WO2002056965A1 - Modular respirators and a method of conversion thereof - Google Patents
Modular respirators and a method of conversion thereof Download PDFInfo
- Publication number
- WO2002056965A1 WO2002056965A1 PCT/US2001/018144 US0118144W WO02056965A1 WO 2002056965 A1 WO2002056965 A1 WO 2002056965A1 US 0118144 W US0118144 W US 0118144W WO 02056965 A1 WO02056965 A1 WO 02056965A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lens
- respirator
- hood
- seal
- mask
- Prior art date
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
- 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
- A62B18/084—Means for fastening gas-masks to heads or helmets
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B17/00—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
- A62B17/04—Hoods
-
- 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
- A62B18/082—Assembling eyepieces, lenses or vision-correction means in or on gas-masks
Definitions
- the present invention relates to respirators, and specifically to a modular respirator system and method of converting components between respirators.
- Respirators for providing a breathable air supply to a wearer are well known and have been used for many years.
- respirators include masks used by firefighters, in the military, and in industrial applications where the air supply may be contaminated.
- full face shields also protect the eyes and face from harmful or irritating gases and other substances.
- Such masks typically include a transparent face shield and may also include mounts for accepting detachable and replaceable filter elements or connectors to air supplies.
- respirators there are a number of specific types of respirators in common use, including filtering facepieces, half face masks or half facepiece respirators, full facepiece respirators, hood respirators, or hood respirators combined with a facepiece.
- Each respirator is of a fixed, single design, lacking modularity and interchangeability.
- Hood respirator examples are described in U.S. Patent No. 4,619,254 to Moretti, et al., which discloses a protective respirator hood for use with half or full-face respirator masks as well as for use as a supplied air respirator hood. A portion of the flexible hood material provided is integrated with a respirator that is then sealed over the nose and the mouth of the user.
- FIG. 1 A block diagram illustrating an exemplary computing environment in accordance with the present disclosure.
- FIG. 1 A block diagram illustrating an exemplary computing environment in accordance with the present disclosure.
- FIG. 1 A block diagram illustrating an exemplary computing environment in accordance with the present disclosure.
- FIG. 1 A block diagram illustrating an exemplary computing environment in accordance with the present disclosure.
- FIG. 1 A block diagram illustrating an exemplary computing environment in accordance with the present disclosure.
- FIG. 1 A block diagram illustrating an exemplary computing environment in accordance with the present disclosure.
- FIG. 1 A block diagram illustrating an exemplary computing environment in accordance with the present disclosure.
- FIG. 1 A block diagram illustrating an exemplary computing environment in accordance with the present disclosure.
- FIG. 1 A block diagram illustrating an exemplary computing environment in accordance with the present disclosure.
- FIG. 1 A block diagram illustrating an exemplary computing environment in accordance with the present disclosure.
- FIG. 1 A block diagram illustrating an exemplary computing environment in accordance with the present disclosure.
- the lens panel itself is integrated with the hood and has no modularity Minnesota Mining and Manufacturing Company, St Paul, Minnesota, makes a variety of respirator assemblies (such as the 3M 6000 Series Respirators) that use disposable and interchangeable filters and cartridges for different kinds of environments
- respirator assemblies such as the 3M 6000 Series Respirators
- these respirators have no provision for interchangeable face shields
- some degree of component interchange may be achievable in each of the aforementioned protective respirators, such variations are limited to choosing from a range of selectable breathing elements, disposable lens shielding, and various forms of air supply
- a respirator design that can be configured as a respirator hood, a full-face respirator, or any other similar or equivalent respirators using modular components, particularly an interchangeable face shield component
- a respirator of a first configuration can be converted into a respirator of a second configuration by removing an interchangeable lens component from the first configuration and mounting it to the second configuration
- the interchangeable face shield component is simply a facial lens
- the interchangeable face shield component includes a facial lens and a full facepiece seal which is fitted around the lens
- the interchangeable face shield component works as a full facepiece respirator itself when connected to proper respiratory means, but can be converted to a hood respirator by superpositioning a hood over the full facepiece respirator
- the present invention can be field converted between two configurations (e g , a hood and a full facepiece) without the need for special tools (or any tools) Field conversions could be accomplished through the use
- the ability to transition from a full facepiece respirator to various hood type respirators or vice versa, or from one type of hood respirator to another type of hooded respirator, is a significant feature of this invention. This is accomplished by the use of the specially designed parts that consist of the facepiece, lens frame, lens, hard-hats, suspensions and various hood combinations.
