EP0507128A2 - Compensator locking device - Google Patents
Compensator locking device Download PDFInfo
- Publication number
- EP0507128A2 EP0507128A2 EP92104260A EP92104260A EP0507128A2 EP 0507128 A2 EP0507128 A2 EP 0507128A2 EP 92104260 A EP92104260 A EP 92104260A EP 92104260 A EP92104260 A EP 92104260A EP 0507128 A2 EP0507128 A2 EP 0507128A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- compensator
- flange
- locking device
- flat bars
- overvoltage
- 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
Links
- 239000011819 refractory material Substances 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/16—Tuyéres
- C21B7/163—Blowpipe assembly
Definitions
- the invention relates to a locking device for the overvoltage of a pipeline compensator, two straps being attached to one side of the compensator overvoltage, which transmit the transverse forces via a cross bolt and a sliding block to a strap fastened to the opposite side.
- Compensator overvoltages of this type are provided for the movement compensation of hot pipelines of shaft furnaces, in particular in the case of blast furnaces, for example in the blast furnace gas pipeline system.
- Such compensators with overvoltage can be used according to DE-36 41 138 C1, because due to considerable temperature differences between the furnace frame and the hot wind ring line strains or thermal stresses occur there.
- the known compensators with corresponding overvoltages are said to allow angular movements and axial displacements of the nozzle assemblies.
- the object of the invention is to achieve the shortest downtimes when changing the nozzle and to fix the compensator in position when changing the individual parts of the nozzle assembly, so that the weight of the parts still hanging on the compensator - intermediate tube or intermediate tube with nozzle manifold bend - can be absorbed.
- the device according to the invention for locking the compensator and the compensator overvoltage can consist, for example, of two flat bars which have a recess on the loose side and which are connected to a compensator flange so as to be rigid in relation to the compensator overvoltage by 90 °.
- Threaded bolts are attached to the other flange of the compensator, which are inserted into recesses on the flat bars.
- the recesses on the flat bars must be large enough so as not to hinder relative movements between the flat bars and the threaded rods.
- the locking is actuated in such a way that nuts on the and the compensator and the compensator overvoltage are fixed between two flanges by tightening with lock nuts.
- the locking device After completing the repair work and before starting up the nozzle assembly, the locking device is relieved by loosening the two nuts on the threaded rods and taken out of operation.
- the flat bars can be locked with the compensator flange with the aid of a transportable assembly pressure cylinder.
- Fig. 1 shows the section of a nozzle assembly with the compensator and the locking device according to the invention in cooperation with the compensator overvoltage.
- Fig. 2 shows the side view of the compensator.
- Fig. 3 shows a half section through the locking device which is fixed with the aid of an assembly pressure cylinder.
- Fig. 4 shows the hydraulic pressure cylinder in a vertical section.
- FIG. 1 and 2 show the nozzle assembly of a blast furnace, which is equipped with a multi-wall compensator (1) to absorb thermal expansion and relative movements between the blast furnace and the nozzle of the hot wind ring line (13).
- the compensator (1) is used to transmit transverse forces, which largely consist of the internal pressure and the weight of the nozzle tip (3), elbow (4), the intermediate pipe section (5) and the refractory lining (14), with a compensator overvoltage (2) provided, which prevents lateral movements in the nozzle block level, but allows all other movements.
- the compensator (1) In order to achieve short change times, the compensator (1) must be fixed in position during the change of the nozzle tip (3), the locking device having to bear the weight of the intermediate pipe (5) including the refractory material (14).
- the lock consists of two flat bars (6), which are connected to the upper compensator flange (7) so that they are stiff against bending in relation to the overvoltage (2).
- Threaded bolts (9) are attached to the lower compensator flange (8) and extend through a recess (12) into the flat bars (6).
- nuts (10) and lock nuts (11) are screwed onto the threaded bolts (9) and the flange (8) is frictionally pressed against the flat bars (6) by tightening the lock nut (11).
- 3 and 4 show a further embodiment of the locking device, which is carried out instead of the previously described fixing of the flat bars (6) on the compensator flange (8) with the aid of an assembly pressure cylinder (17).
