GB2392129A - Secure opening of mail items - Google Patents

Secure opening of mail items Download PDF

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Publication number
GB2392129A
GB2392129A GB0128214A GB0128214A GB2392129A GB 2392129 A GB2392129 A GB 2392129A GB 0128214 A GB0128214 A GB 0128214A GB 0128214 A GB0128214 A GB 0128214A GB 2392129 A GB2392129 A GB 2392129A
Authority
GB
United Kingdom
Prior art keywords
container
air pressure
wall
mail item
level lower
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.)
Withdrawn
Application number
GB0128214A
Other versions
GB0128214D0 (en
Inventor
Leslie Lilley
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.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Priority to GB0128214A priority Critical patent/GB2392129A/en
Publication of GB0128214D0 publication Critical patent/GB0128214D0/en
Publication of GB2392129A publication Critical patent/GB2392129A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F7/00—Shielded cells or rooms
    • G21F7/04—Shielded glove-boxes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J21/00—Chambers provided with manipulation devices
    • B25J21/02—Glove-boxes, i.e. chambers in which manipulations are performed by the human hands in gloves built into the chamber walls; Gloves therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43M—BUREAU ACCESSORIES NOT OTHERWISE PROVIDED FOR
    • B43M7/00—Devices for opening envelopes
    • B43M7/02—Devices for both opening envelopes and removing contents
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G29/00—Supports, holders, or containers for household use, not provided for in groups A47G1/00-A47G27/00 or A47G33/00 
    • A47G29/12—Mail or newspaper receptacles, e.g. letter-boxes; Openings in doors or the like for delivering mail or newspapers
    • A47G29/122—Parts, details, or accessories, e.g. signalling devices, lamps, devices for leaving messages
    • A47G2029/1221—Parts, details, or accessories, e.g. signalling devices, lamps, devices for leaving messages comprising means to detect or prevent a terrorist attack, e.g. to detect anthrax-laced letters

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Robotics (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Abstract

An apparatus is described enabling the secure opening of mail items. A container made of transparent material has an inlet 36 through which a mail item may be introduced to the container and thereafter is closed in an airtight sealable manner. Means are provided for opening the mail item within the container, the means being manipulable by a user from outside the container using gloves (50, fig 5) having their wrist portions attached to the wall of the container around two apertures 46.

