, 2400 Lübeck RESPIRATORY MASK FOR OVERPRESSURE RESPIRATORY DEVICES
US4792013A (en) * 1987-09-08 1988-12-20 Boynton Carter R Vocal muffler
NO885009L (en) * 1987-11-13 1989-05-16 Avon Ind Polymers AIR INPUT IN THE RESPIRATOR.
DE4220780C1 (en) * 1992-06-25 1993-09-23 Draegerwerk Ag, 23558 Luebeck, De
FR2740690B1 (en) * 1995-11-03 1998-07-03 Comasec International CONNECTION BLOCK FOR A RESPIRATORY MASK; MASK PROVIDED WITH SUCH A BLOCK; HELMET AND SCAPHANDRE COMPRISING SUCH A MASK
FR2740689B1 (en) 1995-11-03 1998-01-23 Comasec International EYEPIECE FOR A RESPIRATORY PROTECTION MASK, MASK PROVIDED WITH THE EYEPIECE AND HELMET AND SCAPHANDRE PROVIDED WITH THE MASK
DE10159219B4 (en) * 2001-11-27 2005-09-29 Msa Auer Gmbh Respiratory mask for a compressed air breathing apparatus
FR2862883B1 (en) * 2003-11-27 2006-06-16 Philippe Leclere HYGIENE, COMFORT AND / OR PROTECTIVE DEVICE FOR PREVENTING OR LIMITING WATER VAPOR RETURN CONTAINED IN AIR EXHIBITS IN THE VISION FIELD OF AN INDIVIDUAL
CN104225834A (en) * 2014-10-02 2014-12-24 吴建平 Novel dust protection mask
CN104436461A (en) * 2014-12-11 2015-03-25 江苏同康特种活性炭纤维面料有限公司 Filter firefighting self-rescue respirator
DE102015204645B4 (en) 2015-03-13 2020-04-23 Msa Europe Gmbh Respirator
CN109276789A (en) * 2018-11-21 2019-01-29 王晖 A kind of negative pressure tractive respiratory method and its device

Also Published As

Publication number Publication date
SE326893B (en) 1970-08-03
GB1215218A (en) 1970-12-09
FR1575820A (en) 1969-07-25
CH466052A (en) 1968-11-30
DE1708045A1 (en) 1972-01-05

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