- a pressure cylinder (17) is inserted into the respective recess (15) of the compensator flange (8) and initially held in suspension by a holder (18). With the help of a hydraulic pump (19), the hydraulic cylinder (17) is pressed against the flat bar (6) via a casing plate (16). The locking device is thereby able to fix the compensator (1) in position during the replacement of the wear parts (3, 4) described above.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Clamps And Clips (AREA)
- Supports For Pipes And Cables (AREA)
- Amplifiers (AREA)
- Control Of Eletrric Generators (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Joints Allowing Movement (AREA)
- Transplanting Machines (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
Abstract
Description
Die Erfindung betrifft eine Arretiervorrichtung für die Überspannung eines Rohrleitungskompensators, wobei an einer Seite der Kompensatorüberspannung zwei Laschen befestigt sind, die die Querkräfte über einen Querbolzen und einen Kulissenstein auf eine an der Gegenseite befestigte Lasche übertragen.The invention relates to a locking device for the overvoltage of a pipeline compensator, two straps being attached to one side of the compensator overvoltage, which transmit the transverse forces via a cross bolt and a sliding block to a strap fastened to the opposite side.
Derartige Kompensatorüberspannungen sind für den Bewegungsausgleich von Heißrohrleitungen von Schachtöfen, insbesondere bei Hochöfen, vorgesehen, beispielsweise im Gichtgas-Rohrleitungssystem. Auch bei Heißwindringleitungen, von denen Düsenstöcke zu den einzelnen Blasformen führen, aus denen Heißwind in das Ofengestell eingeblasen wird, lassen sich derartige Kompensatoren mit Überspannung nach der DE-36 41 138 C1 einsetzen, denn infolge von erheblichen Temperaturunterschieden zwischen dem Ofengestell und der Heißwindringleitung können dort Dehnungen bzw. Wärmespannungen auftreten. Die bekannten Kompensatoren mit entsprechenden Überspannungen sollen Winkelbewegungen und axiale Verschiebungen der Düsenstöcke zulassen.Compensator overvoltages of this type are provided for the movement compensation of hot pipelines of shaft furnaces, in particular in the case of blast furnaces, for example in the blast furnace gas pipeline system. Even with hot wind ring lines, from which nozzle sticks lead to the individual blow molds from which hot wind is blown into the furnace frame, such compensators with overvoltage can be used according to DE-36 41 138 C1, because due to considerable temperature differences between the furnace frame and the hot wind ring line strains or thermal stresses occur there. The known compensators with corresponding overvoltages are said to allow angular movements and axial displacements of the nozzle assemblies.
Verschleißteile wie Blasfornen, Düsenspitzen sowie Krümmer und Zwischenrohre müssen während des Hochofenbetriebes regelmäßig ausgebaut und ausgewechselt werden.Wearing parts such as blow molds, nozzle tips as well as elbows and intermediate pipes must be removed and replaced regularly during blast furnace operation.
Aufgabe der Erfindung ist es, kürzeste Stillstandszeiten beim Düsenwechsel zu erreichen und dabei den Kompensator beim Wechsel der Einzelteile des Düsenstockes in seiner Lage zu fixieren, so daß das Gewicht der noch am Kompensator hängenden Teile - Zwischenrohr bzw. Zwischenrohr mit Düsenstockkrümmer - aufgenommen werden kann.The object of the invention is to achieve the shortest downtimes when changing the nozzle and to fix the compensator in position when changing the individual parts of the nozzle assembly, so that the weight of the parts still hanging on the compensator - intermediate tube or intermediate tube with nozzle manifold bend - can be absorbed.
Diese Aufgabe wird erfindungsgemäß in der Weise gelöst, wie es in den Patentansprüchen angegeben ist.According to the invention, this object is achieved in the manner as specified in the patent claims.
Die erfindungsgemäße Vorrichtung zur Arretierung des Kompensators und der Kompensatorüberspannung kann beispielsweise aus zwei Flachstäben bestehen, die an der losen Seite eine Ausnehmung aufweisen und die zur Kompensatorüberspannung um 90 ° versetzt an einem Kompensatorflansch biegesteif angeschlossen sind.The device according to the invention for locking the compensator and the compensator overvoltage can consist, for example, of two flat bars which have a recess on the loose side and which are connected to a compensator flange so as to be rigid in relation to the compensator overvoltage by 90 °.
