USH1023H - Removable lens cover for protective coveralls - Google Patents

Removable lens cover for protective coveralls Download PDF

Info

Publication number
USH1023H
USH1023H US07421413 US42141389A USH1023H US H1023 H USH1023 H US H1023H US 07421413 US07421413 US 07421413 US 42141389 A US42141389 A US 42141389A US H1023 H USH1023 H US H1023H
Authority
US
Grant status
Grant
Patent type
Prior art keywords
lens
cover
coveralls
wearer
removable
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.)
Abandoned
Application number
US07421413
Inventor
Timothy R. Wiseman, Sr.
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
E I du Pont de Nemours and Co
Original Assignee
E I du Pont de Nemours and Co
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
Grant date

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00Breathing 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
    • A62B18/08Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices
    • A62B18/082Assembling eyepieces, lenses or vision-correction means in or on gas-masks
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/02Goggles
    • A61F9/025Special attachment of screens, e.g. hinged, removable; Roll-up protective layers
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B17/00Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
    • A62B17/04Hoods

Abstract

In protective coveralls with a head covering with a transparent permanent lens over the face area, a separate removable lens cover attached over the permanent lens which is adapted for very rapid removal in situations when the lens cover is clouded by a foreign material.

Description

BACKGROUND OF THE INVENTION

The present invention relates to garments for providing protection to the wearer in a hazardous environment and more particularly relates to a removable lens cover attached over a permanent lens of a head covering of the protective coveralls which is adapted for very rapid removal in situations when the lens cover is clouded by a foreign material.

Various types of protective coveralls are known for use in protecting the wearer of the coveralls from hazards including flame, hot and/or corrosive chemicals, molten metals, and the like. One such type of coveralls includes a one-piece suit for the body, arms and legs and a separate, removable head covering is worn together with the one-piece suit. The coveralls generally have a laminated construction with a durable, usually waterproof, outer shell which is impervious to the hazards to be encountered and a liner which increases the protection against high temperature conditions and may also include additional barrier layers.

The head covering of such suits typically includes an internal hard hat which supports a downwardly-draping hood of the outer shell material with liner about the wearer's head and may included a hood bib which extends downwardly about the chest and back of the wearer. So that the wearer can see, the hood has an opening at the face area which is covered by a transparent viewing lens. While suits with head covering of this type are capable of providing protection from the hazards to be encountered for specified limited periods, the wearer is at risk if his vision is obscured by the viewing lens becoming clouded by a foreign material, e.g., a leaking hot chemical sprayed onto the viewing lens. If the wearer cannot see well enough to escape quickly from the hazard, the exposure limits of the suit may be exceeded and injury may result. Even worse, the wearer may be forced to remove the head covering in order to see for his escape and be injured due to direct exposure.

SUMMARY OF THE INVENTION

The invention relates to improved protective coveralls having a main suit for covering the torso, arms and legs of wearer and a head covering with a transparent permanent viewing lens over the face of the wearer. In accordance with the invention, a separate removable transparent lens cover is provided which is dimensioned to cover at least a substantial portion of the viewing area of the exterior of the permanent lens. The lens cover is removably attached to the head covering with said lens cover overlying the exterior of said permanent lens. A handhold attached to the lens cover enables the wearer to grasp the handhold and very rapidly detach the removable lens in the event that the lens cover becomes clouded by a foreign material.

In accordance with a preferred form of the invention, the lens cover is attached to the head covering by attachment to the permanent lens with pressure-sensitive adhesive. In accordance with another preferred form of the invention, the handhold is provided by a pull tab, most preferably an extension of the lens cover, which extends from the lens cover past the periphery of the permanent lens.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention and its advantages may be understood by reference to the following detailed description when read in conjunction with the accompanying drawings in which:

FIG. 1 is a somewhat diagrammatical perspective view of coveralls incorporating a preferred lens cover in accordance with the present invention;

FIG. 2 is an enlarged partial plan view of head covering of the protective coveralls of FIG. 1;

FIG. 3 is a plan view of the lens cover of the protective coveralls of FIG. 1 shown removed from the coveralls; and

FIG. 4 is a partially diagrammatical cross-sectional view of a viewing lens mounting system for the coveralls of FIG. 1.