Description

5 SECURE OPENING OF MAIL ITEMS
1 0 DESCRIPTION
15 The invention relates to the secure opening of mail items, more particularly to apparatus for effecting same.
Throughout this specification and in the claims annexed hereto the term
"mail item" is to be taken to encompass any readily portable envelope or package that may be delivered by mail, by hand, by courier or in any other manner.
20 It is increasingly desirable to effect the opening of mail items in a secure manner which will not lead to the health of the person opening the mail item being endangered injured.
With regret it is noted that recent events show that misguided individuals and terrorists are increasingly making use of mail items for the delivery to their intended targets of chemically and/or biologically active materials as well as other noxious or noisome materials. Exposure to these materials can have a 5 deleterious, perhaps even life threatening, affect upon the intended target.
Objects of this invention include the provision of apparatus operable when used to substantially alleviate or overcome this problem.
In one aspect the invention provides apparatus enabling the secure opening of mail items, the apparatus comprising a container having an inlet 10 through which a mail item may be introduced to the container and which thereafter is closed in an airtight sealable manner, means for opening the mail item within the container, said opening means being manipulable by a user from outside the container and means enabling the content of the mail item to be viewed from outside the container once the mail item has been opened.
15 Desirably, the container is at least partially transparent, Means may be provided enabling manipulation of the mail item and operation of the opening means within the sealed container.
The means enabling opening of the mail item and operation of the opening means comprises at least one resilient material glove fixed or fixable to a 20 sidewall of the container to extend therein, the or each such glove being accessible by a user via an aperture in the wall of the container, the wrist portion of the or each glove being coupled to the wall of the container surrounding its associated aperture in an airtight manner,
With advantage there are provided two said gloves each with an associated aperture.
The gloves may be formed integrally with the wall to surround their associated apertures.
5 In one embodiment the wrist portions of said gloves are adhered to said wall in an airtight manner.
In another embodiment the wrist portions of said gloves are formed integrally with circular members threadably engageable with threaded circular walls surrounding each said aperture.
10 The means for closing the inlet preferably comprises a flap, edges of which flap are attachable to the wall surrounding the inlet in an airtight manner when a mail item has been placed in the container.
The edges of the flap may be attachable to the wall surrounding the inlet by a zipper covered by airtight means when a mail item is in the container.
15 The opening means may comprise a mechanical or electrical (e.g. battery) powered opener for mail items within the container, which mechanical opener is manipulable by a user from outside the container.
The container may be collapsible.
The container preferably has at least some walls which are flexible and 20 incorporates a frame having parts which may be manipulated to move the container between operational and collapsed states.
The parts forming the frame may be spring-loaded and may be located within or outside the container.
Means may be provided for maintaining the air pressure within the container at a level lower than the ambient air pressure.
The means for maintaining the air pressure within the container at a level lower than the ambient air pressure may in one embodiment comprise an outlet 5 formed in a wall of the container coupled to an air pump via a filter for chemical, biological and other noxious or noisome material, the pump being operable to maintain the air pressure within the container at a predetermined level lower than the ambient air pressure.
The pump may be manually operable, or electrically powered, for 10 example, by a battery.
In another embodiment the means for maintaining the air pressure within the container at a level lower than the ambient air pressure comprises an outlet in a wall of the container and a pocket of flexible material on the outside of the wall and attached thereto in an airtight manner to surround the outlet, and spring 15 means operable once an mail item has been placed in the container to bias the pocket away from the container.
In a second aspect the apparatus comprises a container the walls of which are at least in part transparent, the container having an inlet through which a mail item may be introduced to the container and which thereafter is closed in an 20 airtight sealable manner, means for opening the mail item within the container, said opening means being manipulable by a user from outside the container placing his hands within a pair of resilient material gloves fixed or fixable to the inner side of a wall of the container, the gloves being accessible by a user via
associated apertures in the wall of the container, the wrist portion of each glove being coupled to the wall of the container surrounding its associated aperture in an airtight manner, In this aspect the means for closing the inlet comprises a flap, edges of 5 which flap are attachable by a zipper to the wall surrounding the inlet manner when a mail item has been placed in the container, the zipper being covered by airtight means when a mail item is in the container.
Again, the container may be collapsible with at least some of its walls flexible and within which the container incorporates a frame having spring loaded 10 parts which may be manipulated to move the container between operational and collapsed states, the container further comprising means for maintaining the air pressure within the container at a level lower than the ambient air pressure.
In such an arrangement means for maintaining the air pressure within the container at a level lower than the ambient air pressure may comprise an outlet 15 formed in a wall of the container coupled to a mechanical air pump via a filter for chemical, biological or other noxious or noisome material, the pump being operable to maintain the air pressure within the container at a predetermined level lower than the ambient air pressure.
Alternatively, the means for maintaining the air pressure within the 20 container at a level lower than the ambient air pressure comprises an outlet formed in a wall of the container coupled to a electrical battery powered air pump via a filter for chemical, biological and other noxious or noisome material, the
pump being operable to maintain the air pressure within the container at a predetermined level lower than the ambient air pressure.
Again in the alternative, the means for maintaining the air pressure within the container at a level lower than the ambient air pressure comprises an outlet 5 in a wall of the container and a pocket of flexible material on the outside of the wall of and attached thereto in an airtight manner to surround the outlet, and spring means operable, once an mail item has been placed in the container, to bias the pocket away from the container.
The above aspects as well as other features and advantages of the 10 invention will be come apparent for the following description of embodiments of
the invention made with reference to the accompanying drawings, in which: Figure 1 is an orthogonal projection of the container in an operational configuration, Figure 2 shows at A and B detail views of different forms of a support strut 15 shown in Figure 1, Figure 3 is a sectional view on the line lil-lil of Figure 1, showing the container in a collapsed condition, Figure 4 is a view showing a detail of part of the front wall of the container of Figure 1, 20 Figure 5 is a sectional view of a first form of the arrangement drawn on the line V-V of Figure 1, Figure 6 is a sectional view of a second form of the arrangement drawn on the line V-V of Figure 1,
Figure 7 is a sectional view of parts coupled to an outlet in the rear wall of the container, and Figure 8 is a sectional view of alternative parts coupled to the outlet in the rear wall of the container.
5 With reference to the drawings, apparatus embodying the invention comprises a container 10 of clear plastics material having flexible top and bottom walls 14, a flexible front wall 16, a flexible rear wall 18 and rigid opposed sidewalls 20, 22. Container 10 is held in a operational condition by a frame including rigid plastics or metal longitudinal side parts 24 running along the top 10 and bottom of the opposed side walls 20, 22 and rigid plastics or metal cross parts 26 running along the edges of the top and bottom walls 14 adjacent the front and rear walls (16 and 18). The frame is completed by sidewall frame parts 28 hingeably connected at 29 to the upper and lower frame parts formed by the parts 24 and 26.
15 The sidewall frame parts are each in two equal lengths 28A and Z8B hingeably interconnected at 30.
The sidewall frame parts are biased to the positions shown in Figure 1 in one arrangement shown in Figure 2A by elastic members 32 ends of which are attached to the mid points of the parts 28A and 28B.
20 In a second arrangement encompassed by the invention and shown in detail In Figure 2B the hinges 30 are designed to operate as over centre devices the parts 28A and 28B being held in the positions shown by the inherent flexibility of the material forming the top and bottom and end walls of the container.
The container 10 may be collapsed from the position shown in Figure 1 to that shown in Figure 3 (a sectional view drawn on the line lil-lil of Figure 1) by simply manually biasing the hinges 30 on opposite sides of the front and rear walls 14 and 16 towards one another, against the action of the elastic parts 32 or 5 the inherent bias of the container materials, to bring the side walls 20, 22 adjacent one another in which position they are held making use of two plastics or metal "[" clips 34.
The front wall 16 is pierced by an aperture 36 as shown in Figure 4 which is a detail partial face view of the wall 16. Aperture 36 is closable by a flap 38 of 10 flexible plastics material. Edges of flap 38 may be attached to the wall 16 about the aperture 36 by means of a zipper 40 cooperating parts of which are formed on the flap 38 and wall 1 6.when the container is in the condition shown in Figure 1. The edges of flap 38 also carry a sealing strip 42 which operationally covers the zipper 40 and after for example moistening forms an airtight seal with the wall 15 16 adjacent the flap 38.
As an alternative to the use of a zipper it may be replaced by to strips of cooperating hook and eye material formed on the flap and wall respectively.
Two apertures 46 through which a user may pass his hands pierce sidewall 22. On the outer surface of wall 22 around each aperture 46 is attached 20 the wrist portion 48 of a flexible natural or synthetic glove 50 which extendsthrough the aperture into the container 10.
The wrist portion 48 of each glove 50 may simply be adhered to the sidewall 22 as shown at 52 in scrap detail view Figure 5.
To allow for the replacement of the gloves 50 the arrangement shown in scrap detail view Figure 6 may be used. In this arrangement the wrist portions 48 of the gloves pass through rigid plastics rings 56 to which their extremities are adhered by any suitable adhesive as shown at 58.The rings 56 are threaded at 5 56A and shaped to engage the threaded outer part 60A of a circular land 60 carried on the outer surface of wall 22 to surround the aperture 46.
The sidewall 22 is also pierced by an outlet 66, see detail scrap view Figure 7, airtight fixed to a pipe 68 itself coupled to a filter 70 for chemical, biological and other noxious or noisome materials. Air from the erect container 10 may be drawn through the pipe 68 and filter 70 by a pump 72 powered by a mechanical handle or a battery illustrated schematically at 74.
Equally preferred is the arrangement shown in Figure 8 in which outlet 66 links the container 10 to a circular in section, flexible, plastics material, pocket 80.
The open end of pocket 80 is adhered to the outer surface of wall 20 at 82 and a 15 rigid plastics ring 84 is positioned as shown within the pocket 80 to surround the outlet 66. The end of pocket 80 remote from outlet 66 has within it a rigid plastics disc 86 and a spring 88 is provided to act between the ring 84 and disc 86 to urge in use the pocket 80 to the fully open position shown.
Within the container there is provided any suitable mechanically or 20 electrical battery powered opener 90 for mail items 92 placed within the container 10. To use the apparatus the clips 34 are removed allowing the frame parts to be manipulated to bring the container to the condition shown in Figure 1. A mail
item 92 is passed through the aperture 36. Thereafter the flap 38 is closed (whilst the disc 86 - if provided - is pushed toward the ring 84). After closure of flap 38 the pump 72 is operated (or the disc 86 released) such that the air pressure in container is slightly below the ambient air pressure ensuring that any tendency 5 for air to escape the container is prevented.
The user then inserts his/her hands in the gloves 50 and manipulates the opener 90 to open the mail item 92.
The content of the mail item 92 can be seen by the user through the transparent walls of the container and should he/she note any material which 10 may be of a chemical, biological, noxious or noisome nature the appropriate authorities may be summoned without opening the container.
If the content of the mail item appears on inspection to be safe it may simply be removed from the container 10 by opening the flap 38 allowing access to be made to the interior of the container.
15 After use the container may be collapsed by moving the hinges 30 toward one another and pressing the sidewalls towards on another until the clips 34 may be positioned thereon.
It will be appreciated that the described arrangements provide apparatus enabling the secure opening of mail items protecting the user from contamination 20 with and chemical, biological and other noxious or noisome material.
It will further be seen that various modifications may be made to the arrangements described without departing from the spirit and scope of the invention as defined by the appended claims.
For example any suitable material may be substituted for the materials described. Again, the plastics material forming the container need not be wholly transparent but may be if desired translucent or opaque and be provided with 5 transparent windows or ports through which the content of any mail item in the container may be viewed.

Claims (1)

1. Apparatus enabling the secure opening of mail items, the apparatus comprising a container having an inlet through which a mail item may be 5 introduced to the container and which thereafter is closed in an airtight sealable manner, means for opening the mail item within the container, said opening means being manipulable by a user from outside the container and means enabling the content of the mail item to be viewed from outside the container once the mail item has been opened.
2. Apparatus as claimed in Claim 1, wherein the container is collapsible.
3. Apparatus as claimed in Claim 2, wherein there is provided means enabling manipulation of the mail item and operation of the opening means within 15 the sealed container.
4. Apparatus as claimed in Claim 3, wherein the means enabling opening of the mail item and operation of the opening means comprises at least one resilient material glove fixed or fixable to a sidewall of the container and accessible by a 20 user via an aperture in the wall of the container, the wrist portion of the or each glove being coupled to the wall of the container surrounding its associated aperture in an airtight manner,
5. Apparatus as claimed in Claim 4, wherein there is provided two said gloves each with an associated aperture.
6. Apparatus as claimed in Claim 5, wherein said gloves are formed 5 integrally with the wall to surround their associated apertures.
7. Apparatus as claimed in Claim 6, wherein the wrist portions of said gloves are adhered to said wall in an airtight manner.
10 8. Apparatus as claimed in Claim S. wherein the wrist portions of said gloves are formed integrally with circular members threadably engageable with threaded circular walls surrounding each said aperture.
9. Apparatus as claimed in Claim 4, wherein the means for closing the inlet 15 comprises a flap, edges of which flap are attachable to the wall surrounding the inlet in an airtight manner when a mail item has been placed in the container.
10. Apparatus as claimed in Claim 9, wherein said edges of said flap are attachable to the wall surrounding the inlet by means of a zipper covered by 20 airtight means when a mail item is in the container.
11. Apparatus as claimed in Claim 4, wherein the opening means comprises a mechanical or electrical [e.g. battery] powered opener for mail items within the
container, which mechanical opener is manipulable by a user from outside the container. 12. Apparatus as claimed in Claim 4, wherein the container is collapsible.
13. Apparatus as claimed in Claim 12, wherein the container has at least some walls which are flexible and incorporates a frame having parts which may be manipulated to move the container between operational and collapsed states.
10 14. Apparatus as claimed in Claim 13, wherein the parts forming the frame may be spring loaded. i 15. Apparatus as claimed in Claim 14, wherein the frame parts are within the container walls.
16. Apparatus as claimed in Claim 14, wherein the frame parts are outside the container walls.
17. Apparatus as claimed in Claim 14, further including means for maintaining 20 the air pressure within the container at a level lower than the ambient air pressure.
18. Apparatus as claimed in Claim 17, wherein said means for maintaining the air pressure within the container at a level lower than the ambient air pressure comprises an outlet formed in a wall of the container coupled to an air pump via a filter for chemical, biological and other noxious or noisome material, the pump 5 being operable to maintain the air pressure within the container at a predetermined level lower than the ambient air pressure.
19. Apparatus as claimed in Claim 18, wherein said pump is manually operable. 20. Apparatus as claimed in Claim 18, wherein said pump is electrically operable. 21. Apparatus as claimed in Claim 20, wherein an electrical battery powers 15 said pump.
22. Apparatus as claimed in Claim 17, wherein said means for maintaining the air pressure within the container at a level lower than the ambient air pressure comprises an outlet in a wall of the container and a pocket of flexible material on 20 the outside of wall thereof and attached thereto in an airtight manner to surround the outlet, and spring means operable once an mail item has been placed in the container to bias the pocket away from the container.
23. Apparatus enabling the secure opening of mail items, the apparatus comprising a container the walls of which are at least in part transparent, the container having an inlet through which a mail item may be introduced to the container and which thereafter is closed in an airtight sealable manner, 5 mechanical means for opening the mail item within the container, said opening means being manipulable by a user from outside the container placing his hands within a pair of resilient material gloves fixed or fixable to the inner side of a wall of the container, the gloves being accessible by a user via associated apertures in the wall of the container, the wrist portion of each glove being coupled to the 10 wall of the container surrounding its associated aperture in an airtight manner, 24. Apparatus as claimed in Claim 23, wherein the means for closing the inlet comprises a flap edges of which are attachable by a zipper to the wall surrounding the inlet in an airtight manner when a mail item has been placed in 15 the container, the zipper being covered by airtight means when a mail item is in the container.
25. Apparatus as claimed in Claim 24, wherein the container is collapsible, at least some walls of which are flexible and within which the container incorporates 20 a frame having spring loaded parts within the container which may be manipulated to move the container between operational and collapsed states, the container further comprising means for maintaining the air pressure within the container at a level lower than the ambient air pressure.
27. Apparatus as claimed in Claim 26, wherein said means for maintaining the air pressure within the container at a level lower than the ambient air pressure comprises an outlet formed in a wall of the container coupled to a mechanical air 5 pump via a filter for chemical, biological or other noxious or noisome material, the pump being operable to maintain the air pressure within the container at a predetermined level lower than the ambient air pressure.
28. Apparatus as claimed in Claim 26, wherein said means for maintaining the 10 air pressure within the container at a level lower than the ambient air pressure comprises an outlet formed in a wall of the container coupled to a electrical battery powered air pump via a filter for chemical, biological or other noxious or noisome material, the pump being operable to maintain the air pressure within the container at a predetermined level lower than the ambient air pressure.
15 29. Apparatus as claimed in Claim 26, wherein said means for maintaining the air pressure within the container at a level lower than the ambient air pressure comprises an outlet in a wall of the container and a pocket of flexible material on the outside of the wall of the attached thereto in an air-tight manner to surround the outlet, and spring means operable, once an mail item has been placed in the 20 container, to bias the pocket away from the container.
GB0128214A 2001-11-24 2001-11-24 Secure opening of mail items Withdrawn GB2392129A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0128214A GB2392129A (en) 2001-11-24 2001-11-24 Secure opening of mail items

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0128214A GB2392129A (en) 2001-11-24 2001-11-24 Secure opening of mail items

Publications (2)

Publication Number Publication Date
GB0128214D0 GB0128214D0 (en) 2002-01-16
GB2392129A true GB2392129A (en) 2004-02-25

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2444762A (en) * 2006-04-25 2008-06-18 Denis Parton Detachable anti-contamination mail bag
CN102930910A (en) * 2011-08-09 2013-02-13 上海原子科兴药业有限公司 Slot type radioactive drug subpackaging box
EP2832506A1 (en) * 2013-07-30 2015-02-04 OWR GmbH Foldable glove box with a housing which is hermetically sealed off from the environment
CN104525923A (en) * 2015-01-09 2015-04-22 无锡职业技术学院 Battery grade lithium metal glove box with fully enclosed metal structure
DE102018100116A1 (en) * 2018-01-04 2019-07-04 Stephan Becher bounding

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1411256A (en) * 1972-10-02 1975-10-22 Sinloihi Co Ltd Radioisotope handling system
US4156146A (en) * 1976-06-07 1979-05-22 Hitachi Cable, Ltd. Arrangement for replacably mounting operating member on a radiation shielding box
US5520449A (en) * 1995-03-24 1996-05-28 Klak; Joseph V. Asbestos glove bag
GB2384743A (en) * 2001-10-23 2003-08-06 Joseph William Jones Assembly for the safe opening of mail

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1411256A (en) * 1972-10-02 1975-10-22 Sinloihi Co Ltd Radioisotope handling system
US4156146A (en) * 1976-06-07 1979-05-22 Hitachi Cable, Ltd. Arrangement for replacably mounting operating member on a radiation shielding box
US5520449A (en) * 1995-03-24 1996-05-28 Klak; Joseph V. Asbestos glove bag
GB2384743A (en) * 2001-10-23 2003-08-06 Joseph William Jones Assembly for the safe opening of mail

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2444762A (en) * 2006-04-25 2008-06-18 Denis Parton Detachable anti-contamination mail bag
CN102930910A (en) * 2011-08-09 2013-02-13 上海原子科兴药业有限公司 Slot type radioactive drug subpackaging box
CN102930910B (en) * 2011-08-09 2015-05-13 上海原子科兴药业有限公司 Slot type radioactive drug subpackaging box
EP2832506A1 (en) * 2013-07-30 2015-02-04 OWR GmbH Foldable glove box with a housing which is hermetically sealed off from the environment
CN104525923A (en) * 2015-01-09 2015-04-22 无锡职业技术学院 Battery grade lithium metal glove box with fully enclosed metal structure
CN104525923B (en) * 2015-01-09 2016-04-27 无锡职业技术学院 A kind of totally enclosed type metal structure Battery grade lithium metal glove box
DE102018100116A1 (en) * 2018-01-04 2019-07-04 Stephan Becher bounding

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