Bei Anwendungsfällen, bei denen während der Arretierung der Kompensator nur geringe Gewichte aufzunehmen hat, genügt die Anbringung nur eines Flachstabes.For applications in which the compensator only has to take up small weights during locking, it is sufficient to attach only one flat bar.
Am anderen Flansch des Kompensators sind Gewindebolzen befestigt, die in Ausnehmungen an den Flachstäben gesteckt werden. Die Ausnehmungen an den Flachstäben müssen groß genug sein, um Relativbewegungen zwischen den Flachstäben und den Gewindestangen nicht zu behindern.Threaded bolts are attached to the other flange of the compensator, which are inserted into recesses on the flat bars. The recesses on the flat bars must be large enough so as not to hinder relative movements between the flat bars and the threaded rods.
Beim vorgesehenen Wechsel von Teilen des Düsenstockes oder auch des gesamten Düsenstockes wird die Arretierung in der Weise betätigt, daß Muttern auf den und durch Anziehen mittels Gegenmuttern der Kompensator und die Kompensatorüberspannung zwischen zwei Flanschen fixiert werden.When the proposed change of parts of the nozzle assembly or the entire nozzle assembly, the locking is actuated in such a way that nuts on the and the compensator and the compensator overvoltage are fixed between two flanges by tightening with lock nuts.
Die beim Wechsel von Teilen oder des gesamten Düsenstockes am unteren Kompensatorflansch auftretenden Kräfte und Momente werden zu diesem Zeitpunkt über die Kompensator-Überspannung und Arretiervorrichtung übertragen.The forces and moments that occur when changing parts or the entire nozzle assembly on the lower compensator flange are transmitted at this time via the compensator overvoltage and locking device.
Nach Beendigung der Reparaturarbeiten und vor Inbetriebnahme des Düsenstockes wird die Arretiervorrichtung durch Lösen der beiden Muttern auf den Gewindestangen entlastet und außer Betrieb genommen.After completing the repair work and before starting up the nozzle assembly, the locking device is relieved by loosening the two nuts on the threaded rods and taken out of operation.
Anstelle der zuvor beschriebenen Fixierung der Flachstäbe kann nach den Merkmalen des Nebenanspruchs eine Arretierung der Flachstäbe mit dem Kompensatorflansch mit Hilfe eines transportablen Montagedruckzylinders vorgenommen werden.Instead of the previously described fixation of the flat bars, the flat bars can be locked with the compensator flange with the aid of a transportable assembly pressure cylinder.
Die Erfindung wird nachstehend anhand von schematischen Schnittdarstellungen näher erläutert.The invention is explained below with reference to schematic sectional views.
Fig. 1 zeigt den Schnitt eines Düsenstockes mit dem Kompensator und der erfindungsgemäßen Arretiervorrichtung im Zusammenwirken mit der Kompensatorüberspannung.Fig. 1 shows the section of a nozzle assembly with the compensator and the locking device according to the invention in cooperation with the compensator overvoltage.
Fig. 2 zeigt die Seitenansicht des Kompensators.Fig. 2 shows the side view of the compensator.
Fig. 3 zeigt einen Halbschnitt durch die Arretiervorrichtung, die mit Hilfe eines Montagedruckzylinders fixiert wird.Fig. 3 shows a half section through the locking device which is fixed with the aid of an assembly pressure cylinder.
Fig. 4 zeigt den hydraulischen Druckzylinder im senkrechten Schnitt.Fig. 4 shows the hydraulic pressure cylinder in a vertical section.
