EP0544997A1 - Dispositif pour tenir un tampon et tampon - Google Patents

Dispositif pour tenir un tampon et tampon Download PDF

Info

Publication number: EP0544997A1
Authority: EP; European Patent Office
Prior art keywords: stopper; stopper rod; rod; stop surface; support surface
Prior art date: 1991-11-26
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

EP92113379A

Other languages

German (de)

English (en)

Other versions

EP0544997B1 (fr

Inventor

Siegfried Pohl

Dirk Masurat

Ernst Lührsen

Gerd Bohndorf

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.)

Didier Werke AG

Original Assignee

Didier Werke AG

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.)

1991-11-26

Filing date

1992-08-06

Publication date

1993-06-09

1992-08-06 Application filed by Didier Werke AG filed Critical Didier Werke AG

1993-06-09 Publication of EP0544997A1 publication Critical patent/EP0544997A1/fr

1997-11-19 Application granted granted Critical

1997-11-19 Publication of EP0544997B1 publication Critical patent/EP0544997B1/fr

2012-08-06 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/14—Closures
- B22D41/16—Closures stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening
- B22D41/18—Stopper-rods therefor

Definitions

the invention relates to an invention for holding a refractory, ceramic stopper, in a metallurgical vessel, on a stopper rod which projects into an installation space of the stopper and is fixed therein.
the invention also relates to a stopper for such a device.
the stopper rod is usually also used to supply gas to the stopper.
EP 0 358 535 A2 is intended to ensure that sealing surfaces of the plug and the plug rod are struck after the plug rod has been screwed into the threaded piece. This is only possible if the longitudinal axis of the threaded sleeve and the longitudinal axis of the plug rod are exactly coaxial. In practice, such coaxiality is difficult to achieve. So leaks can occur. Leakages can also occur because when a provided nut is tightened, the sealing surface of the plug rod tends to lift off the sealing surface of the plug, since the threaded connection inevitably has play.
Leakages can also result from the different thermal expansion coefficients of the ceramic of the stopper on the one hand and the metal of the stopper rod on the other hand. As a result, cracks can form in the ceramic material.
the object of the invention is to propose a device of the type mentioned in the introduction, in which the stopper is held on the stopper rod while avoiding a threaded connection. It is also an object of the invention to provide such a stopper.
the above object is achieved in a device of the type mentioned in that an expansion of the installation space forms a stop surface and a support surface is formed on the stopper rod, that spreading segments with their upper edge on the stop surface in the stopper and with their lower edge on the support surface of the stopper rod rest and thereby hold the stopper on the stopper rod and that the expansion segments fold into the extension when inserting the stopper rod into the installation space.
the plug rod and the plug do not need to be rotated against one another during assembly. This makes assembly easier. During assembly, the plug rod must only be pushed axially into the plug. As soon as the expansion segments reach the area of the extension, they fold in front of the stop surface. The stopper can then no longer be removed from the stopper rod.
a disc is provided on the stopper rod, which can be pressed against the end face of the stopper by means of a thread of the stopper rod.
the spreading segments are firmly clamped between the stop surface and the support surface by the pressure of the disc acting on the end face.
the disc itself can be guided on the plug rod with an internal thread.
the disk is preferably pressed against the end face of the stopper by means of a nut guided on the thread of the stopper rod.
a sealing packing is provided between the disc and the end face.
the spreading segments preferably fold into the extension under restoring force. For this, it is sufficient to provide a spring ring encompassing the expansion segments.
the restoring force only needs to be given during assembly. It is therefore not a problem if the restoring force is lost during the operation of the stopper, since the spreading segments are clamped between the stop surface and the support surface after being unfolded.
a stopper for the device of the type mentioned is characterized in that it has an extension in its installation space, which forms a stop surface for spreading segments.
the simple structure and ease of assembly are advantageous. It is also favorable that the stopper rod does not have to have tightly toleranced designs in order to be able to be used for the stopper.
the expansion of the plug does not have to be very large, so that it weakens the plug only slightly and the steel parts, namely the plug rod and the expansion segments, can be used several times.
a stopper (1) made of refractory, ceramic material has an installation space (2) for a stopper rod (3).
the stopper rod (3) can be tubular and form a channel (4) for guiding purge gas through the stopper (1) into the melt of the metallurgical vessel (not shown).
An extension (5) is formed in the installation space (2), which forms an annular stop surface (6).
the stop surface (6) can lie in a plane radial to the longitudinal axis (L) (cf. FIG. 1). However, it can also be slightly conical (see FIG. 3).
the extension (5) is wedge-shaped in profile. It tapers from the stop surface (6) to the diameter of the installation space (2) necessary for the insertion of the plug rod (3). Overall, the extension (5) weakens the stopper (1) only slightly.
the stopper rod (3) is provided with a cylindrical taper (7). This forms a conical support surface (8).
Spreading segments (9) are provided between the support surface (8) and the stop surface (6). If, for example, three expansion segments (9) are provided, then they each do not extend by more than 120 ° around the circumference of the stopper rod (3). If four expansion segments (9) are provided, then each expansion segment (9) extends by approximately 90 ° around the circumference of the stopper rod (3).
the expansion segments (9) are made of steel. However, they can also consist of other, in particular ceramic, materials that can withstand the operating temperatures that occur.
Each spreading segment (9) forms an upper edge (10) which is assigned to the stop surface (6) and a lower edge (11) which is assigned to the support surface (8).
Each spreading segment (9) has a bevel (12) so that a tilting line (13) resting on the taper (7) is formed.
