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Collapsible face mask

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Publication number
US3736928A
US3736928A US3736928DA US3736928A US 3736928 A US3736928 A US 3736928A US 3736928D A US3736928D A US 3736928DA US 3736928 A US3736928 A US 3736928A
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Prior art keywords
mask
outer
walls
inner
face
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Expired - Lifetime
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E Arne
B Andersson
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NILS O W RUNDBLAD
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NILS O W RUNDBLAD
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    • AHUMAN NECESSITIES
    • A41WEARING APPAREL
    • A41DOUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00Professional, industrial, or sporting protective garments, e.g. garments affording protection against blows or punches, surgeon's gowns
    • A41D13/05Professional, industrial, or sporting protective garments, e.g. garments affording protection against blows or punches, surgeon's gowns protecting only a particular body part
    • A41D13/11Protective face masks, e.g. for surgical use, or for use in foul atmospheres
    • A41D13/1107Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape
    • A41D13/113Protective face masks, e.g. for surgical use, or for use in foul atmospheres characterised by their shape with a vertical fold or weld

Abstract

The invention is concerned with a hygienic face mask formed from a single sheet of air-filtering fibrous sheet material so folded as to provide a free space between outer and inner walls of the mask. Air flow openings are or may be provided at the rear end portion of the outer walls. The mask is held snugly against the nose and adjacent portion of the face of the wearer by means of a stiff but deformable clip member inserted in slits in the top of the mask.

Description

United States Patent [191 Andersson et al.

1 1 June 5, 1973 154] COLLAPSIBLE FACE MASK 175] lnventorszErik Arne Andersson; Bror Axwl Erling Andersson, both of Stockholm,Sweden [73] Assignee: Nils O. W. Rundblad, Markaryd,

Sweden 221 Filed: Mar. 15, 1971 [21] Appl.No.: 124,259

[52] US. Cl ..l28/146.2, 128/139 [51] Int. Cl. ..A62b 23/02 [58] Field of Search ..128/146.2, 146.6,

[56] References Cited UNITED STATES PATENTS 3,500,825 3/1970 Andersson ..128/146.2 X

FOREIGN PATENTS OR APPLICATIONS 62,257 3/1944 Denmark ..l28/146.2 4,789 12/1912 GreatBritain ..128/146.6

Primary ExaminerWilliam E. Kamm Assistant Examiner-G. F Dunne Attorney-Pierce, Sche'ffler & Parker 57 ABSTRACT The invention is concerned with a hygienic face mask formed from a single sheet of air-filtering fibrous sheet material so folded as to provide a free space between outer and inner walls of the mask. Air flow openings are or may be provided at the rear end portion of the outer walls. The mask is held snugly against the nose and adjacent portion of the face of the wearer by means of a stiff but deformable clip member inserted in slits in the top of the mask.

1 Claim, 4 Drawing Figures COLLAPSIBLE FACE MASK The present invention relates to face masks, and has as its object the provision of a collapsible hygienic face mask which is suitable for mass production, at a low price, but which is, nevertheless, effective and comfortable to use. Due to its low price, the mask may be disposed of'after it has been used.

The mask according to the invention is made of a foldable, air-filtering sheet of permeable fibrous material.

A suitable embodiment of the invention is shown by way of example in the accompanying drawing, in which FIG. 1 is a plan view of the mask with its two identical halves in superimposed position, that is, lying flat on each other;

FIG. 2 is a cross-section along line 22 in FIG. 1;

FIG. 3 is a diagrammatic perspective view of the mask when the halves of the mask are spread apart and the mask is cut along the line 22 in FIG. 1; and

FIG. 4 is a diagrammatic view of the mask when mounted on the face of a person.

The mask is made of a single piece ofa foldable, nonwoven, air-filtering fibrous sheet material which has been cut from a continuous web of such material, and which has been folded to a generally W-shaped crosssection as will be understood from FIG. 2.

The mask comprises two identical double-walled halves each of which has outer walls 1 and 2 respectively and inner walls 3 and 4 respectively. The forward edge 5 of the mask, which is also the junction of the forward edges of the outer walls 1, 2, is concavely curved, whereas the rear edge 6 of the mask is straight.

