CA1133652A - Respirators - Google Patents
RespiratorsInfo
- Publication number
- CA1133652A CA1133652A CA317,592A CA317592A CA1133652A CA 1133652 A CA1133652 A CA 1133652A CA 317592 A CA317592 A CA 317592A CA 1133652 A CA1133652 A CA 1133652A
- Authority
- CA
- Canada
- Prior art keywords
- nose
- visor
- arms
- occlusion
- user
- 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
Links
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
- A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B9/00—Component parts for respiratory or breathing apparatus
- A62B9/06—Mouthpieces; Nose-clips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
- B63C11/02—Divers' equipment
- B63C11/12—Diving masks
- B63C2011/125—Diving masks comprising nose-clips, i.e. pinching devices for closing the user's nose, other than rubber blisters integral with flexible mask elements
Landscapes
- Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The invention provides a nose occlusion facility on respirators of the type in which a hood and visor combination envelop? the head of a wearer and carries an oronasal mask for supplying respiratory gas to the wearer. The nose occlusion facility is manually operable and comprises a lever device mounted on the exterior of the visor and associated with arms operative to pinch the wearer's nose in the region of the lobes thereof.
The invention provides a nose occlusion facility on respirators of the type in which a hood and visor combination envelop? the head of a wearer and carries an oronasal mask for supplying respiratory gas to the wearer. The nose occlusion facility is manually operable and comprises a lever device mounted on the exterior of the visor and associated with arms operative to pinch the wearer's nose in the region of the lobes thereof.
Description
RESTRIOIED
~ he present invention relates to headgear to be worn by per~onnel for protection against unpleasant or toxio substanoes in their looal atmosphere~ suoh as radioaobive~ chemioal and/or baoterial eubstanoes. AB it is fundamental to such headgear that safe breathing supplies are maintained~ headgear in ao¢ordance with the invention are hereinafter oalled respirators.
Co-pending UK patent applioation No 20135/76 de~cribes a respirator for protection against undesirable substances in a local atmosphere and whioh oomprises a hood and a visor both made of material impervious to the undecirable substarce~ attaohed one to another in a manner impervious to the undesirable substanoe and adapted to fit and envelop closely the head of a wearer~ means for permitting a wearer to breathe aooeptable air and/or oxYgen~
means for maintaining a gas pressure within the respirator greater than looal environmental pressure~ and seal means for preventing atmosphere outside thereof from reaching the interior of the respirator via the neck Aperture thereof.
~ he primary utility of such respirators is in the proteotion of aircrew~ particularly military airorew~ and it is a feature of that invention~ and indeed of the invention the subjeot of the co-pending Canadian Patent Application 316,108 that such respirators may be used at all altitudes. Now a significant proportion of aircrew find it necessary to unblock their ears during change of altitude by occluding their noses. The present invention provides on a respirator of the type described in British Patent 1,587,121 means whereby a user may occlude his nose.
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.
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1.~3~i65~:
Acoording to the present invention, a respirator of the type comprising a hood and visor combination for olosely enveloping the head of a user and an oronasal mask contained or formed within the hood for delivering breathable gas to the user~s nose and mouth~
has manually operable nose ocoluding means inoluding force transmission means penetrating the hood/visor oom~ination, manipulable handle means assooiated with the transmission means outside the hood/
visor oombination and nose impingement means associated with the transmission means and within the hood/visor oombination, the arrange-ment being suoh that in use manual operation of the handle means oan bring about the impingement on the user~s nose and occlusion thereof by the impingement means.
In a preferred embodiment of the invention the handle means is located on a ~a~al region of the visor, the transmission means oomprises a pair of pivots, and the impingement means oomprises a yoke arranged to swing down onto the sides of the oronasal mask and to pinoh it onto the noser ~he arms of the yoke may carry rollers rotatable thereon to faGilitate a swinging and pinching operation.
