DE4315701A1 - Safety valve made of plastic for containers - Google Patents

Safety valve made of plastic for containers

Info

Publication number
DE4315701A1
DE4315701A1 DE19934315701 DE4315701A DE4315701A1 DE 4315701 A1 DE4315701 A1 DE 4315701A1 DE 19934315701 DE19934315701 DE 19934315701 DE 4315701 A DE4315701 A DE 4315701A DE 4315701 A1 DE4315701 A1 DE 4315701A1
Authority
DE
Germany
Prior art keywords
valve
channel
ventilation
aeration
container
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.)
Granted
Application number
DE19934315701
Other languages
German (de)
Other versions
DE4315701C2 (en
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.)
Protechna SA
Original Assignee
Schuetz Werke Co KG GmbH
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 Schuetz Werke Co KG GmbH filed Critical Schuetz Werke Co KG GmbH
Priority to DE19934315701 priority Critical patent/DE4315701C2/en
Publication of DE4315701A1 publication Critical patent/DE4315701A1/en
Application granted granted Critical
Publication of DE4315701C2 publication Critical patent/DE4315701C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • B65D51/1633—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element
    • B65D51/1644—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element the element being a valve
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/18—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on either side
    • F16K17/19—Equalising valves predominantly for tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K24/00—Devices, e.g. valves, for venting or aerating enclosures

Abstract

The safety valve (1), designed as an aeration and venting valve, for tanks, drums, pallet containers and similar containers made of plastic for transporting and for storing liquids consists of a valve stopper (2) for closing the aeration and venting bung (6) or the filling and emptying bung of a container (5), a membrane (3) and a clamping ring (4). The components (2-4) of the valve (1) are produced as plastic injection-moulded parts. The valve stopper (2) has a central aeration channel (8) which is coaxial with the stopper axis (7-7) and a venting channel (9) which is arranged concentrically to said aeration channel and is designed as an annular channel. The aeration channel (8) and the venting channel (9) open out into aeration and venting apertures (10) in the upper section of the valve stopper (2). The disc-shaped membrane (3) is fitted with a central flap (11) for opening the aeration channel (8) when there is low pressure in the container and with an outer annular section (12) for opening the venting channel (9) when there is overpressure in the container. By means of the clamping ring (4), which is clipped onto the valve stopper (2), the membrane (3) of the valve (1) is held under prestress on a valve seat (13) at the outlet end (14) of the aeration channel (8) in the valve stopper (2). The clamping ring (4) has an aeration aperture (15) which is coaxial with the aeration channel (8) in the valve stopper (2) and an annular venting aperture (16) which is coaxial with the venting channel (9) in the stopper (2). <IMAGE>

Description

Die Erfindung betrifft Sicherheitsventile aus Kunststoff für Behälter zum Transport und zur Lagerung von Flüssigkeiten mit einer in einem Gehäuse eingebauten Membran zur Druckentlastung bei Überdruck im Behälter.The invention relates to safety valves made of plastic for containers for the transport and storage of liquids with a membrane built into a housing Pressure relief in the event of overpressure in the tank.

Derartige Sicherheitsventile, die bevorzugt bei Kunststoffbehältern wie Tanks, Fässern usw. eingesetzt werden, genügen nicht den hohen Sicherheitsanforderungen, da diese Ventile aufgrund ihrer Funktionsweise ausschließlich dazu bestimmt sind, einen Überdruck, der z. B. durch aus einer Flüssigkeit unter Wärmeeinwirkung entweichende Gase in einem geschlossenen Behälter entsteht, abzubauen. Der Ausgleich eines Unterdrucks, der z. B. bei einer Abfüllung von Behältern mit heißen Flüssigkeiten beim Abkühlen derselben auftreten und im Extremfall eine Implosion eines Behälters bewirken kann, ist mit dem gattungsgemäßen Sicherheitsventil nicht möglich. Ein weiterer Nachteil des bekannten Sicherheitsventils besteht darin, daß die Ventilmembran durch beim Transport oder beim Umkippen von Behältern hochschwappende klebrige Flüssigkeit verklebt und sich bei Überdruck im Behälter nicht mehr öffnet.Such safety valves, which are preferred Plastic containers such as tanks, drums etc. are used, do not meet the high security requirements as these Valves only because of their functionality are determined, an overpressure z. B. by from one Gases escaping liquid under the influence of heat closed container arises. Balancing one Negative pressure, the z. B. with a filling of containers hot liquids occur when they cool down and in extreme cases can cause implosion of a container, is not possible with the generic safety valve. Another disadvantage of the known safety valve is in that the valve membrane through during transport or when Tipping over containers of spilling sticky liquid stuck together and no longer opens if there is overpressure in the container.