Fig. 1 und 2 zeigen den Düsenstock eines Hochofens, der zur Aufnahme von Wärmedehnungen und Relativbewegungen zwischen Hochofen und dem Stutzen der Heißwindringleitung (13) mit einem mehrwandigen Kompensator (1) ausgerüstet ist. Der Kompensator (1) wird zur Übertragung von Querkräften, die weitgehend aus dem Innendruck und dem Gewicht von Düsenspitze (3), Krümmer (4), dem Zwischenrohrstück (5) und der feuerfesten Auskleidung (14) bestehen, mit einer Kompensatorüberspannung (2) versehen, die Lateralbewegungen in Düsenstockebene verhindert, jedoch alle übrigen Bewegungen zuläßt.1 and 2 show the nozzle assembly of a blast furnace, which is equipped with a multi-wall compensator (1) to absorb thermal expansion and relative movements between the blast furnace and the nozzle of the hot wind ring line (13). The compensator (1) is used to transmit transverse forces, which largely consist of the internal pressure and the weight of the nozzle tip (3), elbow (4), the intermediate pipe section (5) and the refractory lining (14), with a compensator overvoltage (2) provided, which prevents lateral movements in the nozzle block level, but allows all other movements.
Während des Hochofenbetriebes müssen die Verschleißteile, wie z.B. die Düsenspitze (3), regelmäßig ausgewechselt werden. Für diesen Wechsel muß mindestens auch der Krümmer (4) mit ausgebaut werden, so daß das Zwischenrohrstück (5) dann frei an dem Kompensator (1) hängt.During blast furnace operation, wear parts such as the nozzle tip (3), be replaced regularly. For this change, at least the elbow (4) must also be removed, so that the intermediate pipe section (5) then hangs freely on the compensator (1).
Um kurze Wechselzeiten zu erreichen, muß der Kompensator (1) während des Wechsels der Düsenspitze (3) in seiner Lage fixiert werden, wobei die Arretiervorrichtung das Gewicht des Zwischenrohres (5) einschließlich des feuerfesten Materials (14) tragen muß. Die Arretierung besteht aus zwei Flachstäben (6), die gegenüber der Überspannung (2) um 90 ° versetzt am oberen Kompensatorflansch (7) biegesteif angeschlossen sind.In order to achieve short change times, the compensator (1) must be fixed in position during the change of the nozzle tip (3), the locking device having to bear the weight of the intermediate pipe (5) including the refractory material (14). The lock consists of two flat bars (6), which are connected to the upper compensator flange (7) so that they are stiff against bending in relation to the overvoltage (2).
Am unteren Kompensatorflansch (8) sind Gewindebolzen (9) befestigt, die durch eine Ausnehmung (12) in die Flachstäbe (6) reichen.Threaded bolts (9) are attached to the lower compensator flange (8) and extend through a recess (12) into the flat bars (6).
Zur Fixierung des Flansches (8) werden Muttern (10) und Gegenmuttern (11) auf die Gewindebolzen (9) geschraubt und der Flansch (8) durch Anziehen der Gegenmutter (11) reibschlüssig gegen die Flachstäbe (6) gepreßt.To fix the flange (8), nuts (10) and lock nuts (11) are screwed onto the threaded bolts (9) and the flange (8) is frictionally pressed against the flat bars (6) by tightening the lock nut (11).
Fig. 3 und 4 zeigen eine weitere Ausführung der Arretiervorrichtung, die anstelle der zuvor beschriebenen Fixierung der Flachstäbe (6) an dem Kompensatorflansch (8) mit Hilfe eines Montagedruckzylinders (17) durchgeführt wird.3 and 4 show a further embodiment of the locking device, which is carried out instead of the previously described fixing of the flat bars (6) on the compensator flange (8) with the aid of an assembly pressure cylinder (17).
Ein Druckzylinder (17) wird in die jeweilige Ausnehmung (15) des Kompensatorflansches (8) eingesetzt und durch eine Halterung (18) zunächst in Schwebe gehalten. Mit Hilfe einer Hydraulikpumpe (19) wird der Hydraulikzylinder (17) über ein Futterblech (16) gegen den Flachstab (6) gepreßt. Die Arretiervorrichtung wird dadurch in die Lage versetzt, während des Wechsels der vorab beschriebenen Verschleißteile (3, 4), den Kompensator (1) in seiner Lage zu fixieren.A pressure cylinder (17) is inserted into the respective recess (15) of the compensator flange (8) and initially held in suspension by a holder (18). With the help of a hydraulic pump (19), the hydraulic cylinder (17) is pressed against the flat bar (6) via a casing plate (16). The locking device is thereby able to fix the compensator (1) in position during the replacement of the wear parts (3, 4) described above.