- body seals and the common face shield component are coupled via a lens frame tightened around the lens.
- the lens frame is readily disassembled by a user and either the hood or full facepiece attached thereto.
- the lens frame has a securing component that allows disassembly and reassembly without the need for tools or special equipment.
- This modularity provides the user with the ability to change the respirator to the user's particular needs and to realize both economies and conveniences.
- the user can replace worn, soiled or contaminated components as needed and as desired.
- a further advantage of this invention is that a variety of hoods may be interchanged with other respirator components, from traditional loose fitting types to tight fitting hoods. This gives the user the ability to utilize air delivery from an air compressor via piping and hoses, or from a powered air purifying respirator (PAPR).
- PAPR powered air purifying respirator
- With a tight fitting hood positive pressure air can be provided to the user by self contained breathing apparatus (SCB A) or the respirator can be used in the negative pressure mode (where the user inhales air through filters).
- FIG. 1 shows a front perspective view of a prior art full facepiece respirator, such as disclosed in U.S. Patent No. 5,924,420.
- FIG. 2 shows a front perspective view of a typical prior art respirator hood, such as a 3M R-Series hood having a built-in head suspension.
- FIG. 3 illustrates, in front elevation, group I embodiments of the present invention in which the common component is a bare facial lens that can interchangeably fit on either a full facepiece seal or a hood body seal.
- FIG. 4 illustrates, in front elevation, group II embodiments of the present invention in which the common component is a facial lens mounted with respiratory means.
- the common component can interchangeably fit on either a full facepiece seal or a hood.
- FIG. 5 illustrates, in side elevation, an interchangeable facial lens mounted with respiratory means and a nose cup being fitted to a hood.
- the hood has a harness that can be used to tighten the nose cup against the user's face.
- FIG. 6 illustrates, in side elevation, a full facepiece respirator being converted to a respirator hood with a full facepiece seal.
- FIG. 7 is a perspective view of a respirator hood with a full facepiece seal, converted from a full facepiece respirator by superpositioning a hood over the full facepiece seal.
- a complete respirator configuration can be generally described as comprising (1) an interchangeable face shield component, (2) a removable body seal suitable for coupling with the interchangeable face shield component forming a seal with the face shield component along the contacting edges, and (3) a breathable gas delivery conduit (respiratory means) which may include an air supply pipe, a breathable airway, and filtering components.
- a breathable gas delivery conduit which may include an air supply pipe, a breathable airway, and filtering components.
- part or all of the respiratory means is coupled with the face shield component and considered as part of the interchangeable face shield component.
- the interchangeable face shield component can be any of the following (1) a bare facial lens, (2) a facial lens with a lens frame extending around the lens, (3) a facial lens with ports for receiving necessary respiratory means, (4) a facial lens coupled with respiratory means, (5) a facial lens coupled with a half-face mask or a nose cup, (6) a facial lens coupled with a full facepiece seal, and (7) any practical combination of the above
- the interchangeable face shield component therefore always includes a facial lens but in some embodiments also includes the above-identified other components attached to the lens
- the facial lens may be any type known in the art such as a transparent lens, a tinted lens, a coated lens or a special lens translucent to a narrow range of light in the spectrum (e g , UV light)
- any of the above configurations as an "interchangeable face shield component” only suggests that the component may be interchanged as a whole unit, but does not suggest that the component is configured as a single integral unit to prevent further interchangeability of any parts of the component such as the respiratory means, half face mask, nose cup, or full facepiece seal It is therefore a feature of the present invention that the modularity and interchangeability is scalable in that although all components may be made modular, these components are not always removed or interchanged in a single conversion
- any respirator design employing a body seal and facial lens is potentially useable with the present invention
- Exemplary body seals would include a full facepiece seal (e g , see FIG 1), a respirator hood (see e g , FIG 2), or a full body respirator suit
- a respirator hood with a full facepiece seal is still considered a respirator hood
- a full body respirator suit with a full facepiece seal is still considered as a full body respirator suit
- the interchangeable face shield component has a perimeter sealing edge around the perimeter edge of the facial lens That sealing edge may be on the lens itself and/or on some other portion of the face shield component which is attached to the lens
- the body seal has a front opening to receive the interchangeable face shield component
- a seal can be formed along the perimeter sealing edge of the face shield component and the edge of the front opening on the body seal
- the seal formed between the face shield component and the body seal is at least effective to prevent contaminant intrusion into the interior of the respirator (in some cases,
- an integral, peripheral edge of the lens itself is the perimeter sealing edge of the face shield component.