DETAILED DESCRIPTION

Referring now to the drawings in which like reference characters designate like or corresponding parts throughout the several views, there is shown in FIG. 1 protective coveralls 10 embodying a preferred form of the present invention. The protective coveralls include a main suit 12 and a removable head covering 14. The head covering 14 includes a viewing lens 16 and a downwardly draping hood 18 for covering the head of the wearer of the coveralls 10 and which also includes a hood bib 20 covering the upper areas of the main suit 12 including the shoulders, chest and back of the wearer.

The coveralls 10 depicted are intended to represent coveralls which have any of a variety of laminated constructions for protection against hazards including steam, flame, and hot and/or corrosive chemicals which include a durable, usually liquid impervious outer shell and a thermal insulative inner liner which may include other barrier layers. The laminated construction is employed for most portions of the coveralls although the unlined shell may comprise portions of the suit which are not in direct contact with the body such as the hood bib 20. Suitable shell fabrics include woven aramid fabrics such as a fabric woven from poly(paraphenylene terephthalamide) which has been laminated to a liquid impervious layer such as an aluminum film-poly(ethylene terephthalate) film laminate. Suitable liner fabrics include multilayer laminates such as those employing at least a layer of woven poly(metaphenylene isophthalamide) and a nonwoven layer such as one or more layers of spun-laced fabric of poly(paraphenylene terephthalamide).

Referring still to FIG. 1, the main suit 12 includes a torso portion 22, sleeves 24 for covering the wearer's arms, and leg portions 30. A main closure 32 is provided in the main suit 12 for providing access into the suit.

Referring now to FIGS. 1, 2 and 4, the viewing lens 16 of the head covering 14 is constructed using a metal frame 34 which frames an opening in the front of the hood 18 at a location corresponding to the face area of the wearer. The metal frame 34 which is shaped to conform to curvature of the hood 18 supports and is used to connect the permanent lens 16 to the hood 18. The permanent viewing lens 16 can be a shatter resistant transparent polymeric material which conforms to the shape of the frame 34. A preferred material for this purpose is the polycarbonate sheet having a thickness of 0.117 inches (3 mm) sold by General Electric under the trademark Lexan which has been heat set into a generally cylindrical configuration as is apparent from FIG. 2. Preferably, the cylindrical viewing lens 16 provides an arc of the cylinder at least about 165°, most preferably 180°, to give the wearer a field of view which is near normal in terms of width.

As shown in FIG. 4 which, for the purposes of illustration, does not show the curvature of the frame 34 and lens 16, a seal 36 such as a urethane foam seal corresponding to the dimensions of the frame is used between the frame 34 and the lens 16. The shell fabric of the hood 18, preferably hemmed to provided a double layer, is clamped between the seal and the lens 16. Bolts 38 and acorn nuts 40 provided in bores through the frame and lens or other suitable fasteners are used to pull the lens toward the frame to securely clamp the hood fabric.

Referring now to FIGS. 1-4, the protective coveralls 10 include a removable lens cover 42. The lens cover 42 is attached to the head covering 10 but is adapted for quick removal by the wearer in the event that the lens cover 42 is clouded by a foreign material. The lens cover is preferably a thin, flexible polymeric sheet, most preferably provided by a poly(ethylene terephthalate) film having a thickness of between about 0.005 and about 0.01 inches (between about 0.13 mm and about 0.25 mm). The film is suitably dimensioned to cover a substantial portion, and most preferably substantially all of the exterior of the viewing lens 16. Preferably, an antistat is provided on the surface of the film to prevent it from collecting dust and other foreign materials. As shown in FIG. 3, it is preferable for the removable lens cover 42 to have a generally rectangular configuration which will overlie and correspond to the shape of the exterior surface of the viewing lens 16. As shown in FIG. 3, the removable lens cover 42 thus has two upright edges 44 and two horizontal edges 46.

In the preferred embodiment of the invention illustrated, the lens cover 42 is attached by means of pressure sensitive adhesive such as a clear acrylic adhesive. A suitable adhesive for this purpose is an adhesive identified as No. 444 sold by the 3M Corporation. In the preferred embodiment depicted, the adhesive is applied adjacent the upright edges 44 of the lens cover 42 so that the lens cover 42 is attached only along its upright edges 44 where at most only an insignificantly small degree of the peripheral vision of the wearer will be affected by the presence of the adhesive. Preferred locations for the adhesive on the lens cover 42 are identified by the character 48 in FIG. 3.

