WO1995024584A1 - Hydraulisches absperrventil - Google Patents
Hydraulisches absperrventil Download PDFInfo
- Publication number
- WO1995024584A1 WO1995024584A1 PCT/EP1995/000778 EP9500778W WO9524584A1 WO 1995024584 A1 WO1995024584 A1 WO 1995024584A1 EP 9500778 W EP9500778 W EP 9500778W WO 9524584 A1 WO9524584 A1 WO 9524584A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- spring
- hydraulic shut
- insert
- valve according
- Prior art date
Links
Classifications
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/28—Couplings of the quick-acting type with fluid cut-off means
- F16L37/38—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in only one of the two pipe-end fittings
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/28—Couplings of the quick-acting type with fluid cut-off means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/0318—Processes
- Y10T137/0402—Cleaning, repairing, or assembling
- Y10T137/0491—Valve or valve element assembling, disassembling, or replacing
- Y10T137/0497—Fluid actuated or retarded
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/0318—Processes
- Y10T137/0402—Cleaning, repairing, or assembling
- Y10T137/0491—Valve or valve element assembling, disassembling, or replacing
- Y10T137/0519—Plug valve
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87917—Flow path with serial valves and/or closures
- Y10T137/87925—Separable flow path section, valve or closure in each
- Y10T137/87941—Each valve and/or closure operated by coupling motion
- Y10T137/87949—Linear motion of flow path sections operates both
- Y10T137/87957—Valves actuate each other
Definitions
- the invention relates to a hydraulic shut-off valve with a valve insert, which has a valve spring, a holding element and a valve seat and the valve spring, the holding element and the valve seat are designed as a two-part or one-part component, the valve spring being designed as a body having a cavity.
- Hydraulic shut-off valves of this type are known in hose couplings which shut off on both sides and act as a quick-release coupling.
- the connection is established by pushing the coupling sleeve onto the coupling nipple and thereby locking the coupling sleeve with the coupling nipple, for example via a ball catch.
- the two valve inserts are lifted off their sealing surfaces and establish the connection between the two hose ends.
- the valve inserts of these known hose couplings consist of several individual parts, which are usually inserted into one another.
- the holding element serves as a fastening element for the complete valve insert in the coupling nipple or in the coupling sleeve.
- the valve seat is designed as a further separate component and simultaneously serves as a carrier for the valve spring and the holding element.
- the valve spring is designed as a corrugated hose and its ends are in the sleeve-shaped cold clement or sleeve-shaped valve seat. It has been found that the recesses in the wall of the corrugated hose, the ends of which are inserted in the sleeve-shaped holding element and in the sleeve-shaped valve seat, result in dead spaces and thereby dirt gaps, which may have a disadvantageous effect on the medium to be guided in the hose lines.
- the invention is therefore based on the object of developing a hydraulic shut-off valve of the type mentioned at the outset in such a way that the valve insert poses fewer problems, in particular in the field of high-purity chemicals.
- the cavity can be closed gas-tight by means of a screw plug or by means of a cover which can be welded on or welded on.
- the valve insert according to the invention has the advantage that it has a higher spring constant and can be manufactured with smaller tolerances. Furthermore, there are no dead spaces.
- the gas-tight closure of the cavity has the advantage that when the spring is compressed, the enclosed gas volume in the cavity is also compressed and generates a restoring force in the direction of the spring force.
- This restoring force stemming from the enclosed gas volume counteracts a slackening of the spring, so that the spring constant of the valve insert according to the invention or its valve spring is constant over a long period of time is.
- the gas volume enclosed in the cavity causes an increase in the spring constant, so that materials can also be used as spring material that have a low modulus of elasticity.
- the valve insert is provided in a coupling sleeve and a coupling nipple of a hose coupling.
- the installation of the valve insert in the sleeve and the nipple is considerably simplified.
- an additional element made of a suitable material, but preferably made of plastic, can be used in the cavity of the valve insert. If the support spring installed in the cavity of the valve insert has a spiral shape, it must be helical against the screwing direction of the valve insert. This prevents loosening of the valve seat in the valve housing, triggered by the actuation of the clutch.