- the interchangeable face shield component comprises a facial lens and a lens frame fitted around the lens. In this instance, an outer peripheral edge of the lens frame, rather than that of the lens itself, is the perimeter sealing edge of the face shield component.
- the interchangeable face shield component comprises a facial lens and a full facepiece seal coupled either integrally or interchangeably to the lens.
- the perimeter edge of the lens defines a perimeter sealing edge.
- the full facepiece seal is preferably coupled to the lens using a lens coupling frame or a bracket fitted around the lens along the perimeter edge of the lens.
- the coupling frame or the bracket may be removed, a hood is superpositioned over the full facepiece seal, and the coupling frame or the bracket is replaced and tightened again to secure both the hood and the full facepiece seal along the integral, peripheral edge of the lens.
- a seal is defined along the perimeter sealing edge of the face shield component, the sealing edge of the full facepiece seal and the perimeter edge of the front opening of the hood.
- the full facepiece seal is coupled to the lens along the contacting edges without using a frame or bracket. Such coupling may be accomplished by using mechanical fasteners employing microstructured sealing and retention elements.
- the perimeter edge of the full facepiece seal and the perimeter edge of the lens define an optional second perimeter sealing edge.
- a hood can be superpositioned over the full facepiece seal without having to remove the full facepiece seal.
- a seal is defined between the hood and the face shield component along the second perimeter sealing edge of the face shield component and the sealing edge of the front opening of the hood.
- the hood may be coupled to the interchangeable face shield component without removing the coupling frame or the bracket.
- the modularity of the invention provides significant advantages by permitting the user to select the type of respirator needed for personal or environmental reasons.
- low levels of contaminants may permit a user to employ the full facepiece respirator utilizing the negative pressure mode
- the user can convert the respirator to a tight fitting hood and a positive pressure air delivery system such as filtered air delivered by a powered air purifying respirator (PAPR)
- PAPR powered air purifying respirator
- other air delivery systems can be selected (such as compressed air system and self contained breathing apparatus (SCBA))
- a full facepiece respirator can use a negative pressure air delivery mode with filters and cartridges, air supplied mode with airline connected to air compressor, SCBA, or PAPR
- Such full facepiece respirators typically include a transparent facial lens and may also include mounts or orifices for accepting the replaceable filter elements or connectors to air supplies
- mounts or orifices may be formed on separate mounting hardware mechanically attached to the facepiece for connecting to breathable air source as in 3M Full Facepiece Respirator 7000 series, or be formed integrally on the facial lens as disclosed in U S Patent No 5,924,420 to Reischel et al
- a full facepiece respirator can be easily converted to a tight fitting hood respirator (e g , the hood coupled with the full facepiece respirator) without having to replace the respiratory means, all the above modes of air supplies are also available for a tight fitting hood respirator With the loose fitting hood configuration such as 3M's H-600 series, air delivery can be a PAPR or supplied air from a suitable air
- a respirator system comprises a common interchangeable face shield component and a plurality of removable body seals suitable for coupling with the interchangeable face shield component to form a seal with the face shield component along their respective contacting edges
- the common component 2 in the interchangeable system is a bare facial lens 3 without attachments to the lens
