Main, Richard E. (Fredericksburg, VA, US)

Plaque It!

10/989863

10/07/2008

11/15/2004

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The United States of America as represented by the Secretary of the Navy (Washington, DC, US)

383/109

206/720, 383/105, 383/107, 383/6, 383/119

B65D30/00; B65D33/06; B65D33/00; B65D30/08; B65D33/02; B65D85/00

383/111, 383/117, 383/12, 383/38, 383/109, 206/719, 206/720, 383/107, 383/6, 383/119, 190/125, 383/108

3647134	PHOTOGRAPHIC BAG	March, 1972	Carnevalino	206/455
4154344	Material for forming envelopes used to protect electronic components	May, 1979	Yenni, Jr. et al.	206/524.6
4471872	Conductive resealable pouch	September, 1984	Dedow	206/720
4648121	Two layer pack structure with offset seams	March, 1987	Lowe	383/76
4773534	Printed circuit board transporter	September, 1988	DeHeras et al.	206/328
4906494	Antistatic sheet material, package and method of making	March, 1990	Babinec et al.	428/35.2
4907633	Handbag assembly	March, 1990	Eckstein	150/105
4915222	Electromagnetically and electrostatically protected see-through packaging unit for printed circuit boards	April, 1990	Reidinger et al.	206/709
4987997	Packaging bag	January, 1991	Raszewski et al.	206/720
5097949	Static shielding bag	March, 1992	Heldwein	206/720
5526924	Eyewear case	June, 1996	Klutznick	206/5
5533809	Remote control caddy	July, 1996	Gorman	383/11
5791485	Electrostatic discharge protection bag	August, 1998	Carbonneau	206/720
5881883	Protective package having a plurality of pouches	March, 1999	Siegelman	206/720
5947298	Electric apparatus packing bag	September, 1999	Huang	206/769
6112772	Low discharge anti-incendiary flexible intermediate bulk container	September, 2000	Ebadat et al.	139/1R
6129210	Utility box wrap	October, 2000	Rustemeyer et al.	206/736
6238091	Insulated container and liner	May, 2001	Mogil	383/110
6371642	Small items bag for use in dishwasher	April, 2002	Nelson et al.	383/23
6572942	Static dissipative fabric for flexible containers for bulk material	June, 2003	Wurr et al.	428/36.1
6763946	Holder for removable memory component	July, 2004	Martin	206/701
20020012480	Waterproof bag means	January, 2002	Konno	383/111
20020036149	Soft enclosure for data storage device	March, 2002	Kwong	206/308.3
20030054125	Protective electret treated nonwoven web for sensitive surfaces	March, 2003	Singer et al.	428/35.5

Pascua, Jes F.

Thielman, Esq. Gerhard W.

What is claimed is:

1. A bag assembly providing electrostatic discharge (ESD) protection for the contents thereof, comprising: a tote bag having a first end configured to be opened and closed, and a closed second end opposing the first end; an envelope made from an ESD protective material positioned at least partially within the tote bag, the envelope forming join regions along at least two opposing sides thereof; and at least one layer of a reinforcing material coupled to a portion of each of the join regions that resides within the tote bag, wherein the tote bag and the envelope are coupled to one another by stitches that pass through the reinforcing material, the reinforcing material comprises a fibrous web, and the fibrous web comprises a tape.

2. The bag assembly of claim 1 wherein the envelope is defined by two sheets of ESD protective material joined along at least two opposing sides thereof.

3. The bag assembly of claim 2 wherein the envelope includes an open end and is folded at an end thereof opposing the open end, wherein the end so-folded is positioned to abut the closed second end of the tote bag.

4. The bag assembly of claim 1 wherein the reinforcing material comprises at least one layer of tape having bi-directional fibers incorporated therein.

5. The bag assembly of claim 1 wherein the end so-folded of the envelope is coupled to the closed second end of the tote bag.

6. The bag assembly of claim 5 wherein the end so-folded of the envelope is coupled to the closed second end of the tote bag using a hook-and-loop fastening mechanism.