the spreading segments (9) are surrounded on the outside by a spring ring, for example a rubber ring (14).
the spring ring (14) engages between the tilt line (13) and the lower edge (11) on the expansion segments (9).
the lower edges (11) lie flat against the support surface (8).
a flat power transmission between the expansion segments (9) and the plug rod (3) is thereby achieved.
the bevels (12) rest on the taper (7).
the angle (a) of the bevel (12) is approximately equal to the angle (b) of the conical support surface (8).
the angles (a, b) are each about 15 °. However, they can easily be larger or smaller than 15 °, namely between 5 ° and 30 °.
the upper edges (10) do not lie flat against the stop surface (6).
the stopper rod (3) is provided with an external thread (15) that carries a nut (16). By means of the nut (16), a washer (17) is pressed against the end face (18) of the stopper (1).
an annular sealing packing (19) is arranged between the disc (17) and the end face (18). This is highly temperature-resistant and consists, for example, of ceramic fibers or glass fibers which are impregnated with graphite, molybdenum, water glass or the like.
a recess (20) is provided on the end face (18), which runs around the stopper rod (3) and in which the sealing packing (19) is also located.
the depression (20) can be conical or stepped.
An annular seal (22) is arranged on the stopper rod (3) below the support surface (8).
a channel (23) is formed in the stopper (1) and opens into the space between the seals (19, 22).
a pressure line (24) is connected to channel (23) through which inert gas is pressed into the space between the seals (19, 22) under pressure.
a pressure gauge (25) is connected to the pressure line (24) and indicates the pressure prevailing in the space between the seals (19, 22). As long as the pressure gauge (25) shows the setpoint value of the pressure, this is a sign that the seals (19, 22) are effective, ie no oxygen can get into the melt. If the pressure drops, this can be read on the manometer (25). In this case, the seals (19 and / or 22) are replaced, since the drop in pressure is a sign that the seals (19, 22) are no longer sufficiently tight, so that oxygen may leak out through the seal (19) the environment is sucked into the melt.
the distance (L1) of the end face (18) from the stop edge (6) is not less than the length (L2) of the expansion segments (9). It is achieved on the one hand that the stopper (1) above the stop surface (6) is sufficiently stable. On the other hand, there is some compensation for the thermal expansion in the direction of the longitudinal axis (L).
the assembly of the described device is done approximately as follows:
the expansion segments (9) are attached to the taper rod (3) which is still free of the plug (1) and held together by means of the spring ring (14). You are in the position folded out about the tilt line (13).
the plug rod (3) is then pushed into the installation space (2) of the plug (1) in the direction of arrow (A).
the spreading segments (9) first pivot into the taper (7). If the upper edge (10) then comes into the area of the extension (5) when the insert is pushed in further, the expansion segments (9) pivot under the action of the spring washer (14) in front of the stop surface (6) until the bevels (12) of the expansion segments ( 9) rest in the area of the taper (7) on the plug rod (3).
the plug rod (3) is pushed into the plug (1), it is not important that the plug (1) and the plug rod (3) are in a particular rotational position related to the longitudinal axis (L).
the sealing packing (19) is then pressed firmly against the end face (18) by means of the nut (16) over the washer (17).
the expansion segments (9) are firmly clamped between the support surface (8) and the stop surface (6).
the stopper (1) is thus held tightly and firmly on the stopper rod (3).
the holder does not loosen if the spring ring (14) loses its spring force. If the stopper (1) is worn out, it can be knocked off the stopper rod (3) and a new stopper can be placed on it in the manner described.
edge (21) between the stop surface (6) and the installation space (2). educated.
the edge (21) prevents the expansion segment (9) from folding back into the taper (7) after it has been pressed against the stop surface (6). Such a folding back could otherwise take place when the contact pressure of the sealing packing (19) decreases, the spring ring (14) is ineffective and vibrations occur.
FIG. 4 shows a partial view of the stopper rod (3) and the stopper (1) in the region of its stop surface (6).
the spreading segment (9) is shown in several stages of its pivoting out.
the upper edge (10) of the expansion segment (9) is bevelled in this case so that it lies parallel to the radial stop surface (6) in the pivoted-out position of the expansion segment (9), so that when the plug rod (3) is tightened, a flat surface is formed Contact of the upper edge (10) on the stop surface (6) results. It is constructively favorable that the stop surface (6) only has to extend radially.
the flat contact of the upper edge (10) on the stop surface (6) prevents the expansion segment (9) or one of the expansion segments (9) from undesirably folding back.
the support surface (8) of the plug rod (3) is designed beveled. However, this is not necessary. It is also possible to make the support surface (8) perpendicular to the longitudinal axis (L), radially. In this case, the lower edge (11) and the bevel (12) of the expansion segment (9) are formed as shown in FIG. 5. The spreading segment (9) is shown in FIG shown in its swung-out state. The lower edge (11) is flat on the support surface (8). The bevel (12) lies flat against the taper (7).
the simple design of the support surface (8) is particularly advantageous. In addition, there is a favorable power transmission between the expansion segments (9) of the stopper rod (3) in the tensioned state.
the holding device according to FIG. 6 differs from the holding device according to FIG. 1 only in that the gas supply channel (23) is not through a hole in the stopper (1) itself, but through an axial hole (27) and one or more radial holes (23). is formed in the stopper rod (3).
the gas supply line (24) with the pressure gauge (25) is connected to the axial bore (27).
the sealing arrangement (19, 22) is identical to the sealing arrangement according to FIG. 1.
both ring seals (19, 26) can be arranged above the expansion segments (9), in which case the ring seal (22) can be omitted.
the latter sealing arrangement can also be used in connection with the gas supply arrangement according to FIG. 1. It is only important that the channel (23) opens between the two ring seals (19, 26).