In another embodiment of the invention the handle means is located on the respirator in the region of a hood cavity gas supply inlet~ and the nose impingement means comprises a pair of oranks fitted within the mask and the arms whereof are operable in use to swi~el one toward the other and pinch the user~s nose. The tran~-mission means may oomprise an arm/pin linkage or oable~ oord~ or ohain means perhaps with an assooiated spring for urging the impringement means into a non-impingement oonfiguration.
;!3 365Z
In yet snother embodlment of the invention the transmi~sion means comprine a Bowden oable and the handle means a caliper de~ioe.
~ he impingement means are preferably readily adjustable so that a user oan arrange them to oo¢lude his own nose in optimum fashion. For this purpose the impingement yoke or arms may be readily detachable~ bendable~ and/or oarry adjustable pads.
Hhere the transmission means~ or any other part of the impingement apparatus, penetrates the respirator~ seals may be included to prevent entry thereby of undesirable substances.
~ he occlusion means are particularly readily mountable on respirators the vieors whereof are consti~uted by a mem~er forming an exoskeleton for oovering substantially the whole of a user~s face.
A respirator nose ooclusion faoility in acoordanoe with the invention will now be desoribed by way of example with reference to the acoomp~nying drawings~ of whioh:-Figure 1 is a front elevation of a respirator visor oarryinga nose ocoluder~ and Figure 2 iB a side elevation of the respirator shown in Figure 1.
Illustrated in the drawings is a visor 10 to Q respirator of the type described in ~riti~h Patent ~o. 1,587,121 As oan be 6een the visor i~ a substantially rigid member formed to oover su~6tantislly the whole faoe of a wearer. It is transparent at least in the region ahead of the eyes and forms an exoskeleton to the respirQtor as a whole. It oarried~ attaohed at a faoe plate 11 an oro-na~Ql mask 12 formed to cover the nose Qnd mouth of a wearer.
~he mssk 12 is made of a flexible rub~er msterial. Clamping mean~ 13 ~. ' ' ~
~ ~ 3 ~ ~ S ~
also attaohed at the faoe pla-te 11 serve~ in oxobrt with an ~nohorage on say an aircrewman~s helmet~ to urge the mask 12, via the visor 10, to seal against the face of the wearer around the nose and mou-th.
~ he nose ocolusion faoility i8 mounted on the visor 10 in a nasal region thereof. It comprises a pair of pivots 14 penetrating the visor na~al region on a common lateral axis~ a pair of yoke arms 15 mounted on and projecting radially from the pivots 14 inside the visor 10~ and a substant~ally V-shaped handle 16 attaohed to both pivots 14 outside the visor. The arms 15 carry right cylindrical beads 17 rotatable thereon. The pivots 14 are sealed to the visor.
In a non-engaged configuration the arms 15 project toward the top edge of the visor 10 and the handle 16 rests against the top of the face plate 11. This oonfiguration is as illustrated in Figure 1.
To operate the occluder the handle 16 is lifted, rotating the pivot and bringing the arms 15 to bear on the sides of the nose portion of the ma~k 12t ~0 that they pinoh the lobe~ of the wearar~s nose. lhis operative oonfiguration is as illu~trated in Figure 2.
~ he arms 15 are made of a manually pliable metal so that an individual wearer may bend them to maximise the efficiency of their operation with respect to his own nose.
~ he present invention relates to headgear to be worn by per~onnel for protection against unpleasant or toxio substanoes in their looal atmosphere~ suoh as radioaobive~ chemioal and/or baoterial eubstanoes. AB it is fundamental to such headgear that safe breathing supplies are maintained~ headgear in ao¢ordance with the invention are hereinafter oalled respirators.