7. The bag assembly of claim 1 further comprising a coupling mechanism attached to the envelope and the tote bag, wherein the open end of the envelope opens to form a two-dimensional opening adapted to receive contents therethrough that are to be stored in the envelope when the first end of the tote bag is opened.

8. The bag assembly of claim 7 wherein the coupling mechanism further comprises a hook-and-loop fastening mechanism and wherein a first portion of the hook-and-loop fastening mechanism is coupled to the envelope and a second portion of the hook-and-loop fastening mechanism is coupled to the tote bag.

9. The bag assembly of claim 8 further comprising double-sided tape configured to attach the first portion of the hook-and-loop fastening mechanism to the envelope.

10. The bag assembly of claim 1 further comprising a closure mechanism coupled to the first end of the tote bag.

11. The bag assembly of claim 1 further comprising at least one carrying strap coupled to the tote bag.

12. A bag assembly providing electrostatic discharge (ESD) protection for the contents thereof, comprising: a tote bag having a first end configured to be opened and closed, and a closed second end opposing the first end; an envelope made from an ESD protective material positioned at least partially within the tote bag, the envelope having an open end, and being folded at an end thereof opposing the open end with the end so-folded positioned to abut the closed second end of the tote bag, the envelope defined by two sheets of ESD protective material sealed together along at least two opposing sides thereof to form sealed regions; at least one strip of tape adhered at least partially to each of the sealed regions, the tape incorporating a fibrous web; and the tote bag and the envelope being coupled to one another by stitches that pass through the tape and portions of the sealed regions to which the tape is adhered.

13. The bag assembly of claim 12 further comprising means for coupling the end so-folded of the envelope to the closed second end of the tote bag.

14. The bag assembly of claim 13 wherein the means for coupling comprises hook-and-loop fastening means.

15. The bag assembly of claim 12 further comprising means positioned between the envelope and the tote bag for causing the open end of the envelope to open to form a two-dimensional opening adapted to receive contents therethrough that are to be stored in the envelope when the first end of the tote bag is opened.

16. The bag assembly of claim 15 wherein the means positioned between the envelope and the tote bag comprises hook-and-loop fastening means wherein a portion of the hook-and-loop fastening means is coupled to the envelope and a complementary portion of the hook-and-loop fastening means is coupled to the tote bag.

17. The bag assembly of claim 16 further comprising double-sided tape for attaching the portion of the hook-and-loop fastening means to the envelope.

18. The bag assembly of claim 12 further comprising closure means coupled to the first end of the tote bag.

19. The bag assembly of claim 12 further comprising at least one carrying strap coupled to the tote bag.

20. A bag assembly providing electrostatic discharge (ESD) protection for the contents thereof, comprising: a tote bag having a first end configured to be opened and closed, and a closed second end opposing the first end; an envelope made from an ESD protective material positioned at least partially within the tote bag and extendable therefrom, the envelope having an open end, being folded at an end thereof opposing the open end with the end so-folded positioned to abut the closed second end of the tote bag, and being dimensioned such that the open end is extendable from the first end of the tote bag when the end so-folded is positioned to abut the closed second end of the tote bag, the envelope defined by two sheets of ESD protective material sealed together along at least two opposing sides thereof to form sealed regions; at least one strip of tape adhered at least partially to each of the sealed regions residing within the tote bag, the tape incorporating a fibrous web; and the tote bag and the envelope being coupled to one another by stitches that pass through the tape and portions of the sealed regions to which the tape is adhered.

21. The bag assembly of claim 20 wherein the end so-folded of the envelope is coupled to the closed second end of the tote bag.

22. The bag assembly of claim 21 wherein the end so-folded of the envelope is coupled to the closed second end of the tote bag using a hook-and-loop fastening mechanism.

23. The bag assembly of claim 20 further comprising a coupling mechanism attached to the envelope and the tote bag, wherein the open end of the envelope opens to form a two-dimensional opening adapted to receive contents therethrough that are to be stored in the envelope when the first end of the tote bag is opened.