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Gasket Seals (AREA)
Furnace Housings, Linings, Walls, And Ceilings (AREA)
Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Supplying Of Containers To The Packaging Station (AREA)
Load-Engaging Elements For Cranes (AREA)

EP92113379A 1991-11-26 1992-08-06 Dispositif pour tenir un tampon et tampon Expired - Lifetime EP0544997B1 (fr)

Applications Claiming Priority (4)

Application Number	Priority Date	Filing Date	Title
DE4138812		1991-11-26
DE4138812		1991-11-26
DE4212450A DE4212450A1 (de)	1991-11-26	1992-04-14	Einrichtung zum halten eines stopfens und stopfen
DE4212450		1992-04-14

Publications (2)

Publication Number	Publication Date
EP0544997A1 true EP0544997A1 (fr)	1993-06-09
EP0544997B1 EP0544997B1 (fr)	1997-11-19

Family

ID=25909498

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP92113379A Expired - Lifetime EP0544997B1 (fr)	1991-11-26	1992-08-06	Dispositif pour tenir un tampon et tampon

Country Status (4)

Country	Link
US (1)	US5303905A (fr)
EP (1)	EP0544997B1 (fr)
AT (1)	ATE160305T1 (fr)
DE (2)	DE4212450A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1995003145A1 (fr) *	1993-07-23	1995-02-02	Burkhard Labod	Systeme permettant de relier une quenouille de cuve metallurgique a son dispositif de levage, quenouille appropriee au systeme et procede de production dudit systeme
WO1998000255A1 (fr) *	1996-07-02	1998-01-08	Foseco International Limited	Quenouille

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5381103A (en) *	1992-10-13	1995-01-10	Cree Research, Inc.	System and method for accelerated degradation testing of semiconductor devices
DE4313427C1 (de) *	1993-04-26	1994-08-18	Labod Burkhard	Anordnung zur Verbindung einer Stopfenstange für ein metallurgisches Gefäß mit ihrer Hebevorrichtung und für die Anordnung geeignete Stopfenstange sowie Verfahren zur Herstellung der Anordnung
DE19823988C2 (de) *	1998-05-29	2000-07-20	Didier Werke Ag	Stopfen für den Verschluß von Metallschmelze aufnehmenden Behältnissen
EP1618975B1 (fr) *	2004-07-22	2007-02-07	Refractory Intellectual Property GmbH & Co. KG	Quenouille à corps allongé
GB0507939D0 (en) *	2005-04-20	2005-05-25	Foseco Int	Stopper red
NZ701215A (en) *	2012-05-18	2016-08-26	Vesuvius Crucible Co	Purge plug
BR202017000379Y1 (pt) *	2016-01-10	2022-04-26	Amsted Rail Company, Inc	Mecanismo de fixação de bastão de encaixe metálico de derramamento para rodas de aço fundido