- such interference possibilities can be excluded by installing a spacer pin in the valve seat.
- the spacer pin can either be inserted loosely into the housing or it can be firmly connected to the outer housing.
- the valve spring is formed by a bellows or a corrugated hose.
- the bellows has an undulated wall.
- the bellows has a zigzag wall.
- the spring constant can be influenced in a targeted manner, undulated walls being used for a high spring constant and zigzag-shaped walls being used for lower spring constants.
- the spring constant can be increased further by a flat undulation or serration.
- the valve spring is formed by a coiled spring.
- the valve insert is machined or manufactured by injection molding.
- the valve seat on its side facing away from the valve spring has an actuating nose for the other valve insert.
- this actuating lug rests on the valve seat of the other valve insert and lifts it off the sealing surface when the coupling nipple is pushed further into the coupling sleeve.
- the valve seat with the actuating lug also lifts off the sealing surface, so that the two hose ends are now connected to one another and the medium to be transported can pass the two valves unhindered.
- the opening gap can be specifically adjusted by the length of the actuating lug.
- the valve insert is made of plastic, in particular a fluoroplastic, such as PFA, PTFE, TFM, PEEK, etc.
- plastics are used in particular when high-purity chemicals have to be transported. If the valve spring has a gas-tight cavity, then plastics of this type can be used without hesitation, since the spring constant of such is achieved via the enclosed gas volume Plastic is raised so far and, due to the restoring force due to the enclosed gas volume, there are no signs of fatigue in the plastic that the properties are comparable to those of metal springs.
- the valve insert according to the invention of a hydraulic shut-off valve is preferably used in hose couplings for connecting hose lines in which ultrapure chemicals are transported.
- the new valve insert proves to be particularly advantageous for this intended use, since its properties correspond to those of a valve insert with a metal spring, but the dangers associated with the use of metal components are avoided.
- contamination of the ultrapure chemical e.g. to be expected from metal ions, which would be the case if metal springs were used, which would normally be a plastic tube that is sealed at both ends.
- the hose coupling according to the invention is therefore safe in the manufacture of electronic components, e.g. Microchips or the like can be used.
- the spring constant in particular the spring characteristic, can also be influenced in a targeted manner by inserting a further spring element into the cavity of the valve spring.
- the spring characteristic can be linear, for example, be adjusted degressively or progressively, or changed so that it has a kink.
- Figure l shows a side view of a hose coupling
- Figure 2 shows a first embodiment of a valve insert in longitudinal section in an enlarged representation
- Figure 3 shows a second embodiment of a valve insert in longitudinal section in an enlarged representation.
- FIG. 1 shows a hose coupling 1 with which two ends 2 and 3 of two hose lines carrying fluid media can be connected to one another.
- the hose coupling 1 consists of a coupling nipple 4 and a coupling sleeve 5, which has a displaceably mounted sliding sleeve 6.
- the sliding sleeve 6 Before inserting the coupling nipple 4 into the coupling sleeve 5, the sliding sleeve 6 must be displaced in the direction of the arrow 7, which means that one located inside the sliding sleeve 6 does not shown ball catch is opened. Then the coupling nipple 4 can be inserted into the coupling sleeve 5 and the sliding sleeve 6 is moved against the direction of arrow 7.
- a valve insert 9 is shown schematically (with dashed lines), which tightly closes the coupling nipple 4 when the hose coupling 1 is open.
- Such a valve insert is also provided in the coupling sleeve 5, so that this is also tightly closed when the hose coupling 1 is open.
- FIG. 2 shows a first exemplary embodiment of the valve insert 9, which is designed as a one-piece component.
- the valve insert 9 has a holding element 10, a valve spring 11 and a valve seat 12.
- the valve insert 9 is fastened in the coupling nipple 4 or in the coupling sleeve 5 via the holding element 10, which is secured, in particular screwed, in the nipple 4 or in the sleeve 5.
- the screwing direction is from the hose end 2 or 3 in the direction of the coupling opening.
