EP0979920B1 - Bohrvorrichtung mit Doppelschlagsystem - Google Patents
Bohrvorrichtung mit Doppelschlagsystem Download PDFInfo
- Publication number
- EP0979920B1 EP0979920B1 EP98121952A EP98121952A EP0979920B1 EP 0979920 B1 EP0979920 B1 EP 0979920B1 EP 98121952 A EP98121952 A EP 98121952A EP 98121952 A EP98121952 A EP 98121952A EP 0979920 B1 EP0979920 B1 EP 0979920B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drilling apparatus
- compensation ring
- ring
- shank end
- striker
- 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.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000005553 drilling Methods 0.000 claims description 29
- 230000001681 protective effect Effects 0.000 claims description 7
- 229910000906 Bronze Inorganic materials 0.000 claims description 5
- 239000010974 bronze Substances 0.000 claims description 5
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 5
- 238000005461 lubrication Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 abstract description 18
- 230000001050 lubricating effect Effects 0.000 abstract 1
- 238000003780 insertion Methods 0.000 description 30
- 230000037431 insertion Effects 0.000 description 30
- 210000003128 head Anatomy 0.000 description 6
- 230000006378 damage Effects 0.000 description 5
- 238000010009 beating Methods 0.000 description 4
- 238000011010 flushing procedure Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 239000004519 grease Substances 0.000 description 3
- 238000012549 training Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 229920001875 Ebonite Polymers 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 210000001331 nose Anatomy 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/03—Couplings; joints between drilling rod or pipe and drill motor or surface drive, e.g. between drilling rod and hammer
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B6/00—Drives for drilling with combined rotary and percussive action
- E21B6/02—Drives for drilling with combined rotary and percussive action the rotation being continuous
- E21B6/04—Separate drives for percussion and rotation
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/002—Drilling with diversely driven shafts extending into the borehole
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
Definitions
- the invention relates to a drilling device with outer tubes screwed together and screwed together inner tubes, which via a slewing gear or a Drehtschtechnik are driven, the outer tube to a turntable on both sides überragendes Einsteckende coupled and over a the inner tube associated and formed acted upon with this slidably arranged in the longitudinal direction impact member is.
- Such drilling devices are used in special civil engineering, in stone and Earth and used in the construction industry. They serve in more or less hard Mountains drill holes, into which then an anchor is inserted and fixed is, for example, in this way, the mountains or the ground to solidify.
- These drills are provided with an outer tubing string and a Inner pipe string used, the individual outer tubes and inner tubes each with Threaded and therefore are to be screwed together. While through the hollow inner tube flushing fluid from a flushing head to the drill bits is conducted, the enriched with cuttings rinse liquid is then over the gap between the outer tube and inner tube again raised to the day.
- the inner tube is usually acted upon by a rotary impact mechanism, while the outer tube only driven by a slewing gear. Especially with harder rocks, this can cause problems.
- the invention is therefore based on the object, a Bohrvotechnisch so form that the outer tube with the same device long-term rotation or can be impacted and operated.
- the object is achieved according to the invention in that the insertion end Drehtschwerks 54 a compensation ring is assigned, the one under the pipe material or the Schlagteils lying hardness and the adjacent end piece the insertion adapted and occurring forces balancing shape and / or Surface has.
- the striker is the ring wreath meant by the DE-PS 35 03 893 the end piece of the insertion end acted upon.
- the tail of the Inserting and the impact part set a balancing ring, both in terms of rotating striking part as well as the beating striking part for a balance, so that neither the impact part nor the insertion end prematurely overloaded or damaged can be.
- the balancing ring itself and its skillful training and choice of material is not only achieved that, if any, the balancing ring Wears, but such wear usually does not occur at all, because the compensation ring for a uniform transmission of the forces, d. H. Blows, care. This is true because of the special shape, d.
- the Balancing ring on one side a spatially curved, with the adjacent end of the Having a mating corresponding surface. This is a centering the balancing ring on the one hand and the insertion end on the other hand, without it one exact guidance of these two parts is needed. At the same time ensures such a compensation ring and a trained trained insertion for the fact that possibly not exactly centric incident forces but exactly centric on or in the External pipe to be forwarded. Thus, the mentioned assurance of the balance designed compensating ring ensured.
- the invention provides that the compensation ring a spatially curved on both sides, with the adjacent end of the insertion having corresponding surface, it being understood that the insertion end on the one hand and the impact part on the other hand also a correspondingly curved surface have, which are formed correspondingly reversed.
- the balancing ring preferably lies with its curved surface or rather with its curved surfaces on the one hand in accordance with tolerated executed Einsteckende or in the tolerated blow part. Already the description clarifies that kept in this way the balance ring always in an optimal position without any other control mechanisms or Control mechanisms needed.
- the balancing ring is to be assigned to the insertion end, which has the advantage has that when retracting the striking mechanism with the impact part of the loose component trained compensation ring can remain at the insertion.