Co-pending UK patent applioation No 20135/76 de~cribes a respirator for protection against undesirable substances in a local atmosphere and whioh oomprises a hood and a visor both made of material impervious to the undecirable substarce~ attaohed one to another in a manner impervious to the undesirable substanoe and adapted to fit and envelop closely the head of a wearer~ means for permitting a wearer to breathe aooeptable air and/or oxYgen~
means for maintaining a gas pressure within the respirator greater than looal environmental pressure~ and seal means for preventing atmosphere outside thereof from reaching the interior of the respirator via the neck Aperture thereof.
~ he primary utility of such respirators is in the proteotion of aircrew~ particularly military airorew~ and it is a feature of that invention~ and indeed of the invention the subjeot of the co-pending Canadian Patent Application 316,108 that such respirators may be used at all altitudes. Now a significant proportion of aircrew find it necessary to unblock their ears during change of altitude by occluding their noses. The present invention provides on a respirator of the type described in British Patent 1,587,121 means whereby a user may occlude his nose.
~, C~ ~p ,.
. : ~ ~ ' . , .~
.
:
- ~ . .
, . .
1.~3~i65~:
Acoording to the present invention, a respirator of the type comprising a hood and visor combination for olosely enveloping the head of a user and an oronasal mask contained or formed within the hood for delivering breathable gas to the user~s nose and mouth~
has manually operable nose ocoluding means inoluding force transmission means penetrating the hood/visor oom~ination, manipulable handle means assooiated with the transmission means outside the hood/
visor oombination and nose impingement means associated with the transmission means and within the hood/visor oombination, the arrange-ment being suoh that in use manual operation of the handle means oan bring about the impingement on the user~s nose and occlusion thereof by the impingement means.
In a preferred embodiment of the invention the handle means is located on a ~a~al region of the visor, the transmission means oomprises a pair of pivots, and the impingement means oomprises a yoke arranged to swing down onto the sides of the oronasal mask and to pinoh it onto the noser ~he arms of the yoke may carry rollers rotatable thereon to faGilitate a swinging and pinching operation.
In another embodiment of the invention the handle means is located on the respirator in the region of a hood cavity gas supply inlet~ and the nose impingement means comprises a pair of oranks fitted within the mask and the arms whereof are operable in use to swi~el one toward the other and pinch the user~s nose. The tran~-mission means may oomprise an arm/pin linkage or oable~ oord~ or ohain means perhaps with an assooiated spring for urging the impringement means into a non-impingement oonfiguration.
;!3 365Z
In yet snother embodlment of the invention the transmi~sion means comprine a Bowden oable and the handle means a caliper de~ioe.
~ he impingement means are preferably readily adjustable so that a user oan arrange them to oo¢lude his own nose in optimum fashion. For this purpose the impingement yoke or arms may be readily detachable~ bendable~ and/or oarry adjustable pads.
Hhere the transmission means~ or any other part of the impingement apparatus, penetrates the respirator~ seals may be included to prevent entry thereby of undesirable substances.
~ he occlusion means are particularly readily mountable on respirators the vieors whereof are consti~uted by a mem~er forming an exoskeleton for oovering substantially the whole of a user~s face.
A respirator nose ooclusion faoility in acoordanoe with the invention will now be desoribed by way of example with reference to the acoomp~nying drawings~ of whioh:-Figure 1 is a front elevation of a respirator visor oarryinga nose ocoluder~ and Figure 2 iB a side elevation of the respirator shown in Figure 1.
Illustrated in the drawings is a visor 10 to Q respirator of the type described in ~riti~h Patent ~o. 1,587,121 As oan be 6een the visor i~ a substantially rigid member formed to oover su~6tantislly the whole faoe of a wearer. It is transparent at least in the region ahead of the eyes and forms an exoskeleton to the respirQtor as a whole. It oarried~ attaohed at a faoe plate 11 an oro-na~Ql mask 12 formed to cover the nose Qnd mouth of a wearer.