- Coupling nipple 4 can be removed by means of a union nut 13 so that it is accessible from behind.
- the coupling sleeve 5 can be removed or dismantled for inserting or removing the valve insert 9.
- a spring support 15, which merges into the valve spring 11, is provided on the holding element 10 coaxially via two webs 14.
- This valve spring 11 is designed as a bellows 16 and has an undulated wall 17. Instead of an undulation, the wall 17 can also be zigzag-shaped or rectangular.
- the spring constant can be changed by the inclination, represented here by the angle ⁇ , of the individual wall sections. However, this can also be varied by the wall thickness, the length of the valve spring 11, the radius of curvature of the undulation, etc.
- this valve seat 12 is conical, but it can also be provided with a seal.
- the extension 18 has an internal thread 19 into which a screw plug 20 is screwed in a gas-tight manner.
- a disk can also be glued, welded or welded on.
- a body 22 having a cavity 21 is formed, which is compressible via the valve spring 11.
- the volume of the cavity 21 is reduced and the gas contained therein is compressed.
- the energy stored in this way generates a restoring force in the direction of the spring force of the valve spring 11, ie in the closing direction of the valve insert 9. Because of this restoring force, fatigue or weakening of the valve spring 11 is counteracted, so that the spring spring has an almost identical spring constant having.
- the cavity 21 can be provided with a further spring element, e.g. a coil spring or the like. Filled, whereby the spring characteristic of the valve insert 9 is specifically influenced.
- This spring inserted into the cavity 21 can also be made of metal, although plastic is preferred.
- the valve insert 9 itself is made of plastic, in particular a fluoroplastic.
- valve insert 9 If a defect occurs in the valve insert 9 during the operation of the hose coupling 1, there is no fear of contamination of the fluid to be transported by metal ions, since the valve insert 9 is made of plastic.
- a helical spring is inserted into the cavity 21 as a further spring element 23, one opposite the screwing-in direction of the valve seat 12 has opposite spiral direction. Coaxial with the coil spring 23 there is a spacer pin 24 in the cavity 21, which is loosely located in the coil spring 23.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Check Valves (AREA)
- Fluid-Pressure Circuits (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Lift Valve (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52320995A JP3403411B2 (ja) | 1994-03-10 | 1995-03-03 | 液圧遮断弁 |
EP95910547A EP0698193B1 (de) | 1994-03-10 | 1995-03-03 | Hydraulisches absperrventil |
DE59503143T DE59503143D1 (de) | 1994-03-10 | 1995-03-03 | Hydraulisches absperrventil |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4407976A DE4407976C1 (de) | 1994-03-10 | 1994-03-10 | Hydraulisches Absperrventil |
DEP4407976.1 | 1994-03-10 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/559,658 Continuation US6270055B1 (en) | 1994-03-10 | 2000-04-28 | Hydraulic shut-off valve |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995024584A1 true WO1995024584A1 (de) | 1995-09-14 |
Family
ID=6512342
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1995/000778 WO1995024584A1 (de) | 1994-03-10 | 1995-03-03 | Hydraulisches absperrventil |
Country Status (9)
Country | Link |
---|---|
US (1) | US6270055B1 (de) |
EP (1) | EP0698193B1 (de) |
JP (1) | JP3403411B2 (de) |
