US3353702A - Breathing apparatus canister - Google Patents

Breathing apparatus canister Download PDF

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Publication number
US3353702A
US3353702A US494149A US49414965A US3353702A US 3353702 A US3353702 A US 3353702A US 494149 A US494149 A US 494149A US 49414965 A US49414965 A US 49414965A US 3353702 A US3353702 A US 3353702A
Authority
US
United States
Prior art keywords
canister
spring
spaced
sheet
breathing apparatus
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 - Lifetime
Application number
US494149A
Other languages
English (en)
Inventor
Walter G Maiwald
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.)
Auergesellschaft GmbH
Original Assignee
Auergesellschaft GmbH
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 Auergesellschaft GmbH filed Critical Auergesellschaft GmbH
Application granted granted Critical
Publication of US3353702A publication Critical patent/US3353702A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B19/00—Cartridges with absorbing substances for respiratory apparatus

Definitions

  • This invention relates to canisters for breathing appara-tus.
  • Canisters for breathing apparatus frequently become quite hot in use, particularly those for self-contained breathing apparatus wherein the chemical fill reacts with the exhaled breath of the user to generate oxygen and absorb carbon dioxide, e.g., canisters filled with an alkali metal superoxide such as potassium superoxide, K0
  • canisters Prior to this invention, canisters have been provided with an outer wall spaced from the canister wall by a corrugated sheet or the like, which results in an increased canister size, requiring a correspondingly large container to hold the canister.
  • escape apparatus wherein the entire apparatus including canister, breathing bag, breathing tube and mouthpiece are stored in a container when not in use, it is especially desirable to make the container for the apparatus as small and convenient as possible.
  • the canister is provided with a flexible wall, suitably fabric such as canvas, spaced from the canister by a spring plate secured to the canister.
  • the flexible wall spaces the canister from the wearer and provides a chimney effect permitting air to rise along the canister thereby cooling it.
  • the flexible wall is collapsible against the canister by flexing the spring plates against the canister, so that it takes no significant space when stored in a container.
  • FIG. 1 is a top plan view of a preferred canister of this invention in an operative state
  • FIG. 2 is a side plan View of the canister of FIG. 1;
  • FIG. 3 is a top plan view of the canishter of FIG. 1 stored in a container.
  • the canister 4 has an outlet 5 for connection to a breathing tube, not shown, and an outlet 6 for connection to a breathing bag, not shown.
  • Two rectangular spring plates or spring leaves 7 and 8 are fastened at their middle portion to the middle 3,353,702 Patented Nov. 21, 1967 portion of the curved sidewalls of the canister, suitably by solder or adhesive.
  • Tubular fabric 9 surrounds the canister, overlying the spring plates and secured thereto by rivets 10.
  • the portions 11 and 12 of the fabric are of such length that they are held taut and spaced from the canister by the slightly flexed spring plates.
  • the spring plates are pressed against the canister and the portion of the fabric 11 and 12 form folds 14 and 15.
  • a canister having opposed sidewalls, a spring leaf secured to each said sidewall, each said spring leaf having a free end extending in the same direction from the canister and normally spaced therefrom, a sheet of flexible material connected between said free ends, said spring leaves normally maintaining said sheet taut and spaced from said canister.
  • a canister having opposed curved sidewalls, a spring leaf secured at its middle portion to the middle portion of each said sidewall, each said spring leaf having two free ends normally spaced from said canister, and a sheet of flexible material connected between each pair of opposed free ends, said spring leaves normally maintaining said sheet taut and spaced from said canister.
  • a generally oval canister having opposed curved sidewalls and opposed substantially flat sidewalls, a spring leaf secured at its middle portion to the middle portion of each said curved sidewall, each spring leaf having two free ends normally extending beyond and spaced from said flat sidewalls, a tube of flexible material overlying and secured to said spring leaves, the circumference of said tube being larger than the periphery of said canister, said spring leaves normally maintaining said tube taut and spaced from said flat sidewalls.
  • a canister according to claim 3 in which the flexible material is secured to the spring leaves by rivets.

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  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
US494149A 1964-10-16 1965-10-08 Breathing apparatus canister Expired - Lifetime US3353702A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA47348A DE1234133B (de) 1964-10-16 1964-10-16 Atemschutzgeraet mit einer Chemikalpatrone

Publications (1)

Publication Number Publication Date
US3353702A true US3353702A (en) 1967-11-21

Family

ID=6935741

Family Applications (1)

Application Number Title Priority Date Filing Date
US494149A Expired - Lifetime US3353702A (en) 1964-10-16 1965-10-08 Breathing apparatus canister

Country Status (2)

Country Link
US (1) US3353702A (de)
DE (1) DE1234133B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3503628A1 (de) * 1985-02-02 1986-08-14 Auergesellschaft Gmbh, 1000 Berlin Atemschutzgeraet, mit vor der brust zu tragendem atembeutel

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE583693C (de) * 1933-09-08 Draegerwerk Ag Schutzvorrichtung fuer Filter oder Atmungspatronen von Atmungsgeraeten

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
DE1234133B (de) 1967-02-09

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