GB426298A - Respiratory apparatus for protection against gases and dust - Google Patents

Respiratory apparatus for protection against gases and dust

Info

Publication number
GB426298A
GB426298A GB18896/34A GB1889634A GB426298A GB 426298 A GB426298 A GB 426298A GB 18896/34 A GB18896/34 A GB 18896/34A GB 1889634 A GB1889634 A GB 1889634A GB 426298 A GB426298 A GB 426298A
Authority
GB
United Kingdom
Prior art keywords
container
conduit
perforated
apertures
mask
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
GB18896/34A
Original Assignee
Georges Francon
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
Priority to FR426298X priority Critical
Application filed by Georges Francon filed Critical Georges Francon
Publication of GB426298A publication Critical patent/GB426298A/en
Expired legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B23/00Filters for breathing-protection purposes
    • A62B23/02Filters for breathing-protection purposes for respirators

Abstract

426,298. Respirators. FRANCON, G., 15, Rue Pierre Termier, St. Etienne, Loire, France. June 26, 1934, No. 18896. Convention date, March 3. [A Specification was laid open to inspection under Sect. 91 of the Acts, Dec. 27, 1934.] [Class 81 (ii)] Respiratory apparatus comprises a container for absorbing and filtering elements directly supported by a mask and having an axial conduit for exhaled air, which conduit supports an exhaust valve. The container 1 is secured to the mask 6 and has air inlets 2. A cover 4 has a central projection 8 formed with air outlets 9 and housing the exhaust valve 13 consisting of two rubber discs attached to each other at spots along their edges and supported by a rubber ring 12 on the axial conduit 11 secured to the base 10. A container 14 has a base 15 secured to conduit 11 and formed with apertures 16 adapted to be closed by a loose rubber inlet valve 17. An absorbent such as charcoal is disposed between a linencovered perforated partition 20 and a perforated member 23 pressed by springs 24 disposed beneath the cover 25. A dust filter 27 of folded felt or paper is clamped at its ends between bases 10 and 15 and covers 4 and 25. Inhaled air passes through the filter 27, through apertures 26 into container 14, and by way of apertures 16 and nozzles 29 to the mask. In a modification, the container 14 is perforated at its periphery and is spaced from the conduit 11 by a perforated tube. Wire gauze covers the perforations.
GB18896/34A 1934-03-03 1934-06-26 Respiratory apparatus for protection against gases and dust Expired GB426298A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR426298X 1934-03-03

Publications (1)

Publication Number Publication Date
GB426298A true GB426298A (en) 1935-04-01

Family

ID=8898952

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18896/34A Expired GB426298A (en) 1934-03-03 1934-06-26 Respiratory apparatus for protection against gases and dust

Country Status (1)

Country Link
GB (1) GB426298A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2537992A (en) * 1939-03-18 1951-01-16 William E Gross Gas mask canister
GB2157970A (en) * 1984-04-27 1985-11-06 Pall Corp Respirator filter
GB2157971A (en) * 1984-04-27 1985-11-06 Pall Corp Respirator filter
US5562092A (en) * 1993-06-14 1996-10-08 George; Eric W. Firefighter's emergency smoke filter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2537992A (en) * 1939-03-18 1951-01-16 William E Gross Gas mask canister
GB2157970A (en) * 1984-04-27 1985-11-06 Pall Corp Respirator filter
GB2157971A (en) * 1984-04-27 1985-11-06 Pall Corp Respirator filter
US5562092A (en) * 1993-06-14 1996-10-08 George; Eric W. Firefighter's emergency smoke filter

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