Der Erfindung liegt die Aufgabe zugrunde, ein Sicherheitsventil der gattungsgemäßen Art zu entwickeln, das höchsten Sicherheitsanforderungen genügt.The invention is based on the object To develop safety valve of the generic type that meet the highest security requirements.

Diese Aufgabe ist erfindungsgemäß gelöst durch ein Be- und Entlüftungsventil mit den Merkmalen des Schutzanspruches 1.This object is achieved by a Ventilation valve with the characteristics of Protection claim 1.

Der Unteranspruch beinhaltet eine vorteilhafte Weiterbildung der Erfindung. The subclaim contains an advantageous one Development of the invention.  

Das als Be- und Entlüftungsventil ausgebildete Sicherheitsventil erfüllt die Sicherheitsvorschriften, die das Auftreten eines Über- oder Unterdrucks in Transport- und Lagerbehältern unterschiedlicher Art für Flüssigkeiten verbieten, und zeichnet sich durch höchste Funktionssicherheit aus.The trained as a ventilation valve Safety valve meets the safety regulations that the occurrence of overpressure or underpressure in transport and Storage containers of different types for liquids prohibit, and is characterized by maximum functional reliability out.

Die Erfindung ist nachstehend anhand von zwei Ausführungsbeispielen erläutert. Es zeigt in vergrößerter DarstellungThe invention is based on two Exemplary embodiments explained. It shows in enlarged presentation

Fig. 1 einen Längsschnitt einer ersten Ausführungsform des erfindungsgemäßen Sicherheitsventils, Fig. 1 is a longitudinal section of a first embodiment of the safety valve according to the invention,

Fig. 2 einen Querschnitt des Ventils nach Linie II-II der Fig. 1, Fig. 2 shows a cross section of the valve along line II-II of Fig. 1,

Fig. 3 eine Draufsicht des Ventiles, Fig. 3 is a plan view of the valve,

Fig. 4 eine Draufsicht der Ventilmembran und Fig. 4 is a plan view of the valve membrane and

Fig. 5 eine zweite Ausführung des Sicherheitsventils im Längsschnitt. Fig. 5 shows a second embodiment of the safety valve in longitudinal section.

Das als Be- und Entlüftungsventil ausgebildete Sicherheitsventil 1 nach den Fig. 1 bis 4 für Tanks, Fässer, Palettenbehälter und dgl. Behälter aus Kunststoff zum Transport und zur Lagerung von Flüssigkeiten besteht aus einem Ventilstopfen 2 zum Verschließen des Be- und Entlüftungsspundes 6 oder des Füll- und Entleerspundes eines Behälters 5, einer Membran 3 und einem Klemmring 4. Die Bauteile 2, 3 und 4 des Ventils 1 sind als Kunststoff- Spritzgießteile hergestellt.The safety valve 1 designed as a ventilation valve according to FIGS. 1 to 4 for tanks, barrels, pallet containers and the like. Plastic containers for transporting and storing liquids consists of a valve plug 2 for closing the ventilation bung 6 or Filling and emptying device of a container 5 , a membrane 3 and a clamping ring 4 . The components 2 , 3 and 4 of the valve 1 are made as plastic injection molded parts.

Der Ventilstopfen 2, der in den Spund 6 eines Behälters 5 eingepreßt oder eingeschraubt wird, weist einen zur Stopfenachse 7-7 koaxialen, zentralen Belüftungskanal 8 und einen konzentrisch zu diesem angeordneten, als Ringkanal ausgebildeten Entlüftungskanal 9 auf. Der Belüftungskanal 8 und der Entlüftungskanal 9 münden in Be- und Entlüftungsöffnungen 10 im oberen Abschnitt des Ventilstopfens 2.The valve plug 2 , which is pressed or screwed into the bung 6 of a container 5 , has a central ventilation duct 8 which is coaxial with the plug axis 7-7 and a ventilation duct 9 which is arranged concentrically therewith and is designed as an annular duct. The ventilation channel 8 and the ventilation channel 9 open into ventilation openings 10 in the upper section of the valve plug 2 .