From the ends 7, 8 of the curved forward edge 5 to a middle portion located between two points 9 and 10, the outer and inner walls 1, 2 and 3, 4, respectively are united along lines 11 and 12. Between the points 10 and 11 the front edges of the inner walls are joined to-' gether by a straight fold 13 which is spaced from the uniting line 14 joining the edges of the outer walls between the points 9 and 10. Thus, a free space 15 roughly approaching in shape the segment of a sphere is formed between the outer and inner walls in the mouth region of the mask.

The rear ends of the inner and outer walls are joined by folds l6 and 17 respectively, and here an elastic attachment string 18 is passed between the walls to enable the mask to be attached to the head of a wearer.

The exhalation and inhalation air will pass through the two layers formed by the outer and inner walls as indicated by the arrows 19 in FIG. 3. However, in the example shown, part of the air will pass through the space 15 and the tunnel passage formed between the outer and inner walls 1, 3 and 2, 4 to air flow openings 20, 21 in the rear end portions of the outer walls as indicated by the arrows 22. These openings may be provided when it is desired to facilitate breathing.

A deformable metal strip 23 is secured at the upper end of the forward edge 5 and has its legs inserted into slits 24, 24 in the outer walls. When the mask is mounted on the face of a person and strip 23 is pressed tightly against the nose, the strip will retain its shape and will hold the mask tightly against the nose and surrounding region of the face. Thus escape of air at the upper edges of the mask may be substantially prevented.

We claim:

1. A collapsible hygienic face mask cut from a W- folded web of an air-filtering fibrous sheet material, comprising two identical double-walled halves which in their superimposed position before use have a common forward convexly curved edge (5) and two coinciding rearward straight edges (16, 17) corresponding to the folded side edges of the W-folded web, the inner (3, 4) wall portions and outer (l, 2) wall portions of the two halves of the mask being joined together along the common forward curved edge (5) from its ends to the ends (9, 10) of a middle portion thereof located in front of the mouth region of the mask, where the forward edge of the outer wall, constituted by the joined outer wall portions, in said middle portion is spaced from a straight middle portion (13) of the forward edges of the inner wall portions which are joined together by a fold (13) corresponding to the middle fold of the W-folded web, whereby a free space (15) at the mouth region will be formed between the outer and inner walls when the mask is adjusted to the face of a wearer, the inner wall of the mask being unbroken, the two outer wall portions being provided at their rear end portions with openings (20, 21) for exhaled air having passed through the inner walls to said free space between said inner and outer walls.

Claims (1)

1. A collapsible hygienic face mask cut from a W-folded web of an air-filtering fibrous sheet material, comprising two identical double-walled halves which in their superimposed position before use have a common forward convexly curved edge (5) and two coinciding rearward straight edges (16, 17) corresponding to the folded side edges of the W-folded web, the inner (3, 4) wall portions and outer (1, 2) wall portions of the two halves of the mask being joined together along the common forward curved edge (5) from its ends to the ends (9, 10) of a middle portion thereof located in front of the mouth region of the mask, where the forward edge of the outer wall, constituted by the joined outer wall portions, in said middle portion is spaced from a straight middle portion (13) of the forward edges of the inner wall portions which are joined together by a fold (13) corresponding to the middle fold of the W-folded web, whereby a free space (15) at the mouth region will be formed between the outer and inner walls when the mask is adjusted to the face of a wearer, the inner wall of the mask being unbroken, the two outer wall portions being provided at their rear end portions with openings (20, 21) for exhaled air having passed through the inner walls to said free space between said inner and outer walls.
US3736928A 1971-03-15 1971-03-15 Collapsible face mask Expired - Lifetime US3736928A (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4323063A (en) * 1980-04-21 1982-04-06 Fisichella Jeanne M Medical face mask
US4966168A (en) * 1989-01-03 1990-10-30 Glassman Jacob A Ophthalmic drape with built-in mini-mask
GB2254257A (en) * 1991-03-12 1992-10-07 Harry Cole Air filtering face mask
US5704349A (en) * 1987-10-02 1998-01-06 Tecnol Medical Products, Inc. Surgical face mask with darkened glare-reducing strip and visor
US6070587A (en) * 1997-10-01 2000-06-06 3M Innovative Properties Company One-piece opthalmic drape and methods
US6105579A (en) * 1997-10-01 2000-08-22 3M Innovative Properties Company Ophthalmic drape with tear line and method
US6286511B1 (en) 1997-10-01 2001-09-11 3M Innovative Properties Company Ophthalmic drape with tear line and method
US6394090B1 (en) 1999-02-17 2002-05-28 3M Innovative Properties Company Flat-folded personal respiratory protection devices and processes for preparing same
US6868852B2 (en) * 2001-04-02 2005-03-22 Paul Gaschke Cold weather breathing apparatus
US20070215153A1 (en) * 2006-03-09 2007-09-20 Bruce Rogers Portable oxygen delivery apparatus
US20080011303A1 (en) * 2006-07-17 2008-01-17 3M Innovative Properties Company Flat-fold respirator with monocomponent filtration/stiffening monolayer
US20090315224A1 (en) * 2006-07-31 2009-12-24 Angadjivand Seyed A Method for making shaped filtration articles
US20100319105A1 (en) * 2009-06-23 2010-12-23 Cody Fairbanks Facial Spacer Device and Associated Methods