The removable lens cover 42 is provided with a handhold which facilitates removal by the wearer in the event that the lens cover 42 becomes clouded. In the embodiment depicted, the handhold is a pull tab which is an extension 50 of the lens cover 42 which extends outwardly from one of the upright edges 44 of the lens cover 42 by a distance "x" (FIG. 3) of between about 3 cm to about 8 cm. The extension 50 thus provides a pull tab for the removable lens 42 which extends outwardly past the periphery of the permanent lens 16. Because the permanent lens 16 is recessed within the frame 34 as shown in FIG. 4, the extension 50 is supported by the frame 34 in a position extending at an angle outwardly away from the frame 34 and the hood 18 and thus is in a position to be grasped easily.

In use, the removable lens cover 42 is used over the viewing lens 16 and the suit is used normally until there is a spill which causes the lens cover to be clouded and obscure the vision of the wearer. If this occurs, the wearer grasps the extension 50 of the removable lens cover 42 which forms the handhold and pulls outwardly and across to remove the lens cover 42 from the viewing lens 16. All covered portions of the viewing lens 16 will then be clear and the wearer of the coveralls will regain his vision and be able to escape from the hazard.

In FIG. 1, the lens cover 42 is attached so that the extension 50 which forms the pull tab is on the right side of the coveralls 10 from the perspective of the wearer. This configuration is well-suited for right-handed wearers who will naturally use their right hand to remove the lens cover 42. The lens cover 42 can be similarly attached with the extension 50 on the left side as desired by some left-handed wearers. At the option of the wearer, the extension can be positioned on the left side for a right-handed person, for example, and the wearer would reach across his face to grasp the pull tab and pull back toward the right to remove the lens cover 42.

The coveralls in accordance with the present invention decrease the risk of injury in the event that the wearer's vision is obscured due to chemical spills on the viewing lens. In addition, the removable lens cover provides protection for the viewing lens 16 in normal use. The polymeric sheet lenses typically used in suits of this type can be scratched and thus any scratches on the exterior of the lens which do occur will occur on the lens cover 42 and not the viewing lens 16. Thus, the lens cover 42 can be periodically replaced and thus prolong the life of the viewing lens 16.

While a preferred embodiment has been shown and described in the foregoing detailed description, it will be understood that the invention is capable of numerous modifications, rearrangements and substitution of parts without departing from the spirit of the invention as set forth in the appended claims.

Claims (9)

I claim:
1. In protective coveralls for providing protection to a wearer of the coveralls in a hazardous environment, said coveralls having a main suit for covering the torso, arms and legs of the wearer and a head covering with a transparent permanent viewing lens over the face of the wearer, the improvement which comprises:
a separate removable transparent lens cover dimensioned to cover at least a substantial portion of the viewing area of the exterior of said permanent lens;
attachment means for removably attaching said lens cover to said head covering with said lens cover overlying the exterior of said permanent lens; and
a pull tab attached to said removable lens and extending outwardly from the lens cover past the periphery of the permanent lens for providing a handhold for the wearer, whereby the wearer can grasp the pull tab and very rapidly detach the removable lens.
2. The protective coveralls of claim 1 wherein said removable lens is a thin, flexible polymeric sheet.
3. The protective coveralls of claim 2 wherein said thin, polymeric sheet is a sheet of poly(ethylene terephthalate).
4. The protective coveralls of claim 3 wherein said poly(ethylene terephthalate) sheet is between 0.13 mm and 0.25 mm thick.
5. The protective coveralls of claim 1 wherein said attachment means comprises pressure-sensitive adhesive for attaching said removable lens to said permanent lens.
6. The protective coveralls of claim 5 wherein said permanent lens is generally cylindrical in shape when viewed from above the head covering and said removable lens is rectangular in shape before attachment to the head covering and is flexible to conform to the shape of the generally cylindrical permenent lens following attachment to the head covering, said removable lens having two generally upright edges and two horizontal edges with said pressure-sensitive adhesive securing said removable lens adjacent said two generally upright edges.
7. The protective coveralls of claim 6 wherein said pull tab is attached adjacent to and extends outwardly from one of said upright edges of said removable lens.
8. The protective coveralls of claim 7 wherein said pull tab comprises an extension of said removable lens.
9. The protective coveralls of claim 8 wherein said extension of said lens extends outwardly from said upright edge of said lens cover by a distance of 3 cm and 8 cm.
US07421413 1989-10-13 1989-10-13 Removable lens cover for protective coveralls Abandoned USH1023H (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US07421413 USH1023H (en) 1989-10-13 1989-10-13 Removable lens cover for protective coveralls