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
AT36259B (de) *	1907-05-07	1909-02-10	Manufacturers Machine Co	Sohlenschlitzmaschine.
US2987787A (en) *	1959-10-15	1961-06-13	Joseph Dixon Crucible Co	Stopper rod assemblies
AT249895B (de) *	1965-02-17	1966-10-10	Vesuvius Crucible Co	Stopfen für eine Gießpfanne oder einen ähnlichen Behälter
DE4032454A1 (de) *	1990-10-12	1992-04-16	Didier Werke Ag	Einrichtung zum halten eines stopfens bei einem metallurgischen gefaess und stopfen fuer eine solche einrichtung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1843175A (en) *	1929-08-28	1932-02-02	Corning Glass Works	Refractory article
US2005311A (en) *	1934-07-06	1935-06-18	American Sheet & Tin Plate	Stopper rod for ladles
US2587110A (en) *	1949-11-23	1952-02-26	Carter Edwin William	Bottom tap ladle mechanism
JPS613656A (ja) *	1984-06-19	1986-01-09	Honda Motor Co Ltd	底注ぎ取鍋
US4946083A (en) *	1988-12-29	1990-08-07	Vesuvius Crucible Company	One-piece stopper rod

1992
- 1992-04-14 DE DE4212450A patent/DE4212450A1/de not_active Withdrawn
- 1992-08-06 DE DE59209022T patent/DE59209022D1/de not_active Expired - Fee Related
- 1992-08-06 AT AT92113379T patent/ATE160305T1/de not_active IP Right Cessation
- 1992-08-06 EP EP92113379A patent/EP0544997B1/fr not_active Expired - Lifetime
- 1992-09-23 US US07/948,589 patent/US5303905A/en not_active Expired - Fee Related

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
AT36259B (de) *	1907-05-07	1909-02-10	Manufacturers Machine Co	Sohlenschlitzmaschine.
US2987787A (en) *	1959-10-15	1961-06-13	Joseph Dixon Crucible Co	Stopper rod assemblies
AT249895B (de) *	1965-02-17	1966-10-10	Vesuvius Crucible Co	Stopfen für eine Gießpfanne oder einen ähnlichen Behälter
DE4032454A1 (de) *	1990-10-12	1992-04-16	Didier Werke Ag	Einrichtung zum halten eines stopfens bei einem metallurgischen gefaess und stopfen fuer eine solche einrichtung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1995003145A1 (fr) *	1993-07-23	1995-02-02	Burkhard Labod	Systeme permettant de relier une quenouille de cuve metallurgique a son dispositif de levage, quenouille appropriee au systeme et procede de production dudit systeme
US5695675A (en) *	1993-07-23	1997-12-09	Labod; Burkhard	Arrangement and method for connection of a stopper rod for a metallurgical vessel to a lifting device
WO1998000255A1 (fr) *	1996-07-02	1998-01-08	Foseco International Limited	Quenouille
US6026997A (en) *	1996-07-02	2000-02-22	Foseco International Limited	Stopper rod

Also Published As

Publication number	Publication date
EP0544997B1 (fr)	1997-11-19
DE4212450A1 (de)	1993-05-27
DE59209022D1 (de)	1998-01-02
US5303905A (en)	1994-04-19
ATE160305T1 (de)	1997-12-15