24. The bag assembly of claim 23 wherein the coupling mechanism further comprises a hook-and-loop fastening mechanism and wherein a first portion of the hook-and-loop fastening mechanism is coupled to the envelope and a second portion of the hook-and-loop fastening mechanism is coupled to the tote bag.

25. The bag assembly of claim 24 further comprising double-sided tape configured to attach the first portion of the hook-and-loop fastening means to the envelope.

26. The bag assembly of claim 20 further comprising a closure mechanism coupled to the first end of the tote bag.

27. The bag assembly of claim 20 further comprising at least one carrying strap coupled to the tote bag.

STATEMENT OF GOVERNMENT INTEREST

The invention described herein was made in the performance of official duties by employees of the Department of the Navy and may be manufactured, used, licensed by or for the Government for governmental purposes without payment of any royalties thereon.

FIELD OF THE INVENTION

The following description relates generally to the transportation of devices sensitive to electrostatic discharge (ESD), and more particularly to a transportable bag assembly that provides ESD protection for the contents thereof.

BACKGROUND

Electrostatic discharge (ESD) can inadvertently initiate the detonation train in certain ordnance, as well as damage a wide variety of electronic devices. Vulnerability to ESD increases dramatically when ordnance or electronic devices are being transported because they are typically removed from a safe or grounded environment such as housing or a complete grounded system in which they are a component. Accordingly, a variety of ESD bags or envelopes have been designed to provide for ordnance and/or electronic device transportation. In general, ESD bags are made from material that is easily torn. Thus, ESD bags are generally good for only a “one time” usage, or must be packed in a specially-designed protective container if rough handling is expected. However, there is no simple, reusable and transportable system for transporting ESD-sensitive ordnance or electronic devices in an ESD protected manner.

SUMMARY

An assembly is described that can be used to transport ESD-sensitive ordnance or electronic devices while protecting them from ESD. The assembly may be a reusable bag assembly that affords ESD protection for the contents thereof.

In one general aspect, a bag assembly provides electrostatic discharge (ESD) protection for the contents thereof. A tote bag has a first end that can be opened and closed, and a closed second end that opposes the first end. An envelope made from ESD protective material is positioned partially in the tote bag. More specifically, the envelope has an open end, and is folded at an end thereof that opposes the open end with the end so-folded positioned to abut the closed second end of the tote bag. Further, the envelope is defined by two sheets of ESD protective material joined along at least two opposing sides thereof to form join regions. At least one layer of a reinforcing material, such as, for example, a fibrous web, is coupled to a portion of each of the join regions that resides within the tote bag. The tote bag and envelope are coupled to one another by stitches that pass through the reinforcing material.

Other features will become apparent from the following description, including the drawings, and from the claims.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a partially cut-away side view of one implementation of a bag assembly providing ESD protection.

FIG. 2 is a plan view of one implementation of an ESD liner sub-assembly used in the bag assembly of FIG. 1.

FIG. 3 is a cross-sectional view of the ESD liner taken along lines 3 - 3 of FIG. 2.

FIG. 4A is a cross-sectional view of the ESD liner's join region in an implementation having a single strip of tape that incorporates a fibrous web.

FIG. 4B is a cross-sectional view of the ESD liner's join region in an implementation having two strips of tape that incorporate a fibrous web.

FIG. 4C is a cross-sectional view of the ESD liner's join region in an implementation having a fibrous web incorporated between the ESD material layers.

FIG. 4D is a cross-sectional view of the ESD liner's join region in an implementation having a single strip of tape that incorporates a fibrous web, where the tape is folded onto itself beyond the edge of the join region to create a stitch region.

FIG. 5 is a plan view of another implementation of an ESD liner sub-assembly used in the bag assembly of FIG. 1.

FIG. 6 is a cross-sectional view of the ESD liner taken along lines 6 - 6 of FIG. 5.