- 11
- KompensatorCompensator
- 22nd
- KompensatorüberspannungCompensator overvoltage
- 33rd
- DüsenspitzeNozzle tip
- 44th
- KrümmerManifold
- 55
- ZwischenrohrIntermediate tube
- 66
- FlachstäbeFlat bars
- 77
- Oberer KompensatorflanschUpper compensator flange
- 88th
- Unterer KompensatorflanschLower compensator flange
- 99
- GewindebolzenThreaded bolt
- 1010th
- Muttermother
- 1111
- GegenmutterLock nut
- 1212
- AusnehmungRecess
- 1313
- Stutzen der HeißwindleitungConnection of the hot wind pipe
- 1414
- Feuerfest-MaterialRefractory material
- 1515
- AusnehmungRecess
- 1616
- Futterblech (Keil)Lining plate (wedge)
- 1717th
- MontagedruckzylinderAssembly pressure cylinder
- 1818th
- Halterung für MontagedruckzylinderBracket for assembly pressure cylinder
- 1919th
- Hydraulikpumpehydraulic pump
Claims (2)
dadurch gekennzeichnet,
daß zwischen den beiden Kompensatorflanschen (7, 8) mindestens ein mit einer Ausnehmung (12) versehener Flachstab (6) angeordnet ist, der einseitig an einem der Kompensatorflansche (7, 8) biegesteif befestigt ist, daß an dem jeweils gegenüberliegenden Kompensatorflansch (8, 7) ein Gewindebolzen (9) befestigt ist, daß der Gewindebolzen (9) in die Ausnehmung (12) des Flachstabes (6) eingreift und daß zur Arretierung der Flachstab (6) mittels Mutter (10) und Gegenmutter (11) reibschlüssig mit dem Gewindebolzen (9) verbunden ist.Locking device for the overvoltage of a pipe compensator, two straps being attached to one side of the compensator overvoltage, which transmit the transverse forces via a cross bolt and a sliding block to a strap fastened to the opposite side,
characterized,
that between the two compensator flanges (7, 8) there is at least one flat bar (6) provided with a recess (12) which is rigidly attached on one side to one of the compensator flanges (7, 8), that on the opposite compensator flange (8, 7) a threaded bolt (9) is attached, that the threaded bolt (9) engages in the recess (12) of the flat bar (6) and that for locking the flat bar (6) by means of nut (10) and lock nut (11) frictionally with Threaded bolt (9) is connected.
dadurch gekennzeichnet,
daß zwischen den beiden Kompensatorflanschen (7, 8) mindestens ein Flachstab (6) angeordnet ist, der einseitig an einem der Kompensatorflansche (7, 8) biegesteif befestigt ist, daß der jeweils gegenüberliegende Kompensatorflansch (8, 7) eine mit einer Ausnehmung (15) versehene Verbreiterung aufweist, in die der Flachstab (6) eingreift und daß zur Arretierung der Flachstab (6) ein transportabler Montagedruckzylinder (17) in die Kompensatorflansch-Ausnehmung (15) eingesetzt wird.Locking device for the overvoltage of a pipe compensator, two straps being attached to one side of the compensator overvoltage, which transmit the transverse forces via a cross bolt and a sliding block to a strap fastened to the opposite side,
characterized,
that at least one flat bar (6) is arranged between the two compensator flanges (7, 8) and is rigidly attached on one side to one of the compensator flanges (7, 8), that the respective opposite compensator flange (8, 7) is provided with a recess (15 ) provided widening has, in which the flat bar (6) engages and that a portable mounting pressure cylinder (17) is inserted into the compensator flange recess (15) for locking the flat bar (6).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4110628A DE4110628C1 (en) | 1991-04-02 | 1991-04-02 | |
| DE4110628 | 1991-04-02 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0507128A2 true EP0507128A2 (en) | 1992-10-07 |
| EP0507128A3 EP0507128A3 (en) | 1993-01-07 |
| EP0507128B1 EP0507128B1 (en) | 1994-10-05 |