- the facial lens 3 can be removed from an opening 4 therefor in a full facepiece respirator 5 by disengaging the lens from 3 the full facepiece seal 6
- the lens 3 can then be sealably mounted into a like opening 7 on a hood 8
- Those respiratory components 10 which provide air or air filtration to the respirator 5 are separate from the lens
- the air supply for the hood 8 (not shown) is separate from the facial lens 3
- the Group I embodiments enables a user to use the facial lens 3 interchangeably without interfering with the preferred modes of air supply
- the common component 22 in the interchangeable system is a facial lens 24 coupled either integrally or separably with necessary respiratory components 20
- the common component 22, however, does not include a full facepiece seal behind the
- the respiratory components 120 of a common component 122 may include a half face mask or a nose cup 132, which may be either integrated with the lens 124 or adapted to facilitate further interchangeability or disposability
- a harness is required to tighten the half face mask or the nose cup against the user's face
- an adjustable harness 134 that is attached to the hood 128 and can be tightened (or loosened) from the outside of the hood 128, preferably from the back of the user
- the half face mask or the nose cup 132 is connected to the lens 124 and the lens to the hood 128, such a harness 134 can be adapted to tighten the half face mask or the nose cup 132 against the user's face Group in Embodiments
- the common component 242 comprises a facial lens 244 coupled with a full
- the inventive system can be changed to a full facepiece respirator by simply removing the hood Alternatively, the hood may be replaced by a different hood
- the facial lens may be any of the following a bare lens, a lens with orifices formed on the surface for the purpose of hosting gas inlet-outlet ports or connectors for air supply pipes, or a lens coupled with the necessary respiratory means
- an interchangeable face shield component a "common component”
- Other components such as the body seal
- a user may start with a hood respirator, and then replace the face shield component with a different face shield component while keeping the hood.
- the hood is a common component in the meaning of the above description.
- fastening devices such as a bracket, a band, a clamp or a latch
- various fasteners such as those which employ microstructured sealing mechanisms can be used for the same purpose. These fasteners can be used to seal two opposite surfaces together without the assistance of a separate mechanical fastening device.
- these fasteners are the well known hook-and-loop type fasteners, and mushroom-type hook strips disclosed in U.S. Patent No. 5,077,870 to Melbye et al.
- Frictional engagement and/or sealing characteristics between opposed rim portions on cooperative sealing components may also be enhanced by forming one or more of the opposed surfaces with microstructured surface features such as disclosed in U.S. Patent No. 5,508,084 to Reeves et al., or any other equivalences known in the art.
Abstract
Description
Claims
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE60138648T DE60138648D1 (en) | 2001-01-18 | 2001-06-05 | MODULAR ATOMS AND METHOD FOR CONVERTING THE SAME |
AU2001266711A AU2001266711B2 (en) | 2001-01-18 | 2001-06-05 | Modular respirators and a method of conversion thereof |
JP2002557470A JP2004523277A (en) | 2001-01-18 | 2001-06-05 | Modular respirators and methods of replacing them |
EP01944285A EP1353728B1 (en) | 2001-01-18 | 2001-06-05 | Modular respirators and a method of conversion thereof |
KR1020037009450A KR100753702B1 (en) | 2001-01-18 | 2001-06-05 | Modular respirators and a method of conversion thereof |
AT01944285T ATE430602T1 (en) | 2001-01-18 | 2001-06-05 | MODULAR BREATHING APPARATUS AND METHOD FOR CONVERSION THE SAME |
PL365374A PL196737B1 (en) | 2001-01-18 | 2001-06-05 | Modular respirators and a method of conversion thereof |
CA002433411A CA2433411A1 (en) | 2001-01-18 | 2001-06-05 | Modular respirators and a method of conversion thereof |
