AT141373B - Smoke and mist filters. - Google Patents

Smoke and mist filters.

Info

Publication number
AT141373B
AT141373B AT141373DA AT141373B AT 141373 B AT141373 B AT 141373B AT 141373D A AT141373D A AT 141373DA AT 141373 B AT141373 B AT 141373B
Authority
AT
Austria
Prior art keywords
smoke
filters
mist
mist filters
mist filter
Prior art date
Application number
Other languages
German (de)
Inventor
Otto Heinrich Dr Draeger
Original Assignee
Otto Heinrich Dr Draeger
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 Otto Heinrich Dr Draeger filed Critical Otto Heinrich Dr Draeger
Application granted granted Critical
Publication of AT141373B publication Critical patent/AT141373B/en

Links

Classifications

    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B23/00Filters for breathing-protection purposes

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Filtering Materials (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



    Rauch-und Nebelfilter.   



   Durch das Patent   Nr.     115845   ist ein Verfahren zur Herstellung eines   Nebelfilterstoffes geschützt,   welches im wesentlichen in einer weitgehenden   Zerfaserung bestimmter Stoffe,   wie Zellstoff, Watte, Filz, Asbestwolle, besteht. Es hat sich nun durch Versuche herausgestellt, dass die so erhaltenen Nebelfilterstoffe den bisher bekannten überlegen sind, da sie auch gegen giftige Schwebstoffe wirksam sind. und dass diese Überlegenheit so weit geht, um wirksame Schichten dieses Stoffes selbst in den bekannten Kleinfiltern, also z.

   B. solchen mit Durchmessern von   90-110     mm,   unterzubringen, weil man die Höhe dieser Schicht infolge der hohen Filtrationswirkung des Stoffes so weit beschränken kann, dass sie die Beschickung der Kleinfilter mit den   üblichen   gasbindenden oder gasabsorbierenden Stoffen nicht beein-   trächtigt   und ihren Atmungswiderstand nicht unerträglich erhöht. Dadurch wird ein wesentlicher und lange erstrebter Vorteil erreicht.

   Man ist für   Nebelfilterzwecke   jetzt nicht mehr auf die   Filterbüchsen   angewiesen, deren Verwendung nur unter Einschaltung des lästigen Atmungssehlauches mit allen seinen Nachteilen   möglich   ist, sondern man kann nunmehr Kleinnebelfilter herstellen, die wie die sonstigen Kleinfilter unmittelbar an der Maske befestigt werden können und so das Tragen des   Atmungsselhlauehes   überflüssig machen. Die Höhe der Nebelfilterschieht gemäss des Stammpatentes in   Kleinfiltern.   also 
 EMI1.1 
 bierenden Stoffen und d ein über der Nebelfilterschicht liegendes Zwischensieb. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



    Smoke and mist filters.



   Patent No. 115845 protects a process for the production of a mist filter material which essentially consists in the extensive defibration of certain materials such as cellulose, wadding, felt, asbestos wool. It has now been found through tests that the mist filter materials obtained in this way are superior to those previously known, since they are also effective against toxic suspended matter. and that this superiority goes so far as to provide effective layers of this substance even in the well-known small filters, e.g.

   B. those with a diameter of 90-110 mm, because you can limit the height of this layer due to the high filtration effect of the substance so that it does not affect the loading of the small filters with the usual gas-binding or gas-absorbing substances and their breathing resistance not unbearably increased. This achieves an essential and long-sought advantage.

   One is no longer dependent on the filter canisters for mist filter purposes, which can only be used with the involvement of the annoying breathing tube with all its disadvantages, but one can now produce small mist filters which, like the other small filters, can be attached directly to the mask and so they can be worn Make the breathing arm superfluous. According to the parent patent, the height of the mist filter is in small filters. so
 EMI1.1
 bating substances and d an intermediate sieve overlying the mist filter layer.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-ANSPRUCH : EMI1.2 gasbindenden Schicht an der Lufteintrittsseite eine nicht über 30 mm Höhe hinausgehende Schicht (b) eines Nebelfilters nach Patent Nr. 115845 angeordnet ist. EMI1.3 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: EMI1.2 gas-binding layer on the air inlet side a layer (b) of a mist filter according to patent no. 115845 which does not exceed 30 mm in height is arranged. EMI1.3 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT141373D 1928-01-30 1932-01-22 Smoke and mist filters. AT141373B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE115845X 1928-01-30
DE377542X 1931-01-26

Publications (1)

Publication Number Publication Date
AT141373B true AT141373B (en) 1935-04-10

Family

ID=34066181

Family Applications (3)

Application Number Title Priority Date Filing Date
AT115845D AT115845B (en) 1928-01-30 1928-12-15 Filters, in particular breathing filters for smoke and mist, and processes for their manufacture.
AT141373D AT141373B (en) 1928-01-30 1932-01-22 Smoke and mist filters.
AT136524D AT136524B (en) 1928-01-30 1932-01-29 Gas mask.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
AT115845D AT115845B (en) 1928-01-30 1928-12-15 Filters, in particular breathing filters for smoke and mist, and processes for their manufacture.

Family Applications After (1)

Application Number Title Priority Date Filing Date
AT136524D AT136524B (en) 1928-01-30 1932-01-29 Gas mask.

Country Status (2)

Country Link
AT (3) AT115845B (en)
GB (1) GB377542A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128897A (en) * 1982-11-01 1984-05-10 Racal Safety Ltd Powered air supply unit for respirators

Also Published As

Publication number Publication date
GB377542A (en) 1932-07-28
AT115845B (en) 1930-01-10
AT136524B (en) 1934-02-10

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