Family
ID=6428651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92104260A Expired - Lifetime EP0507128B1 (en) | 1991-04-02 | 1992-03-12 | Compensator locking device |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5244188A (en) |
| EP (1) | EP0507128B1 (en) |
| AT (1) | ATE112618T1 (en) |
| CA (1) | CA2063905C (en) |
| DE (2) | DE4110628C1 (en) |
| ES (1) | ES2062839T3 (en) |
| FI (1) | FI94668C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102127608A (en) * | 2011-04-11 | 2011-07-20 | 张昭贵 | Blast-furnace integral air supply branch pipe device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE631211C (en) * | 1936-06-15 | Pforzheim Metallschlauch | Length limiting device for metal hose expansion joints | |
| DE1162649B (en) * | 1957-03-28 | 1964-02-06 | Associated Electrical Ind Rugb | Pipe joint piece with corrugated pipe seal and fork-shaped external joints between two connecting pieces |
| DE1913918U (en) * | 1963-10-16 | 1965-04-15 | Wilhelm Seibel | INSTALLATION EQUIPMENT FOR AXIAL COMPENSATORS. |
| GB1494881A (en) * | 1975-02-04 | 1977-12-14 | Pforzheim Metallschlauch | Flexible pipe element for example for exhaust systems of motor vehicles |
| DE3641138C1 (en) * | 1986-12-02 | 1987-12-03 | Gutehoffnungshuette Man | Pipe compensator, particularly a compensator bridge |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE750061A (en) * | 1970-05-06 | 1970-10-16 | Dessoy Nv | PIPELINE SPACER ALLOWING RELATIVE LATERAL DISPLACEMENT OF PIPES, (EXEC. K.J.A.DE BOO), |
| LU64911A1 (en) * | 1972-03-06 | 1972-07-06 | ||
| DE3225772A1 (en) * | 1982-07-09 | 1984-01-12 | Klöckner-Humboldt-Deutz AG, 5000 Köln | BLOWING |
| GB8704407D0 (en) * | 1987-02-25 | 1987-04-01 | Davy Mckee Stockton | Tuyere stock |
-
1991
- 1991-04-02 DE DE4110628A patent/DE4110628C1/de not_active Expired - Lifetime
-
1992
- 1992-02-26 FI FI920851A patent/FI94668C/en active
- 1992-03-12 EP EP92104260A patent/EP0507128B1/en not_active Expired - Lifetime
- 1992-03-12 DE DE59200583T patent/DE59200583D1/en not_active Expired - Fee Related
- 1992-03-12 ES ES92104260T patent/ES2062839T3/en not_active Expired - Lifetime
- 1992-03-12 AT AT92104260T patent/ATE112618T1/en not_active IP Right Cessation
- 1992-03-26 CA CA002063905A patent/CA2063905C/en not_active Expired - Fee Related
- 1992-04-01 US US07/861,658 patent/US5244188A/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE631211C (en) * | 1936-06-15 | Pforzheim Metallschlauch | Length limiting device for metal hose expansion joints | |
| DE1162649B (en) * | 1957-03-28 | 1964-02-06 | Associated Electrical Ind Rugb | Pipe joint piece with corrugated pipe seal and fork-shaped external joints between two connecting pieces |
| DE1913918U (en) * | 1963-10-16 | 1965-04-15 | Wilhelm Seibel | INSTALLATION EQUIPMENT FOR AXIAL COMPENSATORS. |
| GB1494881A (en) * | 1975-02-04 | 1977-12-14 | Pforzheim Metallschlauch | Flexible pipe element for example for exhaust systems of motor vehicles |
| DE3641138C1 (en) * | 1986-12-02 | 1987-12-03 | Gutehoffnungshuette Man | Pipe compensator, particularly a compensator bridge |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4110628C1 (en) | 1992-06-25 |
| CA2063905A1 (en) | 1992-10-03 |
| CA2063905C (en) | 2004-09-28 |
| FI94668C (en) | 1995-10-10 |
| EP0507128A3 (en) | 1993-01-07 |
| FI920851A (en) | 1992-10-03 |
| ES2062839T3 (en) | 1994-12-16 |
| FI920851A0 (en) | 1992-02-26 |
| EP0507128B1 (en) | 1994-10-05 |
| ATE112618T1 (en) | 1994-10-15 |
| US5244188A (en) | 1993-09-14 |
| DE59200583D1 (en) | 1994-11-10 |
| FI94668B (en) | 1995-06-30 |
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