NO20033227A NO20033227D0 (en) | 2001-01-18 | 2003-07-16 | Module respirator devices and a method of conversion thereof |
HK04102320.3A HK1061367A1 (en) | 2001-01-18 | 2004-03-30 | Modular respirators and a method of conversion thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/765,224 US6895960B2 (en) | 2001-01-18 | 2001-01-18 | Modular respirators and a method of conversion thereof |
US09/765,224 | 2001-01-18 |
Publications (2)
Publication Number | Publication Date |
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WO2002056965A1 true WO2002056965A1 (en) | 2002-07-25 |
WO2002056965A8 WO2002056965A8 (en) | 2003-11-06 |
Family
ID=25072977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2001/018144 WO2002056965A1 (en) | 2001-01-18 | 2001-06-05 | Modular respirators and a method of conversion thereof |
Country Status (16)
Country | Link |
---|---|
US (2) | US6895960B2 (en) |
EP (1) | EP1353728B1 (en) |
JP (1) | JP2004523277A (en) |
KR (1) | KR100753702B1 (en) |
CN (1) | CN1301765C (en) |
AR (1) | AR032795A1 (en) |
AT (1) | ATE430602T1 (en) |
AU (1) | AU2001266711B2 (en) |
CA (1) | CA2433411A1 (en) |
DE (1) | DE60138648D1 (en) |
HK (1) | HK1061367A1 (en) |
NO (1) | NO20033227D0 (en) |
PL (1) | PL196737B1 (en) |
TW (1) | TW553753B (en) |
WO (1) | WO2002056965A1 (en) |
ZA (1) | ZA200306330B (en) |
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- 2001-06-05 WO PCT/US2001/018144 patent/WO2002056965A1/en active Application Filing
- 2001-06-05 PL PL365374A patent/PL196737B1/en unknown
- 2001-06-05 DE DE60138648T patent/DE60138648D1/en not_active Expired - Lifetime
- 2001-06-05 KR KR1020037009450A patent/KR100753702B1/en not_active IP Right Cessation
- 2001-06-05 EP EP01944285A patent/EP1353728B1/en not_active Expired - Lifetime
- 2001-06-05 CA CA002433411A patent/CA2433411A1/en not_active Abandoned
- 2001-06-05 AT AT01944285T patent/ATE430602T1/en not_active IP Right Cessation
- 2001-06-05 CN CNB018220436A patent/CN1301765C/en not_active Expired - Fee Related
- 2001-06-05 AU AU2001266711A patent/AU2001266711B2/en not_active Ceased
-
2002
- 2002-01-15 TW TW091100462A patent/TW553753B/en not_active IP Right Cessation
- 2002-01-17 AR ARP020100153A patent/AR032795A1/en unknown
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2003
- 2003-07-16 NO NO20033227A patent/NO20033227D0/en not_active Application Discontinuation
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2004
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104127967A (en) * | 2003-11-21 | 2014-11-05 | 3M创新有限公司 | Respiratory facepiece and method of making a facepiece using separate molds |
JP2008508027A (en) * | 2004-07-28 | 2008-03-21 | ゴア エンタープライズ ホールディングス,インコーポレイティド | Protective clothing assembly |
JP4728333B2 (en) * | 2004-07-28 | 2011-07-20 | ゴア エンタープライズ ホールディングス,インコーポレイティド | Protective clothing assembly |
US7594510B2 (en) | 2006-03-31 | 2009-09-29 | 3M Innovative Properties Company | Respiratory protection device |
US8074648B2 (en) | 2006-03-31 | 2011-12-13 | 3M Innovative Properties Company | Respiratory protection device |
USD881380S1 (en) | 2017-10-16 | 2020-04-14 | Gentex Corporation | Respirator |
Also Published As
Publication number | Publication date |
---|---|
CA2433411A1 (en) | 2002-07-25 |
AR032795A1 (en) | 2003-11-26 |
AU2001266711B2 (en) | 2007-09-13 |
EP1353728A1 (en) | 2003-10-22 |
JP2004523277A (en) | 2004-08-05 |
KR20030067751A (en) | 2003-08-14 |
US20050103335A1 (en) | 2005-05-19 |
ZA200306330B (en) | 2004-09-03 |
WO2002056965A8 (en) | 2003-11-06 |
NO20033227L (en) | 2003-07-16 |
CN1486207A (en) | 2004-03-31 |
HK1061367A1 (en) | 2004-09-17 |
ATE430602T1 (en) | 2009-05-15 |
US6895960B2 (en) | 2005-05-24 |
PL365374A1 (en) | 2005-01-10 |
EP1353728B1 (en) | 2009-05-06 |
DE60138648D1 (en) | 2009-06-18 |
US20020092522A1 (en) | 2002-07-18 |
NO20033227D0 (en) | 2003-07-16 |
CN1301765C (en) | 2007-02-28 |
TW553753B (en) | 2003-09-21 |
KR100753702B1 (en) | 2007-08-30 |
PL196737B1 (en) | 2008-01-31 |
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