US2011733A - Face-conforming respirator mask - Google Patents

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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
  • A62B18/02—Masks
  • A62B18/025—Halfmasks

Definitions

• Myinvention relatestorespirators havingfaceviding a large depending loop I substantially fitting masks provided with means for insuring conformed to the enlarged mouth-enclosing pora filtered-air supply to the user; and it consists tion 22 of the mask, so that the opposed ends particularly in improved clipping means for con- II, II, may be spread more or less as required 5 forming the mask to the face of the wearer so without materially varying the nose-engaging 5 as to most satisfactorily secure the same with pressure exerted thereby and without danger of reduction of the dead-air space in the mask and overstraining the loop material so as to effect without interference with nasal breathing: The any change in its normal shape.
• mouth-enclosing portion 22 of the mask prefer- The type of respirator to which my invention ably in loosely retained exterior position thereparticularly relates, and the general purpose of on as indicated, so as to permit of only a limited my present improvement, is indicated in prior spreading of said mouth-enclosing portion when Patent No. 1,317,947 issued October 7, 1919 and the mask is applied tothe face. 15 later assigned to the predecessor of my present I The en agement of the opposed end portions assignee.
• I I, ll of the loop with the collapsible nose-en- .1 is aside elevation indicating a e pirator closing portion of the mask may be convemask of well known construction having my imniently effected by forming the nose-enclosing v 0 proved clip device app i d thereto in p e e wall with clip-engaging means, as indicated by 20 1119-1111812, the molded projections 2
• these engaged ends portion of e filter-Supporting mouth-enclosing I I, I l are bent outwardly so as to extend beyond por on broken aw o as to fully Show one d the projections 2
• collapsing of the 3 is p e P p v View Of my nasal passages is avoided; and a moderate and improved device indicating the formation thereof umform pressure is insured adapted to satiss e e n r Sp fi y describedfactorily secure the properly collapsed mask.
• a spring wire having its ends en- 5Q 1001) besubstantially spread bl may be gaged in said clip-engaging means and a con-' variously requ Without materially va y the necting loop depending around and engaging gripping pressure exerted in actual use upon the opposite sides of said mouth-enclosing portion.
• collapsible nose-enclosing portion 20 0f the m sk. 2.
• the combination with a respirator mask .55 This is most satisfactorily p ished by p oformed of flexible molded material and compris- 55.
• an air-connecting mouth-enclosing portion and a laterally collapsible nose-enclosing wall having clip-engaging means, of I means adapted .to resist spread of said mouth-enclosing portion and conformingly collapse said nose-enclosing wall comprising, a loop of spring wire depending around the outer wall at a distance spaced from the face-contacting edge of the latter and engaging opposite sides of said mouth enclosing portion, said wire loop having angularly bent clip-engaging ends extending substantially crosswise of said nose wall so as to reversely press the latter against the side swellings of an enclosed nasal bone.
• a respirator mask formed of flexible molded material and comprising an air-connecting mouth-enclosing portion, and a laterally collapsible,nose-enclosing wall having interior clip-engaging means, of means adapted to resist spread of said mouth-enclosing portion and conformingly collapse said noseenclosing wall comprising, a loop of spring wire depending around the inner wall at a. distance spaced from the face-contacting edge of the latter and engaging opposite inner sides of said mouth-enclosing portion, said wire loop having angularly-bent clip-engaging ends extending substantially cross-wise of ,said nose wall so as to reversely press the latter against the side swellings of an enclosed nasal bone.

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• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Zoology (AREA)
• Pulmonology (AREA)
• General Health & Medical Sciences (AREA)
• Business, Economics & Management (AREA)
• Emergency Management (AREA)
• Respiratory Apparatuses And Protective Means (AREA)

Description

Priority Applications (1)

Applications Claiming Priority (1)

Publications (1)

Family

ID=24994079

Family Applications (1)

Country Status (1)

Cited By (16)

• 1934
  • 1934-09-20 US US744813A patent/US2011733A/en not_active Expired - Lifetime

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