DETAILED DESCRIPTION

Referring now to FIG. 1, one implementation of a bag assembly providing ESD protection for the contents thereof is illustrated and referenced generally by numeral 10 . Bag assembly 10 can be sized and shaped as needed to satisfy size constraints of contents (not shown) to be stored therein.

Bag assembly 10 includes an outer tote bag 12 defined by a flexible bag 12 A having one open end 12 B formed thereby. Bag 12 A can be made from a wide variety of rugged materials designed to withstand environmental conditions to which bag 12 A will be subjected. Accordingly, the choice of material for bag 12 A is not a limitation.

To facilitate the carrying of tote bag 12 , a carrying strap 12 C optionally may be coupled to bag 12 A. For example, carrying strap 12 C can be adjustable in length and can be stitched to bag 12 A at one or more stitch locations 12 D. Additional straps, different strap configurations (e.g., shoulder straps), and/or strap attachment methodologies can be used.

Bag 12 A may be further equipped to provide for the opening/closing of open end 12 B. For example, as shown, a “duffle bag” closing scheme is used where eyelets 12 E are provided about the periphery of open end 12 B. In order to close bag 12 A, eyelets 12 E are aligned and a clip 12 F is coupled thereto. Clip 12 F can be attached to bag 12 A by, for example, a strap 12 G stitched to bag 12 A at 12 H. Other types of closure systems may be used at open end 12 B. For example, a drawstring closure system, a zipper closure system, a hook and loop closure system, or a button closure system, among others, may be used.

Tote bag 12 serves as the outer bag to at least partially contain an electrostatic discharge (ESD) liner 14 in which electronically-sensitive contents (not shown) will be stored for transportation.

Referring to FIGS. 2 and 3, one implementation of ESD liner 14 is shown in isolation. In this implementation, the ESD liner 14 is formed as an envelope made from two sheets 14 A and 14 B of ESD material (e.g., a flexible and electrostatic protective material satisfying the performance standards established by MIL-PRF-81705). For example, sheets 14 A and 14 B can be joined together (e.g., heat sealed) along three sides thereof. Specifically, opposing edges are sealed at regions 14 C and 14 D, and one end of ESD liner 14 is sealed at end 14 F thereby leaving the envelope open at end 14 E. In another implementation, the envelope may be constructed from a single sheet of ESD material. In yet another implementation, the envelope may be constructed from several sheets of ESD material.

In general, ESD liner 14 is sewn into bag 12 . However, because ESD material tears easily, such sewing can initiate small tears that can compromise the ESD performance of ESD liner 14 . In one implementation, this problem is overcome by coupling one or more layers of a reinforcing material, such as, for example, a fibrous web, to portions of join regions 14 C and 14 D that will be used to stitch liner 14 to bag 12 A. For example, in one implementation, the reinforcing material is a tape 16 incorporating a web of fibers (e.g., bi-directional packing tape or high-temperature tape). The tape 16 may be adhered to each of sheets 14 A and 14 B along portions of each of join regions 14 C and 14 D, and may be wrapped around the edges of join regions 14 C and 14 D.

Next, in one implementation, sealed end 14 F may be folded onto itself at least one time (e.g., along dashed line 14 G) to thereby form a folded end 14 H (FIG. 1) that is positioned to abut the closed end 121 of bag 12 A. ESD liner 14 is then coupled to bag 12 A by stitching (represented by dashed lines 18 ) that passes through bag 12 A, tape 16 , and portions of joined regions 14 C and 14 D to which tape 16 is adhered. The reinforcing material, such as the fibrous tape 16 , retains stitches 18 so that stitch holes (not shown) formed in joined regions 14 C and 14 D cannot grow into tears that could compromise the ESD protection performance of ESD liner 14 . In another implementation, sealed end 14 F is not folded onto itself.