~he mssk 12 is made of a flexible rub~er msterial. Clamping mean~ 13 ~. ' ' ~
~ ~ 3 ~ ~ S ~
also attaohed at the faoe pla-te 11 serve~ in oxobrt with an ~nohorage on say an aircrewman~s helmet~ to urge the mask 12, via the visor 10, to seal against the face of the wearer around the nose and mou-th.
~ he nose ocolusion faoility i8 mounted on the visor 10 in a nasal region thereof. It comprises a pair of pivots 14 penetrating the visor na~al region on a common lateral axis~ a pair of yoke arms 15 mounted on and projecting radially from the pivots 14 inside the visor 10~ and a substant~ally V-shaped handle 16 attaohed to both pivots 14 outside the visor. The arms 15 carry right cylindrical beads 17 rotatable thereon. The pivots 14 are sealed to the visor.
In a non-engaged configuration the arms 15 project toward the top edge of the visor 10 and the handle 16 rests against the top of the face plate 11. This oonfiguration is as illustrated in Figure 1.
To operate the occluder the handle 16 is lifted, rotating the pivot and bringing the arms 15 to bear on the sides of the nose portion of the ma~k 12t ~0 that they pinoh the lobe~ of the wearar~s nose. lhis operative oonfiguration is as illu~trated in Figure 2.
~ he arms 15 are made of a manually pliable metal so that an individual wearer may bend them to maximise the efficiency of their operation with respect to his own nose.
Claims (10)
1. On a respirator of the type comprising a hood and visor combination for closely enveloping the head of a user and an oro-nasal mask carried there within for delivering respiratory gas to the user's nose and mouth, manually operable nose occlusion means comprising, force transmission means penetrating said hood and visor combination, manipulable handle means associated with said force transmission means exterior to said combination, and nose impingement means associated with said force transmission means within said combination.
2. Nose occlusion means as claimed in claim 1 and wherein said handle means are mounted on a nasal region of said visor.
3. Nose occlusion means as claimed in claim 1 and wherein said force transmission means comprises pivot means.
4. Nose occlusion means as claimed in claim 3 and wherein said pivot means are sealed to said visor.
5. Nose occlusion means as claimed in claim 2 and wherein said force transmission means comprises a pair of pivots penetrating said visor along a common lateral axis in said nasal region.
6. Nose occlusion means as claimed in claim 1 and wherein said nose impingment means comprises a pair of arms operative to bear on the region of the nose lobes of a user.
7. Nose occlusion means as claimed in claim 6 and wherein said arms are operative to bear on the outside of said oro-nasal respirator mask in the nasal region.
8. Nose occlusion means as claimed in claim 6 and wherein said arms carry rollers rotatable thereon.
9. Nose occlusion means as claimed in claim 1 and wherein said nose impingement means are adjustable.
10. On a respirator of the type comprising a hood and visor combination for closely enveloping the head of a user and an oro-nasal mask carried therewithin for delivering respiratory gas to the user's nose and mouth, manually operable nose occlusion means comprising, a pair of pivots penetrating said visor along a common lateral axis in a nasal region thereof, a pair of nose impingement arms attached one to each of said pivots within said visor and operative to move from a non-impingement configuration to an impingement configuration wherein said arms pinch the outside of said oro-nasal respirator mask approximate the nose lobes of a wearer, rollers rotatable on said arms, and handle means attached to said pivots outside said visor, said arms being adjustable so that a user can arrange them for the occlusion of his own nose in optimum fashion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5137877 | 1977-12-09 | ||