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07421413 USH1023H (en) 1989-10-13 1989-10-13 Removable lens cover for protective coveralls

Publications (1)

Publication Number Publication Date
USH1023H true USH1023H (en) 1992-03-03

Family

ID=23670407

Family Applications (1)

Application Number Title Priority Date Filing Date
US07421413 Abandoned USH1023H (en) 1989-10-13 1989-10-13 Removable lens cover for protective coveralls

Country Status (1)

Country Link
US (1) USH1023H (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5664566A (en) * 1994-09-30 1997-09-09 Puritan-Bennett Corporation Quick-donning full face oxygen mask with inflatable harness and soft foldable lens
US5809580A (en) * 1996-12-20 1998-09-22 Bausch & Lomb Incorporated Multi-sport goggle with interchangeable strap and tear-off lens system
US6328031B1 (en) 1997-03-20 2001-12-11 Michael Scott Tischer Firefighting hood and face mask assembly
US6687910B1 (en) * 2002-09-13 2004-02-10 Ronald F. Smallwood Smoke simulating shield covering SCBA faceplate
US20050010992A1 (en) * 2003-07-18 2005-01-20 Conrad Klotz Head gear apparatus
US6895960B2 (en) * 2001-01-18 2005-05-24 3M Innovative Properties Company Modular respirators and a method of conversion thereof
US20060285218A1 (en) * 1999-11-24 2006-12-21 Bart Wilson Dual tab lenses
US20060283455A1 (en) * 2005-06-15 2006-12-21 Walker Garry J Convertible respiratory hood assembly
US20090025608A1 (en) * 2007-07-26 2009-01-29 3M Innovative Properties Company Fluorochemical urethane compounds having pendent silyl groups
US20090025727A1 (en) * 2007-07-26 2009-01-29 3M Innovative Properties Company Respirator, welding helmet, or face shield that has low surface energy hard-coat lens
US20110093998A1 (en) * 2009-10-26 2011-04-28 Brennan John P Protective Insect Barrier Hood, Kit and Method Therefor
US20110265790A1 (en) * 2007-10-05 2011-11-03 Garry J Walker Respirator Hose and Attachment Apparatus and Method
US8261375B1 (en) 2003-06-19 2012-09-11 Reaux Brian K Method of forming a protective covering for the face and eyes
US20130052427A1 (en) * 2011-08-30 2013-02-28 Cerium Group Limited Composite protective sheet material
US8636369B2 (en) 2010-10-19 2014-01-28 International Business Machines Corporation Prevention and remediation of damage to optical surfaces
US9295297B2 (en) 2014-06-17 2016-03-29 Racing Optics, Inc. Adhesive mountable stack of removable layers