Legal Events

Date	Code	Title	Description
1993-04-23	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1993-06-09	17P	Request for examination filed	Effective date: 19920825
1993-06-09	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE
1995-08-16	17Q	First examination report despatched	Effective date: 19950704
1997-01-08	GRAG	Despatch of communication of intention to grant	Free format text: ORIGINAL CODE: EPIDOS AGRA
1997-05-10	GRAH	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOS IGRA
1997-06-18	GRAH	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOS IGRA
1997-10-03	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1997-10-22	ITF	It: translation for a ep patent filed
1997-11-19	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE
1997-11-19	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19971119 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19971119 Ref country code: ES Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19971119 Ref country code: DK Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19971119
1997-11-19	REF	Corresponds to:	Ref document number: 160305 Country of ref document: AT Date of ref document: 19971215 Kind code of ref document: T
1997-11-28	ET	Fr: translation filed
1997-11-28	REG	Reference to a national code	Ref country code: CH Ref legal event code: EP
1997-12-10	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)	Effective date: 19971119
1998-01-02	REF	Corresponds to:	Ref document number: 59209022 Country of ref document: DE Date of ref document: 19980102
1998-02-19	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19980219
1998-05-06	NLV1	Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
1998-08-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980831 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980831
1998-09-25	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1998-11-11	26N	No opposition filed
1999-04-15	REG	Reference to a national code	Ref country code: CH Ref legal event code: PL
2000-07-17	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 20000717 Year of fee payment: 9
2000-08-17	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 20000817 Year of fee payment: 9
2000-08-24	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: BE Payment date: 20000824 Year of fee payment: 9 Ref country code: AT Payment date: 20000824 Year of fee payment: 9
2000-08-30	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: LU Payment date: 20000830 Year of fee payment: 9
2000-10-20	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 20001020 Year of fee payment: 9
2001-08-06	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010806 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010806 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010806
2001-08-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010831
2002-02-28	BERE	Be: lapsed	Owner name: DIDIER-WERKE A.G. Effective date: 20010831
2002-03-27	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 20010806
2002-04-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020430
2002-05-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020501
2002-06-21	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST
2005-08-06	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050806

Publication	Publication Date	Title
EP0385219A2 (fr)	1990-09-05	Bouchon de réparation et méthode pour son introduction dans le tube d'un échangeur de chaleur
LU87607A1 (de)	1990-02-07	Ventilanordnung mit restdruckventil zum fuellen und entleeren eines gasbehaelters
DE3739179C1 (de)	1989-05-18	Dichtungsanordnung
EP0544997A1 (fr)	1993-06-09	Dispositif pour tenir un tampon et tampon
DE1525702A1 (de)	1969-07-10	Dichtung fuer eine umlaufende Welle
EP1049896B1 (fr)	2002-03-27	Tubulure de raccordement a bourrelet d'etancheite
EP0372099B1 (fr)	1993-05-05	Lance compacte ayant une sécurité contre la rotation des tubes
DE1640968A1 (de)	1971-01-21	Kabelverschraubung
DE4028793A1 (de)	1992-03-12	Einrichtung zum halten eines stopfens bei einem metallurgischen gefaess sowie stopfen fuer eine solche einrichtung
DE202007018625U1 (de)	2008-12-24	Schneidbrenner mit einem Brennerkopf, der eine auswechselbare Schneiddüse aufnimmt
EP1600982B1 (fr)	2009-10-21	Récipient et procédé pour l'enveloppement imperméable aux gaz d'un objet radioactive
DE19833302A1 (de)	2000-01-27	Leitungsverbindung bei einer Einrichtung zur Abgasrückführung
DE2424148A1 (de)	1975-12-04	Gasdichtes ventil fuer hoechste druecke und hohe thermische schockbeanspruchung
DE19818571C2 (de)	2000-03-23	Rohrverschraubung zur mediendichten Verbindung von Rohrendstücken
DE3833370A1 (de)	1990-04-12	Loesbare mediendichte durchfuehrung
EP0463155B1 (fr)	1993-12-15	Robinetterie d'arret avec un dispositif d'etancheite
DE69805314T2 (de)	2003-01-02	Verfahren zum schneiden eines glasrohrs wie eine gaschromatographkolonne, eine glasfaser und ähnliches und vorrichtung zum ausüben dieses verfahrens
DE2730492B1 (de)	1978-08-03	Abdichtung fuer die Wellendurchfuehrung von Rohrschaltern,insbesondere Kugelhaehnen
DE2447723B1 (de)	1975-03-27	Rohrkoerper fuer eine Sauerstofflanze
DE19727346C2 (de)	2001-09-06	Demontierbare gasdichte Durchführung in ein Prozessrohr
DE4032454A1 (de)	1992-04-16	Einrichtung zum halten eines stopfens bei einem metallurgischen gefaess und stopfen fuer eine solche einrichtung
DE29619196U1 (de)	1997-02-13	Vorrichtung zum Abdichten eines Ringraumes
DE1475764A1 (de)	1969-03-13	Rohrverschraubung
DE8704943U1 (de)	1987-05-21	Flachdichtung
DE20107702U1 (de)	2001-07-26	Gaschromatograph mit im Injektorunterteil angeordneter Gaseinlaß- und Septumspülleitung