Die scheibenförmige Membran 3 ist mit einer zentralen Klappe 11 zum Öffnen des Belüftungskanals 8 bei Behälterunterdruck und einem äußeren Ringabschnitt 12 zum Öffnen des Entlüftungskanals 9 bei Behälterüberdruck ausgestattet. Die Membran 3 des Ventils 1 ist durch den auf den Ventilstopfen 2 aufgeclipsten Klemmring 4 auf einem Ventilsitz 13 am Austrittsende 14 des Belüftungskanals 8 im Ventilstopfen 2 unter Vorspannung gehalten. Der Klemmring 4 weist eine zum Belüftungskanal 8 im Ventilstopfen 2 koaxiale Belüftungsöffnung 15 und eine zu dem Entlüftungskanal 9 im Stopfen 2 koaxiale, ringförmige Entlüftungsöffnung 16 auf.The disc-shaped membrane 3 is equipped with a central flap 11 for opening the ventilation channel 8 in the case of container vacuum and an outer ring section 12 for opening the ventilation channel 9 in the event of container pressure. The membrane 3 of the valve 1 is held under prestress by the clamping ring 4 clipped onto the valve plug 2 on a valve seat 13 at the outlet end 14 of the ventilation channel 8 in the valve plug 2 . The clamping ring 4 has a ventilation channel for coaxial 8 in the valve plug 2 vent hole 15 and coaxial to the ventilation channel 9 in the plug 2, annular vent sixteenth

Die Strömungsrichtung der Luft durch das Ventil 1 in den Behälter 5 bei Belüftung ist durch durchgezogene Pfeile und die Strömungsrichtung des aus dem Behälter 5 austretenden Gases bei Entlüftung ist durch strichpunktierte Pfeile verdeutlicht.The direction of flow of the air through the valve 1 into the container 5 during ventilation is indicated by solid arrows and the direction of flow of the gas emerging from the container 5 during ventilation is illustrated by dash-dotted arrows.

Das Sicherheitsventil 1 nach Fig. 5 ist mit einer Schwallkappe 17 ausgerüstet, die auf den Klemmring 4 aufgepreßt ist. Die Schwallkappe 17 weist eine zentrale, flüssigkeitsdichte und gasdurchlässige Membran 18 zum Schutz der Ventilmembran 3 gegen beim Transport oder Umkippen eines Behälters 5 auftretende Schwallflüssigkeit und ein den Druck der Schwallflüssigkeit abbauendes Labyrinth von Durchtrittskanälen 19 auf, die den dem Behälterinnenraum 20 zugewandten Bereich der Schwallkappe 17 durchsetzen.The safety valve 1 of FIG. 5 is equipped with a surge cap 17 is pressed onto the clamping ring 4. The surge cap 17 has a central, liquid-tight and gas-permeable membrane 18 for protecting the valve membrane 3 against surge fluid occurring during transport or tipping over of a container 5 and a labyrinth of passage channels 19 which reduce the pressure of the surge fluid and which surround the area of the surge cap 17 facing the container interior 20 push through.

Claims (3)