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191204789A (en) * 1912-02-26 1912-12-05 John Ebenezer Bousfield Improvements in Respirators.
US3500825A (en) * 1965-12-30 1970-03-17 Andersson A E Bror Mouth cover

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191204789A (en) * 1912-02-26 1912-12-05 John Ebenezer Bousfield Improvements in Respirators.
US3500825A (en) * 1965-12-30 1970-03-17 Andersson A E Bror Mouth cover

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4323063A (en) * 1980-04-21 1982-04-06 Fisichella Jeanne M Medical face mask
US5704349A (en) * 1987-10-02 1998-01-06 Tecnol Medical Products, Inc. Surgical face mask with darkened glare-reducing strip and visor
US4966168A (en) * 1989-01-03 1990-10-30 Glassman Jacob A Ophthalmic drape with built-in mini-mask
GB2254257A (en) * 1991-03-12 1992-10-07 Harry Cole Air filtering face mask
GB2254257B (en) * 1991-03-12 1995-09-06 Harry Cole A respiratory protection device
US6070587A (en) * 1997-10-01 2000-06-06 3M Innovative Properties Company One-piece opthalmic drape and methods
US6105579A (en) * 1997-10-01 2000-08-22 3M Innovative Properties Company Ophthalmic drape with tear line and method
US6286511B1 (en) 1997-10-01 2001-09-11 3M Innovative Properties Company Ophthalmic drape with tear line and method
US20020108615A1 (en) * 1997-10-01 2002-08-15 3M Innovative Properties Company Ophthalmic drape with tear line and method
US6405730B2 (en) 1997-10-01 2002-06-18 3M Innovative Properties Company Ophthalmic drape with tear line and method
US6394090B1 (en) 1999-02-17 2002-05-28 3M Innovative Properties Company Flat-folded personal respiratory protection devices and processes for preparing same
US6868852B2 (en) * 2001-04-02 2005-03-22 Paul Gaschke Cold weather breathing apparatus
US20070215153A1 (en) * 2006-03-09 2007-09-20 Bruce Rogers Portable oxygen delivery apparatus
US7832395B2 (en) * 2006-03-09 2010-11-16 Oxygen Plus, Inc. Portable oxygen delivery apparatus
US20080011303A1 (en) * 2006-07-17 2008-01-17 3M Innovative Properties Company Flat-fold respirator with monocomponent filtration/stiffening monolayer
US9770058B2 (en) 2006-07-17 2017-09-26 3M Innovative Properties Company Flat-fold respirator with monocomponent filtration/stiffening monolayer
US20090315224A1 (en) * 2006-07-31 2009-12-24 Angadjivand Seyed A Method for making shaped filtration articles
US8029723B2 (en) 2006-07-31 2011-10-04 3M Innovative Properties Company Method for making shaped filtration articles
US20100319105A1 (en) * 2009-06-23 2010-12-23 Cody Fairbanks Facial Spacer Device and Associated Methods

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