| GB51378/77 | 1977-12-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1133652A true CA1133652A (en) | 1982-10-19 |
Family
ID=10459775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA317,592A Expired CA1133652A (en) | 1977-12-09 | 1978-12-08 | Respirators |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | USRE31424E (en) |
| BE (1) | BE872609A (en) |
| CA (1) | CA1133652A (en) |
| DE (1) | DE2853213A1 (en) |
| FR (1) | FR2463626A1 (en) |
| IT (1) | IT1174253B (en) |
| NL (1) | NL185001C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3437310C1 (en) * | 1984-10-11 | 1985-07-18 | Drägerwerk AG, 2400 Lübeck | Protective hood with locking elements for the nostrils |
| FR2715572B1 (en) * | 1994-02-02 | 1996-04-26 | Intertechnique Sa | Head protection equipment with respiratory mask and optical screen. |
| NO326715B1 (en) * | 1998-07-13 | 2009-02-02 | Rudolf Brekken | A system for supplying liquid to a diver using a diving helmet |
| US6468222B1 (en) | 1999-08-02 | 2002-10-22 | Healthetech, Inc. | Metabolic calorimeter employing respiratory gas analysis |
| DE19954517C2 (en) * | 1999-11-12 | 2002-01-31 | Map Gmbh | Breathing mask and method of making the same |
| US20030105407A1 (en) * | 2001-11-30 | 2003-06-05 | Pearce, Edwin M. | Disposable flow tube for respiratory gas analysis |
| GB0210417D0 (en) * | 2002-05-08 | 2002-06-12 | Qinetiq Ltd | Respirator assembly |
| USD478660S1 (en) | 2002-07-01 | 2003-08-19 | Healthetech, Inc. | Disposable mask with sanitation insert for a respiratory analyzer |
| FR2843699B1 (en) * | 2002-08-23 | 2004-10-29 | Intertechnique Sa | INDIVIDUAL DEVICE FOR SUPPLYING RESPIRATORY GAS |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE80919C (en) * | ||||
| GB190352A (en) * | 1921-12-05 | 1922-12-21 | William Orr | Improvements in nose-clips for use with respiratory apparatus |
| US1978994A (en) * | 1932-05-28 | 1934-10-30 | Domenic A Fortunato | Protective helmet |
| DE754529C (en) * | 1939-09-20 | 1954-04-29 | Draegerwerk Ag | Diving mask |
| DE891655C (en) * | 1951-06-19 | 1953-10-01 | Draegerwerk Ag | Nose clip for breathing apparatus |
| US3027561A (en) * | 1960-03-18 | 1962-04-03 | Voit Rubber Corp | Face plate with nose pincers |
| GB1144317A (en) * | 1965-09-09 | 1969-03-05 | Ml Aviation Co Ltd | Improvements relating to airmens' helmets |
| FR1589791A (en) * | 1967-10-27 | 1970-04-06 | ||
| US4077068A (en) * | 1976-08-09 | 1978-03-07 | Anderson Richard E | Underwater diving mask |
| US4090511A (en) * | 1977-03-23 | 1978-05-23 | Mine Safety Appliances Company | Mouthpiece valve for escape breathing apparatus |
-
1978
- 1978-12-05 IT IT7869779A patent/IT1174253B/en active
- 1978-12-07 BE BE0/192203A patent/BE872609A/en not_active IP Right Cessation
- 1978-12-08 FR FR7834623A patent/FR2463626A1/en active Granted
- 1978-12-08 NL NLAANVRAGE7811985,A patent/NL185001C/en not_active IP Right Cessation
- 1978-12-08 CA CA317,592A patent/CA1133652A/en not_active Expired
- 1978-12-09 DE DE19782853213 patent/DE2853213A1/en active Granted
-
1982
- 1982-10-27 US US06/437,766 patent/USRE31424E/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE2853213C2 (en) | 1989-09-07 |
| USRE31424E (en) | 1983-10-25 |
| FR2463626A1 (en) | 1981-02-27 |
| DE2853213A1 (en) | 1981-06-11 |
| FR2463626B1 (en) | 1984-10-19 |
| IT7869779A0 (en) | 1978-12-05 |
| IT1174253B (en) | 1987-07-01 |
| NL185001B (en) | 1989-08-01 |
| NL7811985A (en) | 1980-11-28 |
| BE872609A (en) | 1982-01-18 |
| NL185001C (en) | 1990-01-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |