WO1998013273A1 - Procede de fabrication et dispositifs utilisant des events - Google Patents

Procede de fabrication et dispositifs utilisant des events Download PDF

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Publication number
WO1998013273A1
WO1998013273A1 PCT/US1997/017601 US9717601W WO9813273A1 WO 1998013273 A1 WO1998013273 A1 WO 1998013273A1 US 9717601 W US9717601 W US 9717601W WO 9813273 A1 WO9813273 A1 WO 9813273A1
Authority
WO
WIPO (PCT)
Prior art keywords
vent
substrate
holes
gor
tex
Prior art date
Application number
PCT/US1997/017601
Other languages
English (en)
Inventor
Terry J. Wickland
Original Assignee
Nuclear Filter Technology, Inc.
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 Nuclear Filter Technology, Inc. filed Critical Nuclear Filter Technology, Inc.
Priority to AU46044/97A priority Critical patent/AU4604497A/en
Publication of WO1998013273A1 publication Critical patent/WO1998013273A1/fr
Priority to US13/373,755 priority patent/US8758488B1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B32B27/322—Layered products comprising a layer of synthetic resin comprising polyolefins comprising halogenated polyolefins, e.g. PTFE
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D51/00—Closures not otherwise provided for
    • B65D51/16—Closures not otherwise provided for with means for venting air or gas
    • B65D51/1605—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior
    • B65D51/1616—Closures not otherwise provided for with means for venting air or gas whereby the interior of the container is maintained in permanent gaseous communication with the exterior by means of a filter
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0213—Venting apertures; Constructional details thereof
    • H05K5/0215—Venting apertures; Constructional details thereof with semi-permeable membranes attached to casings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B2037/0092—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding in which absence of adhesives is explicitly presented as an advantage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/08—Reinforcements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/31—Heat sealable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/40—Closed containers
    • B32B2439/60—Bottles

Definitions

  • the present invention is directed to vents, methods of fabricating vents and devices employing vents. More particularly, the present invention is related to vents which prohibit passage of liquids therethrough and allow passage of gases, wherein the vents arc of particular interest with respect to venting containers having fluids therein which are hazardous.
  • plutonium in aqueous hydrochloric acid or nitric acid solutions is plutonium in aqueous hydrochloric acid or nitric acid solutions.
  • aqueous hydrochloric acid or nitric acid solutions As pipes and tanks containing these solutions are drained, they are generally drained into 1 gallon, high density, polyethylene bottles with polypropylene caps for interim storage until permanent solidification or immobilization may be conducted.
  • the solutions contain as much as 140 g/1 of plutonium which has the radiolytic effect of generating hydrogen gas. Hydrogen gas in the bottles accelerates embrittlement of the bottles which, over time, can lead to failure of the bottles. Since plutonium is considered to be highly carcinogenic, leakage of plutonium into the environment surrounding the bottles poses a danger which must be avoided.
  • GOR-TEX* is impervious to liquids but pervious to gases. It has proven difficult to select an adhesive for securing the GOR-TEX* material to the caps because many adhesives tend to degrade in the presence of aqueous hydrochloric and nitric acid solutions containing plutonium.
  • vents which are gas permeable and liquid impermeable; to provide a new and improved method of making such vents, and to provide new and improved structures utilizing the advantages of such vents.
  • the present invention is directed to a lamination comprising polytetrafiuoroethylene (PTFE) which is thermally bonded to a stiff, perforated substrate of resinous material.
  • PTFE polytetrafiuoroethylene
  • a method of making a composite structure including a perforated substrate of resinous material and a layer of polytetrafiuoroethylene (PTFE) comprises thermally bonding the layer of PTFE to the perforated substrate.
  • PTFE polytetrafiuoroethylene
  • the perforated substrate is porous and, in still a further aspect of the invention, the perforated substrate has discrete passages therethrough.
  • the vent is fabricated in a closure wherein the closure is a bottle cap or where the enclosure is an assembly for venting flexible containers such as bags.
  • a vent configured in accordance with the principles of the present invention is used housings, such as the housings for battery cover electrical transformers to vent potentially explosive gases from the housings.
  • Figure 1 is a perspective view showing a polymer material substrate and a layer of polytetrafiuoroethylene (PTFE);
  • PTFE polytetrafiuoroethylene
  • Figure 2 is a side elevation showing the PTFE layer being thermally bonded to the perforated substrate
  • Figure 3 is a side elevation showing gas or vapors passing through the lamination of Figure 2 and liquids being repelled by the lamination;
  • Figure 4 is a side elevation of a bottle closure or cap utilizing the principles of the present invention as shown in Figure 3;
  • Figure 5 is a bottom view of the closure or cap;
  • Figure 6 is a top view of the closure or cap of Figures 4 and 5;
  • Figure 7 is a side view of a container utilizing the cap of Figures 4-6 which employs the vent of Figure 3, fabricated in accordance with the methods of Figures 1 and 2;
  • Figure 8 is a side elevation of a vent assembly utilizing the vent of Figure 3;
  • Figure 9 is a side, perspective view of a bag employing the vent assembly of Figure 8;
  • Figure 10 is a side elevation of a housing for an electrical transformer employing a vent such as the vent of Figure 3;
  • Figure 11 is a perspective view showing a electric iron which is used to thermally stake a layer of PTFE over a perforated portion of a large container cap;
  • Figure 12 is a view similar to Figure 11, but showing the electric iron applying heat to the PTFE layer;
  • Figure 13 is a side elevation showing the top portion of the cap of Figures 11 and 12 with a perforated cover snap fitted over the PTFE layer;
  • Figure 14 is a bottom view looking inside of a small cap comprising another embodiment of a cap in accordance with the present invention.
  • Figure 15 is a side elevation of the cap of Figure 14.
  • a substrate 20 of a polymer material such as polyurethane, polypropylene, polyethylene, fiber glass reinforced polyethylene or other polymer materials.
  • the substrate 20 is perforated by at least one discrete through hole 22 or by an array 24 of discrete through holes.
  • the perforated substrate 20 is in the form of a stiff porous structure without discrete through holes, wherein fluids can migrate from a first side 26 to a second side 28 of the stiff substrate.
  • the substrate 20 is stiff as opposed to flexible and the polymer material is a unitary mass rather than a stranded fabric, the substrate 20 preferably having the configuration of a plate.
  • GOR-TEX* membranes are available from G.L. Gore and Associate, Inc., Elkton, MD., and are discussed in U.S. Patent 5,264,276, issued November 23, 1993, incorporated herein by reference.
  • the bottle cap 40 is made up of a relatively stiff polymer material such as polypropylene and includes top 42 and a cylindrical rim 44 having threads 46 for tight engagement with the neck of a bottle.
  • the top 42 has an array 47 of discrete holes 48 therethrough.
  • Heat bonded to the inner surface 49 of the top 42 is a GOR-TEX* membrane 52 and surrounding the GOR-TEX* membrane 52 is an annular lip 54.
  • the cap 40 is threaded onto the neck 56 of a polyethylene container 58 which contains material therein in the liquid phase 34 and the gas phase 33.
  • the GOR-TEX* membrane 52 allows the gas phase 33 to vent or leave the container 58 while preventing the liquid phase 34 from leaving the container. Moreover, the GOR-TEX* membrane 52 prevents liquid from outside the container 58 from entering the container while allowing the relatively free exchange of air, or another surrounding gas, into and out of the container 58.
  • vent configuration 70 has the general configuration of the vent assembly disclosed in U.S. Patent 4,957,518, issued September 18, 1990, and incorporated herein by reference.
  • Vent assembly 70 is used to vent a bag 72 which contains radioactive waste materials or other hazardous waste materials.
  • the vent assembly generally comprises a stiff but resilient base 74 having discrete holes 75 therein and a stiff but resilient cover 76 having discrete holes 77 therein.
  • the cover 76 snaps into engagement with a rim on the walls of a chamber 78 containing a disk 79 of filter materials such as carbon-carbon filter material.
  • a GOR-TEX* membrane 80 is interposed between the interior 81 of the bag 72 and the surrounding environment 82.
  • the GOR-TEX* membrane 80 is heat bonded to the bottom surface 83 of the cap 76 to cover the discrete holes 77.
  • a GOR-TEX* membrane 97 is bonded to the base 74 between the filter element 79 and the base.
  • a GOR-TEX* membrane 90 is thermally bonded to the bottom surface 92 of the base 74.
  • the GOR-TEX* membrane 94 is thermally bonded to the upper surface 96 of the cover 76 in order to overlie the discrete through holes 77.
  • the GOR-TEX* membranes 80, 90 and 94 may all be employed, only the membranes 90 and 92 may be used or just the membranes 80 and 94 may be used.
  • an advantage of having at least one of the membranes 80, 90 and 94 thermally bonded to the base 74 or cover 76 is that the membranes are bonded in areas 98 between the discrete through holes 75 or areas 99 between the through holes 77. Such bonding over the entire interface substantially enhances the mechanical strength of the vent assembly. This is accomplished without depositing an adhesive in the areas 98 and 99 between the discrete through holes 77 and 75 which adhesive might interfere with or cover the openings of the holes.
  • FIG 10 there is shown another embodiment of the invention, wherein a battery cover transformer housing 100 of a polypropylene
  • -saierjal reinforced with fiberglass has a perforated area 102 with discrete holes 104 therethrough, which perforated area is covered by a GOR-TEX* membrane 106 that is thermally bonded to the perforated area. Accordingly, excessive pressure buildup within the transformer housing 100 due to generation of dangerous gases 108 is avoided while retaining dielectric liquid 110 within the transformer housing.
  • FIG. 11-13 there is shown a preferred method of heat bonding a GOR-TEX* membrane 200 to the inside surface 202 of the top 204 of a screw-on cap 206 in order to cover perforations 208.
  • the inside surface 202 of the cap top 204 includes a first rib 209.
  • the first rib 209 is surrounded by a second rib 210 which creates an annular channel 212 around the perforations 208.
  • the perforations 208 are in a raised area 214 of the top 204 so that there is a slight air gap 216 between the GOR-TEX* layer 200 and the inside surface 218 of the top 204 of the cap.
  • the GOR-TEX* layer 200 has a peripheral portion 220 which is secured in the annular trough 210 by heal staking with an iron 225 (Figs. 11 and 12).
  • the iron 225 Figs. 11 and 12.
  • 225 includes a head 228 that has a projecting rim 230 with an annular edge 232 which corresponds in diameter to the annular trough 210.
  • annular edge 232 of the heated head 228 when the annular edge 232 of the heated head 228 is pressed against the peripheral portion 220 of the GOR-TEX* layer 200, it fuses with the polypropylene to form a unitary, sealed seam which is impenetrable by liquid or vapor.
  • a perforated cover 250 with perforations 252 therethrough is then snap-fitted over the GOR-TEX* layer 200 to protect the GOR-TEX* layer and to prevent touching of the GOR-TEX* layer by fingers which could damage the layer or deposit oil or some other contaminant on the layer.
  • the perforated cover 250 has an annular side flange 254 which snaps beneath an annular shoulder 256 which is unitary with the top 204 of the cover.
  • FIG. 14 and 15 there is shown a smaller diameter version 206' of the cap 206 of Figures 11-13.
  • similar primed reference numerals identify structure similar to the structure in Figures 11-13.
  • the important similar feature is the GOR-TEX* membrane 200' that is thermally bonded in the circular channel 210 by the annular head 230 of an iron 225.
  • a cover such as the cover 250 is not employed because the cap is relatively small. It is, however, within the scope of this invention to utilize a perforated cover, such as the perforated cover 250, shown in Figure 13. Without further elaboration, it is believed that one skilled in the art can, using the preceding description, utilize the present invention to its fullest extent. The following preferred specific embodiment is, therefore, to be construed as merely illustrative, and not limitative of the remainder of the disclosure in any way whatsoever.
  • the membranes are mounted in pressure equalization caps which provides gas diffusion, yet retain liquids in the bottles in the event that the bottles capsize.
  • the GOR-TEX* membranes are thermally bonded to the inside of the cap in accordance with the present invention and provide caps which are physically durable and chemically resistant to the severe acid conditions of the liquid waste in the bottles.
  • GOR-TEX* membranes thermally sealed to the polypropylene caps tolerate acidic vapors and withstand liquid head pressure of about 0.92 psi after 40 days of exposure to the acids within the bottles.
  • the pressure equalization vents comprised of GOR-TEX* thermally bonded to the interior of polyurethane caps on polyethylene bottles containing plutonium in acid solutions increases the use for life of the bottles.
  • the GOR-TEX* membranes which are permeable to gases, yet impermeable to liquids, allow hydrogen to diffuse at a rate well above the TRUPACT- ⁇ minimum requirement of 1.9 E-6 mole/mol frac sec.
  • GOR-TEX* pressure equalization vents thermally bonded to the caps, assure ambient pressure within the polyethylene bottles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne des évents pour récipients, comportant une partie substrat perforée (20) constituée d'un matériau polymère sur lequel une membrane perméable au gaz (30) est thermocollée. La liaison par procédé thermique (31) se fait directement et sans adhésif de sorte qu'à l'intérieur des récipients (58), il n'y pas de matière adhésive susceptible d'être dégradée par des produits chimiques contenus dans les récipients. Il n'y a également aucune possibilité pour qu'un adhésif vienne faire obstacle ou bloquer les perforations traversant le substrat.
PCT/US1997/017601 1996-09-27 1997-09-29 Procede de fabrication et dispositifs utilisant des events WO1998013273A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU46044/97A AU4604497A (en) 1996-09-27 1997-09-29 Method of fabricating and devices employing vents
US13/373,755 US8758488B1 (en) 1997-09-29 1999-03-26 Method of fabricating and devices employing vents

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US72196796A 1996-09-27 1996-09-27
US08/721,967 1996-09-27

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/373,755 Continuation US8758488B1 (en) 1997-09-29 1999-03-26 Method of fabricating and devices employing vents

Publications (1)

Publication Number Publication Date
WO1998013273A1 true WO1998013273A1 (fr) 1998-04-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1997/017601 WO1998013273A1 (fr) 1996-09-27 1997-09-29 Procede de fabrication et dispositifs utilisant des events

Country Status (2)

Country Link
AU (1) AU4604497A (fr)
WO (1) WO1998013273A1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000049842A1 (fr) * 1999-02-18 2000-08-24 Telefonaktiebolaget Lm Ericsson Logement pour appareil electrique portable
WO2000034132A3 (fr) * 1998-12-10 2000-11-09 Ron Sturk Fermetures possedant des moyens de ventilation pour l'ecoulement et la pression
WO2004005153A1 (fr) * 2002-07-04 2004-01-15 Ernest George Simpkins Element de fermeture etanche
WO2004041709A2 (fr) * 2002-10-30 2004-05-21 Entegris, Inc. Dispositif de ventilation pour fut
US6743088B2 (en) * 1999-07-16 2004-06-01 Robert F. Closkey Apparatus and method for minimizing liquid infiltration into subterranean openings
EP1547690A1 (fr) * 2003-12-12 2005-06-29 Becton, Dickinson and Company Procédé de fixation d'une membrane par thermofusion sans adhésif
FR2873355A1 (fr) * 2004-07-21 2006-01-27 Manuf Generale De Joints Sa Joint de degazage pour bouchons
US7201287B2 (en) 2002-10-30 2007-04-10 Entegris, Inc. Drum vent
EP1858309A1 (fr) * 2006-05-15 2007-11-21 Schreiner Group GmbH & Co. KG Dispositif d'aération et sa méthode de fabrication et structure d'un élément de compensation de pression
WO2016130906A1 (fr) * 2015-02-13 2016-08-18 W. L. Gore & Associates, Inc. Appareil de ventilation
US9845181B2 (en) 2010-11-22 2017-12-19 Greif International Holding Bv Vented container closure
CN107592754A (zh) * 2017-10-24 2018-01-16 惠州市晶宏电子设备有限公司 一种塞孔板塞孔用万能导气板及制作方法
WO2020236823A1 (fr) * 2019-05-23 2020-11-26 Westinghouse Electric Company Llc Système de ventilation passive de gaz hydrogène et oxygène stœchiométriques produits dans un conteneur blindé

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3951293A (en) * 1974-01-24 1976-04-20 Riedel-De Haen Aktiengesellschaft Gas-permeable, liquid-tight closure
US4756852A (en) * 1986-08-04 1988-07-12 Nuclear Packaging, Inc. Method of installing a vent in a nuclear waste storage system
US4934545A (en) * 1989-01-19 1990-06-19 Abbott Laboratories Closure with microbial filter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3951293A (en) * 1974-01-24 1976-04-20 Riedel-De Haen Aktiengesellschaft Gas-permeable, liquid-tight closure
US4756852A (en) * 1986-08-04 1988-07-12 Nuclear Packaging, Inc. Method of installing a vent in a nuclear waste storage system
US4934545A (en) * 1989-01-19 1990-06-19 Abbott Laboratories Closure with microbial filter