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7178526B2 (en) 1994-09-30 2007-02-20 Be Intellectual Property, Inc. Quick-donning full face oxygen mask with inflatable harness and soft foldable lens
US6070580A (en) * 1994-09-30 2000-06-06 Be Intellectual Property, Inc. Quick-donning full face oxygen mask with inflatable harness and soft foldable lens
US20110168182A1 (en) * 1994-09-30 2011-07-14 Be Intellectual Property, Inc. Quick-donning full face oxygen mask with inflatable harness and soft foldable lens
US6443155B1 (en) 1994-09-30 2002-09-03 Be Intellectual Property, Inc. Quick-donning full face oxygen mask with inflatable harness and soft foldable lens
US5664566A (en) * 1994-09-30 1997-09-09 Puritan-Bennett Corporation Quick-donning full face oxygen mask with inflatable harness and soft foldable lens
US6672307B2 (en) 1994-09-30 2004-01-06 Be Intellectual Property, Inc. Quick-donining full face oxygen mask with inflatable harness and soft foldable lens
US20040060562A1 (en) * 1994-09-30 2004-04-01 Mcdonald Thomas K. Quick-donning full face oxygen mask with inflatable harness and soft foldable lens
US5809580A (en) * 1996-12-20 1998-09-22 Bausch & Lomb Incorporated Multi-sport goggle with interchangeable strap and tear-off lens system
US6328031B1 (en) 1997-03-20 2001-12-11 Michael Scott Tischer Firefighting hood and face mask assembly
US6578572B2 (en) 1997-03-20 2003-06-17 Jerry Yort Firefighting hood and face mask assembly
US20060285218A1 (en) * 1999-11-24 2006-12-21 Bart Wilson Dual tab lenses
US6895960B2 (en) * 2001-01-18 2005-05-24 3M Innovative Properties Company Modular respirators and a method of conversion thereof
US6687910B1 (en) * 2002-09-13 2004-02-10 Ronald F. Smallwood Smoke simulating shield covering SCBA faceplate
US8261375B1 (en) 2003-06-19 2012-09-11 Reaux Brian K Method of forming a protective covering for the face and eyes
US20050010992A1 (en) * 2003-07-18 2005-01-20 Conrad Klotz Head gear apparatus
US20060101557A1 (en) * 2003-07-18 2006-05-18 Depuy Products, Inc. Head gear apparatus having improved air flow arrangement
US6990691B2 (en) * 2003-07-18 2006-01-31 Depuy Products, Inc. Head gear apparatus
US20070151002A1 (en) * 2003-07-18 2007-07-05 Depuy Products, Inc. Head gear apparatus having improved air flow arrangement
US7937779B2 (en) 2003-07-18 2011-05-10 Depuy Products Head gear apparatus having improved air flow arrangement
US7200873B2 (en) 2003-07-18 2007-04-10 Depuy Products, Inc. Head gear apparatus having improved air flow arrangement
US20060283455A1 (en) * 2005-06-15 2006-12-21 Walker Garry J Convertible respiratory hood assembly
US20090025727A1 (en) * 2007-07-26 2009-01-29 3M Innovative Properties Company Respirator, welding helmet, or face shield that has low surface energy hard-coat lens
US20090025608A1 (en) * 2007-07-26 2009-01-29 3M Innovative Properties Company Fluorochemical urethane compounds having pendent silyl groups
US8015970B2 (en) 2007-07-26 2011-09-13 3M Innovative Properties Company Respirator, welding helmet, or face shield that has low surface energy hard-coat lens
US7897678B2 (en) 2007-07-26 2011-03-01 3M Innovative Properties Company Fluorochemical urethane compounds having pendent silyl groups
US20110265790A1 (en) * 2007-10-05 2011-11-03 Garry J Walker Respirator Hose and Attachment Apparatus and Method
US20110093998A1 (en) * 2009-10-26 2011-04-28 Brennan John P Protective Insect Barrier Hood, Kit and Method Therefor
US8636369B2 (en) 2010-10-19 2014-01-28 International Business Machines Corporation Prevention and remediation of damage to optical surfaces
US20130052427A1 (en) * 2011-08-30 2013-02-28 Cerium Group Limited Composite protective sheet material
US9295297B2 (en) 2014-06-17 2016-03-29 Racing Optics, Inc. Adhesive mountable stack of removable layers
US9526290B2 (en) 2014-06-17 2016-12-27 Racing Optics, Inc. Adhesive mountable stack of removable layers
US9968155B2 (en) 2014-06-17 2018-05-15 Racing Optics, Inc. Adhesive mountable stack of removable layers

Similar Documents

Publication Publication Date Title
US3465365A (en) Kneepad
US3093829A (en) Protective apron construction
US3429138A (en) Cooling vest
US5020533A (en) Face mask with liquid and glare resistant visor
US6990691B2 (en) Head gear apparatus
US5318018A (en) Advanced aircrew protection system
US5221572A (en) Stretchable protective fabric and protective apparel made therefrom
US5392686A (en) Telescopic total body protective shield
US4547904A (en) Survival suit
US5561863A (en) Surgical face mask
US6158429A (en) Hood respirator for protection against biological hazards
US4896378A (en) Protective wrist band
US2994089A (en) Protective garment
US5115516A (en) Garment with neck covering
US5044011A (en) Articulated body armor
US4286170A (en) X-Ray face mask and chest shield device
US4823404A (en) Two piece protective garment
US5636382A (en) Protective systems for sensitive skin
US4413357A (en) Protective shields
US4507806A (en) Protective garment
US5431318A (en) Ballistic panel carrier having pocket for backup gun
US5588153A (en) Surgical gown
US5493734A (en) Neck shield attachment for helmet
US5081715A (en) Palm protector
US4635628A (en) Surgical face mask with improved moisture barrier

Legal Events

Date Code Title Description
AS Assignment

Effective date: 19891204

Owner name: E.I. DU PONT DE NEMOURS AND COMPANY, DELAWARE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:WISEMAN, TIMOTHY R. SR.;REEL/FRAME:005219/0947