KR (1) | KR100357643B1 (de) |
CN (1) | CN1046024C (de) |
AT (1) | ATE169734T1 (de) |
DE (2) | DE4407976C1 (de) |
ES (1) | ES2122561T3 (de) |
WO (1) | WO1995024584A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021122651A1 (de) | 2019-12-16 | 2021-06-24 | Em-Technik Gmbh | Schnellkupplung zum verbinden |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19524114C2 (de) * | 1995-07-03 | 1997-07-31 | Abb Patent Gmbh | Hydraulik- oder Pneumatikkupplung |
US7694693B1 (en) | 2002-10-08 | 2010-04-13 | Vitalwear, Inc. | Mixing valve for a contrast therapy system |
US8052628B1 (en) | 2002-10-08 | 2011-11-08 | Vitalwear, Inc. | Spinal column brace for a contrast therapy system |
US8425579B1 (en) | 2002-10-08 | 2013-04-23 | Vitalwear, Inc. | Therapeutic knee brace for a contrast therapy system |
US7658205B1 (en) | 2002-12-19 | 2010-02-09 | Vitalwear, Inc. | Systems for a fluid circuit coupler |
US7191798B2 (en) * | 2002-12-19 | 2007-03-20 | Vital Wear, Inc. | Fluid circuit connector system |
US7000898B2 (en) * | 2003-12-09 | 2006-02-21 | Howard Tak Su Lim | Vertical shut-off valve |
DE102004016809A1 (de) * | 2004-04-06 | 2005-10-27 | Robert Bosch Gmbh | Bürstenhalter für eine elektrische Maschine |
US7520919B2 (en) * | 2004-06-22 | 2009-04-21 | Gambro Lundia Ab | Transducer-protector device for medical apparatus |
JPWO2012098584A1 (ja) * | 2011-01-20 | 2014-06-09 | 三菱電機株式会社 | 空気調和装置 |
JP6978927B2 (ja) * | 2017-12-19 | 2021-12-08 | サーパス工業株式会社 | バルブ |
JP7300710B2 (ja) | 2019-05-10 | 2023-06-30 | サーパス工業株式会社 | サックバックバルブ |
US11566715B1 (en) | 2021-07-06 | 2023-01-31 | Saudi Arabian Oil Company | Preventing an over pressure condition with a mechanical shutdown valve |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1052739A (de) * | ||||
DE1258684B (de) * | 1960-12-09 | 1968-01-11 | British Oxygen Co Ltd | Aus zwei komplementaeren Kupplungshaelften bestehende loesbare Kupplung fuer Fluessiggasleitungen |
JPH01101219A (ja) * | 1987-10-12 | 1989-04-19 | Nissan Motor Co Ltd | 車両用空調装置のコンプレツサ構造 |
JPH05340401A (ja) * | 1992-06-08 | 1993-12-21 | Nhk Spring Co Ltd | アキュムレータ装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3528087A (en) | 1968-03-25 | 1970-09-08 | Robertshaw Controls Co | Packless valve construction |
US4286636A (en) * | 1979-07-19 | 1981-09-01 | The Coca-Cola Company | Dip tube and valve with quick-disconnect coupling for a collapsible container |
US4583710A (en) | 1982-05-10 | 1986-04-22 | Cornell Research Foundation, Inc. | Electromagnetic valve for pulsed molecular beam |
JPH0435670Y2 (de) | 1985-05-30 | 1992-08-24 | ||
US5000215A (en) | 1988-04-27 | 1991-03-19 | Phillips Edwin D | Bellows seal for valves and the like |
DE3819024A1 (de) | 1988-06-03 | 1989-12-14 | Em Technik Gmbh Armaturenbau | Kupplung fuer rohre und schlaeuche fuer aggressive fluessigkeiten |
US5122123A (en) | 1991-01-30 | 1992-06-16 | Vaillancourt Vincent L | Closed system connector assembly |
EP0988871B1 (de) | 1991-12-18 | 2004-03-24 | ICU Medical, Inc. | Verfahren zum Flüssigkeitstransfer |
-
1994
- 1994-03-10 DE DE4407976A patent/DE4407976C1/de not_active Expired - Fee Related
-
1995
- 1995-03-03 CN CN95190173A patent/CN1046024C/zh not_active Expired - Fee Related
- 1995-03-03 ES ES95910547T patent/ES2122561T3/es not_active Expired - Lifetime
- 1995-03-03 EP EP95910547A patent/EP0698193B1/de not_active Expired - Lifetime
- 1995-03-03 DE DE59503143T patent/DE59503143D1/de not_active Expired - Fee Related
- 1995-03-03 WO PCT/EP1995/000778 patent/WO1995024584A1/de active IP Right Grant