1. Sicherheitsventil aus Kunststoff für Behälter zum Transport und zur Lagerung von Flüssigkeiten, mit einer in einem Gehäuse eingebauten Membran zur Druckentlastung bei Überdruck im Behälter, dadurch gekennzeichnet, daß das Sicherheitsventil (1) als Be- und Entlüftungsventil ausgebildet und in den Verschlußstopfen (2) des Be- und Entlüftungsspundes (6) oder des Füll- und Entleerspundes eines Behälters (5) integriert ist.1. Safety valve made of plastic for containers for the transport and storage of liquids, with a built-in membrane in a housing for pressure relief at excess pressure in the container, characterized in that the safety valve ( 1 ) is designed as a ventilation valve and in the sealing plug ( 2 ) of the aeration and ventilation bung ( 6 ) or the filling and emptying bung of a container ( 5 ) is integrated. 2. Sicherheitsventil nach Anspruch 1, dadurch gekennzeichnet, daß der Ventilstopfen (2) einen zur Stopfenachse (7-7) koaxialen, zentralen Belüftungskanal (8) und einen konzentrisch zu diesem angeordneten, als Ringkanal ausgebildeten Entlüftungskanal (9) aufweist, der Belüftungskanal (8) und der Entlüftungskanal (9) in Be- und Entlüftungsöffnungen (10) im oberen Abschnitt des Ventilstopfens (2) münden und die Membran (3), die mit einer zentralen Klappe (11) zum Öffnen des Belüftungskanals (8) bei Behälterunterdruck und einem äußeren Ringabschnitt (12) zum Öffnen des Entlüftungskanals (9) bei Behälterüberdruck ausgestattet ist, durch einen auf den Ventilstopfen (2) aufgesetzten Klemmring (4) mit einer zum Belüftungskanal (8) im Stopfen (2) koaxialen Belüftungsöffnung (15) und einer zu dem Entlüftungskanal (9) im Stopfen (2) koaxialen Entlüftungsöffnung (16) auf einem Ventilsitz (13) am Austrittsende (14) des Belüftungskanals (8) im Ventilstopfen (2) unter Vorspannung gehalten ist.2. Safety valve according to claim 1, characterized in that the valve plug ( 2 ) has a central to the plug axis ( 7-7 ) coaxial, central ventilation channel ( 8 ) and arranged concentrically to this, designed as an annular channel ventilation channel ( 9 ), the ventilation channel ( 8 ) and the ventilation channel ( 9 ) open into ventilation openings ( 10 ) in the upper section of the valve plug ( 2 ) and the membrane ( 3 ), which has a central flap ( 11 ) for opening the ventilation channel ( 8 ) when the container is underpressure and an outer ring portion (12) is equipped for opening the vent channel (9) for reservoir pressure, by a patch on the valve plug (2) clamping ring (4) with one (8) coaxial with the stopper (2) to the ventilation duct ventilation opening (15) and a to the ventilation channel ( 9 ) in the plug ( 2 ) coaxial ventilation opening ( 16 ) on a valve seat ( 13 ) at the outlet end ( 14 ) of the ventilation channel ( 8 ) in the valve plug ( 2 ) is held under tension. 3. Sicherheitsventil nach Anspruch 1 und 2, gekennzeichnet durch eine auf den Klemmring (4) für die Ventilmembran (3) aufgepreßte oder aufgeschraubte Schwallkappe (17) mit einer zentralen, flüssigkeitsdichten und gasdurchlässigen Membran (18) zum Schutz der Ventilmembran (3) gegen Schwallflüssigkeit aus einem Behälter (5) und einem Labyrinth von Durchtrittskanälen (19), die den dem Behälterinnenraum (20) zugewandten Bereich der Kappe (17) durchsetzen.3. Safety valve according to claim 1 and 2, characterized by a on the clamping ring ( 4 ) for the valve membrane ( 3 ) pressed or screwed surge cap ( 17 ) with a central, liquid-tight and gas-permeable membrane ( 18 ) to protect the valve membrane ( 3 ) against Surge fluid from a container ( 5 ) and a labyrinth of passage channels ( 19 ) which penetrate the area of the cap ( 17 ) facing the container interior ( 20 ).
DE19934315701 1993-05-11 1993-05-11 Safety valve made of plastic for containers Expired - Fee Related DE4315701C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19934315701 DE4315701C2 (en) 1993-05-11 1993-05-11 Safety valve made of plastic for containers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19934315701 DE4315701C2 (en) 1993-05-11 1993-05-11 Safety valve made of plastic for containers

Publications (2)

Publication Number Publication Date
DE4315701A1 true DE4315701A1 (en) 1994-11-17
DE4315701C2 DE4315701C2 (en) 1995-03-23

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Family Applications (1)

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DE (1) DE4315701C2 (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998008748A1 (en) * 1996-08-29 1998-03-05 Rubbermaid Incorporated Self venting container lid
US5730183A (en) * 1995-06-29 1998-03-24 Andreas Stihl Valve for venting a container
EP1314896A2 (en) * 2001-09-14 2003-05-28 Toyoda Koki Kabushiki Kaisha Reservoir having a ventilating structure
US6729345B2 (en) 2001-01-25 2004-05-04 Busak + Shamban Gmbh Sealing valve arrangement
WO2005124208A1 (en) * 2004-06-22 2005-12-29 Filtertek B.V. Check valve
WO2006050905A1 (en) * 2004-11-12 2006-05-18 Daimlerchrysler Ag Ventilation device for fluid-storing containers
WO2007122648A1 (en) * 2006-04-24 2007-11-01 Giorgio Tosini Protecting membrane for a vessel adapted for cooking, freezing or storing foodstuff
US7516765B2 (en) 2004-11-22 2009-04-14 Filtertek Inc. Air vent foil cutter
US7673653B2 (en) 2004-06-17 2010-03-09 Filtertek Inc. Check valve
US7717116B2 (en) 2004-06-07 2010-05-18 Filtertek Inc. Apparatus for connecting a respiratory device with a patient
EP2635160A2 (en) * 2010-11-01 2013-09-11 Roho, Inc. Cushion and self-adjusting valve
CN105460448A (en) * 2015-12-24 2016-04-06 西安轨道交通装备有限责任公司 Air intake and liquid drawing device for railway tank car
US20160113131A1 (en) * 2014-10-17 2016-04-21 Garmin International, Inc. Vent assembly for an electronic device enclosure
IT201900016832A1 (en) * 2019-09-20 2021-03-20 Goglio Spa Capping device for an enclosure, enclosure equipped with the capping device, system for compensating for variations in atmospheric pressure using said enclosure and method for compensating for variations in atmospheric pressure using said system
CN114233885A (en) * 2021-11-19 2022-03-25 中车长江车辆有限公司 Breather valve and thermal insulation container