ESD liner 14 may sized such that, after assembly to bag 12 A as just described, open end 14 E of ESD liner 14 extends out from open end 12 B of bag 12 A, as shown in FIG. 1. In this way, when contents are placed in ESD liner 14 (through open end 14 E), ESD liner 14 can be rolled or folded onto itself starting at open end 14 E until ESD liner 14 fits into bag 12 A. Bag 12 A can then be closed to retain the folded form of open end 14 E. As a result, the combination of (i) join regions 14 C/ 14 D, and (ii) fold(s) formed at open ends 14 E and 14 F, a Faraday cage is formed about the contents of ESD liner 14 .

In addition to the use of stitching 18 to retain ESD liner 14 in bag 12 A, folded end 14 H (i.e., formed by folding at 14 G) can be positively retained in its abutting relationship with bag 12 A. This has the benefit of assuring that the weight of contents resting against folded end 14 H is transferred to bag 12 A as opposed to being supported by the weaker sealed end 14 F of ESD liner 14 . Such positive retaining of folded end 14 H can be achieved by using hook-and-loop fastening strips with one strip 20 coupled (e.g., stitched) to the inside of bag 12 A and the complementary strip 22 coupled to ESD liner 14 along folded end 14 H. To avoid unnecessary puncturing of ESD liner 14 , strip 22 can be adhered thereto using, for example, a flexible double-sided tape.

To assure that the opening of bag 12 A simultaneously causes the opening of ESD liner 14 (at open end 14 E), additional hook-and-loop fastening strips can be coupled to bag 12 A and ESD liner 14 . More specifically, one (or more) strip 30 can be coupled (e.g., stitched) to the inside of bag 12 A near open end 12 B and the complementary strip(s) 32 could be coupled to ESD liner 14 at a corresponding position(s). Strip 32 can be adhered to ESD liner 14 using a flexible double-sided tape.

As described, the tote bag assembly is easily opened/closed and provides ESD protection of the contents stored therein. The assembly minimizes the risk of ESD liner tears while providing a reusable and easily-carried tote bag for field transportation of ESD-sensitive ordnance or electronic devices.

Other implementations are within the scope of the following claims. For example, sealed end 14 F of ESD liner 14 could be realized by a fold if ESD liner 14 were made from a single piece of ESD material that was folded at the location of end 14 F. If folded in this fashion, the folded region of ESD liner 14 should be placed in an abutting relationship with the closed end 121 of bag 12 A. Furthermore, the placement of tape 16 is not limited to that shown in FIG. 3 —as other non-limiting options are illustrated in FIGS. 4A-4D.

In FIG. 4A, for example, a single strip of tape 40 incorporating a fibrous web is applied just to sheet 14 A at join region 14 C. FIG. 4B illustrates the use of two individual strips of tape 40 and 42 applied to sheets 14 A and 14 B, respectively, at join region 14 C. FIG. 4C illustrates the use of a strip 44 of a reinforcing material that is a fibrous web material (but not necessarily a tape) that is captured between sheets 14 A and 14 B at join region 14 C during the sealing process.

Yet another option is shown in FIG. 4D where a single strip of reinforcing material, in this case a tape 46 incorporating a fibrous web, is adhered to the outer edges of each of sheets 14 A and 14 B at join region 14 C, and folded onto itself to create a fibrous stitch region. Thus, regardless of how a reinforcing material, such as, for example, a fibrous web, is incorporated in the join region, the fibrous web will define the stitching region for attachment of ESD liner to the outer tote bag.

In certain implementations, it may be possible to eliminate the use of a reinforcing material such as a fibrous web or tape. For example, as illustrated in FIGS. 5 and 6, ESD liner 14 has sheets 14 A and 14 B joined/sealed at join regions 14 C/ 14 D such that wings 14 AW and 14 BW are formed outside of join regions 14 C and 14 D. The completed bag assembly is formed by stitching ESD liner 14 to tote bag 12 using wings 14 AW/ 14 BW as the “stitch-through” regions. Use of hook-and-loop fastening strips (e.g., strips 20 / 22 and 30 / 32 ) would be used as described above to respectively seat/retain the ESD liner in the tote bag, and assure that the ESD liner opens in correspondence with the opening of the tote bag.