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000034132A3 (fr) * 1998-12-10 2000-11-09 Ron Sturk Fermetures possedant des moyens de ventilation pour l'ecoulement et la pression
GB2359071A (en) * 1998-12-10 2001-08-15 Ron Sturk Flow vented and pressure vented closures
GB2359071B (en) * 1998-12-10 2002-05-29 Ron Sturk Flow vented and pressure vented closures
US6347034B1 (en) 1999-02-18 2002-02-12 Telefonaktiebolaget Lm Ericsson (Publ) Arrangement at a portable electric apparatus
WO2000049842A1 (fr) * 1999-02-18 2000-08-24 Telefonaktiebolaget Lm Ericsson Logement pour appareil electrique portable
US6743088B2 (en) * 1999-07-16 2004-06-01 Robert F. Closkey Apparatus and method for minimizing liquid infiltration into subterranean openings
WO2004005153A1 (fr) * 2002-07-04 2004-01-15 Ernest George Simpkins Element de fermeture etanche
CN100343137C (zh) * 2002-10-30 2007-10-17 诚实公司 鼓桶的通气孔
WO2004041709A3 (fr) * 2002-10-30 2004-10-28 Entegris Inc Dispositif de ventilation pour fut
US6883675B2 (en) * 2002-10-30 2005-04-26 Entegris, Inc. Drum vent
US7201287B2 (en) 2002-10-30 2007-04-10 Entegris, Inc. Drum vent
WO2004041709A2 (fr) * 2002-10-30 2004-05-21 Entegris, Inc. Dispositif de ventilation pour fut
EP1547690A1 (fr) * 2003-12-12 2005-06-29 Becton, Dickinson and Company Procédé de fixation d'une membrane par thermofusion sans adhésif
US7404873B2 (en) 2003-12-12 2008-07-29 Becton, Dickinson And Company Membrane attachment process
FR2873355A1 (fr) * 2004-07-21 2006-01-27 Manuf Generale De Joints Sa Joint de degazage pour bouchons
WO2006018556A1 (fr) * 2004-07-21 2006-02-23 Manufacture Generale De Joints Joint de degazage pour bouchons
EP1858309A1 (fr) * 2006-05-15 2007-11-21 Schreiner Group GmbH & Co. KG Dispositif d'aération et sa méthode de fabrication et structure d'un élément de compensation de pression
US9845181B2 (en) 2010-11-22 2017-12-19 Greif International Holding Bv Vented container closure
CN107278168A (zh) * 2015-02-13 2017-10-20 W.L.戈尔及同仁股份有限公司 通风口装置
WO2016130906A1 (fr) * 2015-02-13 2016-08-18 W. L. Gore & Associates, Inc. Appareil de ventilation
KR20190060892A (ko) * 2015-02-13 2019-06-03 더블유.엘. 고어 앤드 어소시에이트스, 인코포레이티드 벤팅 장치
KR102022225B1 (ko) * 2015-02-13 2019-09-17 더블유.엘. 고어 앤드 어소시에이트스, 인코포레이티드 벤팅 장치
US10434742B2 (en) 2015-02-13 2019-10-08 W. L. Gore & Associates, Inc. Venting apparatus
CN107278168B (zh) * 2015-02-13 2020-09-15 W.L.戈尔及同仁股份有限公司 通风口装置
EP3825104A1 (fr) * 2015-02-13 2021-05-26 W.L. Gore & Associates Inc. Appareil de ventilation
CN107592754A (zh) * 2017-10-24 2018-01-16 惠州市晶宏电子设备有限公司 一种塞孔板塞孔用万能导气板及制作方法
CN107592754B (zh) * 2017-10-24 2023-08-15 惠州市晶宏电子设备有限公司 一种塞孔板塞孔用万能导气板及制作方法
WO2020236823A1 (fr) * 2019-05-23 2020-11-26 Westinghouse Electric Company Llc Système de ventilation passive de gaz hydrogène et oxygène stœchiométriques produits dans un conteneur blindé

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