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19523454B4 (en) * 1995-06-28 2005-05-04 Zf Friedrichshafen Ag Ventilation device for gearboxes and axles
DE102004040026A1 (en) * 2004-08-18 2006-02-23 Siemens Ag Emergency valve for tank-shaped vessel of coach e.g. omnibus for holding liquid or gaseous material whereby valve opens before reaching explosion limit and drains vessel-content by inlet and outlet pipes without further increase in pressure

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2501228A1 (en) * 1974-01-15 1975-07-17 Dba Sa LOCK FOR A STORAGE CONTAINER
DE8621927U1 (en) * 1986-08-16 1986-10-09 Mauser-Werke GmbH, 5040 Brühl Closure with degassing valve

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2501228A1 (en) * 1974-01-15 1975-07-17 Dba Sa LOCK FOR A STORAGE CONTAINER
DE8621927U1 (en) * 1986-08-16 1986-10-09 Mauser-Werke GmbH, 5040 Brühl Closure with degassing valve

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5730183A (en) * 1995-06-29 1998-03-24 Andreas Stihl Valve for venting a container
WO1998008748A1 (en) * 1996-08-29 1998-03-05 Rubbermaid Incorporated Self venting container lid
US6729345B2 (en) 2001-01-25 2004-05-04 Busak + Shamban Gmbh Sealing valve arrangement
EP1314896A2 (en) * 2001-09-14 2003-05-28 Toyoda Koki Kabushiki Kaisha Reservoir having a ventilating structure
EP1314896A3 (en) * 2001-09-14 2005-12-28 Toyoda Koki Kabushiki Kaisha Reservoir having a ventilating structure
USRE43886E1 (en) 2004-06-07 2013-01-01 Illinois Tool Works Inc. Apparatus for connecting a respiratory device with a patient
US7717116B2 (en) 2004-06-07 2010-05-18 Filtertek Inc. Apparatus for connecting a respiratory device with a patient
US7673653B2 (en) 2004-06-17 2010-03-09 Filtertek Inc. Check valve
WO2005124208A1 (en) * 2004-06-22 2005-12-29 Filtertek B.V. Check valve
US7360556B2 (en) 2004-06-22 2008-04-22 Filtertek Inc. Check valve
WO2006050905A1 (en) * 2004-11-12 2006-05-18 Daimlerchrysler Ag Ventilation device for fluid-storing containers
US7516765B2 (en) 2004-11-22 2009-04-14 Filtertek Inc. Air vent foil cutter
WO2007122648A1 (en) * 2006-04-24 2007-11-01 Giorgio Tosini Protecting membrane for a vessel adapted for cooking, freezing or storing foodstuff
EP2635160A2 (en) * 2010-11-01 2013-09-11 Roho, Inc. Cushion and self-adjusting valve
EP2635160A4 (en) * 2010-11-01 2014-03-26 Roho Inc Cushion and self-adjusting valve
US20160113131A1 (en) * 2014-10-17 2016-04-21 Garmin International, Inc. Vent assembly for an electronic device enclosure
CN105460448A (en) * 2015-12-24 2016-04-06 西安轨道交通装备有限责任公司 Air intake and liquid drawing device for railway tank car
IT201900016832A1 (en) * 2019-09-20 2021-03-20 Goglio Spa Capping device for an enclosure, enclosure equipped with the capping device, system for compensating for variations in atmospheric pressure using said enclosure and method for compensating for variations in atmospheric pressure using said system
WO2021053451A1 (en) * 2019-09-20 2021-03-25 Goglio S.P.A. A system for compensating for atmospheric pressure changes for high-altitude transport of packages containing powdered and/or granular material
US11919696B2 (en) 2019-09-20 2024-03-05 Goglio S.P.A. Systems for compensating for atmospheric pressure changes for high-altitude transport of packages containing powdered and/or granular materials
CN114233885A (en) * 2021-11-19 2022-03-25 中车长江车辆有限公司 Breather valve and thermal insulation container
CN114233885B (en) * 2021-11-19 2024-03-19 中车长江车辆有限公司 Breather valve and thermal insulation container

Also Published As

Publication number Publication date
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Owner name: PROTECHNA S.A., FREIBURG/FRIBOURG, CH

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