- 1995-03-03 KR KR1019950705004A patent/KR100357643B1/ko not_active IP Right Cessation
- 1995-03-03 AT AT95910547T patent/ATE169734T1/de not_active IP Right Cessation
- 1995-03-03 JP JP52320995A patent/JP3403411B2/ja not_active Expired - Fee Related
-
2000
- 2000-04-28 US US09/559,658 patent/US6270055B1/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1052739A (de) * | ||||
DE1258684B (de) * | 1960-12-09 | 1968-01-11 | British Oxygen Co Ltd | Aus zwei komplementaeren Kupplungshaelften bestehende loesbare Kupplung fuer Fluessiggasleitungen |
JPH01101219A (ja) * | 1987-10-12 | 1989-04-19 | Nissan Motor Co Ltd | 車両用空調装置のコンプレツサ構造 |
JPH05340401A (ja) * | 1992-06-08 | 1993-12-21 | Nhk Spring Co Ltd | アキュムレータ装置 |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 13, no. 311 (M - 851) 17 July 1989 (1989-07-17) * |
PATENT ABSTRACTS OF JAPAN vol. 18, no. 183 (M - 1584) 29 March 1994 (1994-03-29) * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021122651A1 (de) | 2019-12-16 | 2021-06-24 | Em-Technik Gmbh | Schnellkupplung zum verbinden |
Also Published As
Publication number | Publication date |
---|---|
JP3403411B2 (ja) | 2003-05-06 |
US6270055B1 (en) | 2001-08-07 |
ES2122561T3 (es) | 1998-12-16 |
ATE169734T1 (de) | 1998-08-15 |
KR960702594A (ko) | 1996-04-27 |
EP0698193B1 (de) | 1998-08-12 |
JPH08510543A (ja) | 1996-11-05 |
CN1124053A (zh) | 1996-06-05 |
EP0698193A1 (de) | 1996-02-28 |
CN1046024C (zh) | 1999-10-27 |
DE59503143D1 (de) | 1998-09-17 |
DE4407976C1 (de) | 1995-04-13 |
KR100357643B1 (ko) | 2003-02-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69930849T2 (de) | Ventil mit grossem durchfluss | |
DE60024047T2 (de) | Rückschlagventil | |
EP0698193B1 (de) | Hydraulisches absperrventil | |
DE4022558A1 (de) | Dichtungsvorrichtungen fuer durchflussoeffnungen | |
DE102006050723B4 (de) | Entlüftungsventil, insbesondere für Verschlussschraube | |
DE102007030654A1 (de) | Rohrtrenneranordnung | |
DE69111469T2 (de) | Unterschiedliche öffnungseinrichtungen. | |
DE19504186A1 (de) | Axialdichtung | |
DE29602330U1 (de) | Filterablauf mit Federverschluß | |
EP1648583A1 (de) | Ölfilteranordnung und filterelement | |
EP0327080A1 (de) | Rohrklemmverbindung | |
DE102007009488A1 (de) | Dichtungsanordnung | |
DE68917629T2 (de) | Ventil für Fluide. | |
DE2016620B2 (de) | Drosselklappenventil | |
DE102006022212A1 (de) | Federanordnung | |
EP1236945B1 (de) | Rohrverbindung mit einem umgeformten Rohr | |
EP0634529B1 (de) | Systemtrenner | |
CH691403A5 (de) | Vakuumventil. | |
DE4441348A1 (de) | Flanschverbindung | |
DE102004048357A1 (de) | Automaischer Tankverschluss für einen Kraftfahrzeugtank | |
DE102020130283B3 (de) | Wasseraufbereitungseinrichtung mit Anschlussbaugruppe | |
WO2017153534A1 (de) | Kunststoffeckventil | |
DE102006050720B4 (de) | Entlüftungsventil mit Staubschutzabdeckung | |
DE102008046836A1 (de) | Speichertanksystem mit Absperrvorrichtung | |
DE19722562B4 (de) | Rückschlagventil |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 95190173.7 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): CN JP KR SG US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1995910547 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 1995 545793 Country of ref document: US Date of ref document: 19951109 Kind code of ref document: A |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWP | Wipo information: published in national office |
Ref document number: 1995910547 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 1995910547 Country of ref document: EP |