- Tilting o. ⁇ .
- the invention provides that the insertion end by a housing carrying the slewing motors, the compensation ring mitein fauxd is trained.
- Particularly useful and simple is the housing with appropriate Provided projections which fix the correspondingly large compensation ring, while the impact part has a correspondingly smaller diameter and Accordingly, it can be introduced into the housing according to the fact that it is in the rotational impact operation rests on the compensation ring or the corresponding surface.
- the balance ring has a center bore lying over the diameter of the inner tube.
- This center hole can be expediently even provided with bevels, so as a Damage in this area should be avoided by striking the striker.
- the edge is in the region of the striking impact part beveled while on the opposite side of the center hole one appropriate slope may be missing.
- the impact part is in principle part of the inner tube, is accordingly influenced by the rotary impact mechanism and the impact energy can also on the Pass outdoor linkage.
- the invention provides that the impact part designed as a stop sleeve is, which is releasably connected to the insertion end of the rotary impact mechanism.
- This Insertion has corresponding thread, so that the intermediate impact sleeve can be replaced if necessary, so that then the rotary impact mechanism and the slewing are closer to each other, if only the outer tube is applied rotationally.
- Fast conversions are possible in this way, but in particular the impact sleeve can also be exchanged as needed replaced by a larger or smaller or even simply replaced.
- the balance ring is acted upon by the impact sleeve, with the corresponding Forces can be transmitted optimally, if according to the invention of Compensation ring corresponding to the head of the impact sleeve or the insertion, preferably has a larger outer diameter.
- the bigger one Diameter is advantageous if the balance ring in the housing by accordingly trained noses or projections should be mitfixiert; otherwise one would be sufficient equal equalization ring.
- the invention provides that the impact sleeve together with the rotary impact mechanism in its longitudinal direction, independent of the slewing gear the outer tube is designed to be displaceable.
- the rotary impact mechanism with the Impact sleeve is thus subtracted from the outer tube, so that this then only rotating is acted upon while the inner tube continues to act as a rotary impact to ensure the necessary drilling progress. Because the outer tube but only has to cut a relatively limited thick coat, enough for a softer Mountains a rotating action, so that to protect the linkage ultimately then the impact sleeve from the balance ring and the insertion end are deducted can.
- the impact sleeve dog-bone shaped and equipped with a funnel-shaped protective jacket is set, the end facing away from the balancing ring and the housing is formed in the region of the balancing ring at a distance with covering.
- a Protective jacket expediently consists of flexible material, for example Hard rubber or plastic. He covers the batting area, d. H. the area where the Impact sleeve impinges on the balance ring. Is the impact sleeve of the balancing ring deducted, a corresponding "shorter" training of the protective jacket, so that this expediently fixed to the inner tube or more precisely to the impact sleeve is and moves with this.
- this protective jacket can be removed, because he expediently only determined by a kind of press ring on the dog bone-shaped impact sleeve is.
- the balancing ring both with respect to the overall shape as well as the material is designed so that he can act as a compensation ring.
- the material is adjusted so that it on the one hand the Impact of the impact sleeve securely on the insertion end and thus the outer tube on the other hand, however, this insertion end so protects it by the blows can not be damaged.
- Both the shape and the material continue to provide that not exactly center striking blows are compensated so far, that it can not be damaged on the corresponding components, wherein the rotating impact sleeve is quasi centered by the balance ring.
- this compensating ring may be bent or curved outwards as well as after Inside, only the surfaces of the balance ring and the Einsteckringes or the Impact sleeve corresponding corresponding shapes have.
- the sees Invention then, that the compensation ring from a material of the insertion and the impact sleeve both in terms of hardness and thermal conductivity and deviating material is made of similar values, the toughness preferably higher is that their intended task is safely fulfilled.
- a particularly suitable for the use of material is bronze, where it is preferably forged bronze.
- This forged bronze gives one Compensation ring with optimal properties. Both in terms of hardness and toughness As well as other features, it can be the one between the impact sleeve and the insertion end absorb occurring forces without causing damage to him.
- the invention is characterized in particular by the fact that a drilling device is created, which expediently both an operation with rotating outer linkage such as rotating end outer linkage allows. It does that Drehtschwerk the inner rod or inner tube, as already known, for that the outer tube is also contracted beating. Between the individual Components, d. H. between the impact sleeve on the one hand and the end of the insertion end and thus the outer tube, a compensation ring is set, which in every respect for balancing and at the same time ensuring that those coming from the rotary impact mechanism Impacts are safely transferred to the outer tube when needed.
- the balancing ring ensures that both in terms of heat and impinging Energy overloads of the insertion especially but also the impact sleeve can not occur.
- a drilling device 1 for double linkage is shown in Fig. 1 in side view.
- the Outer tube is designated 2, the smaller diameter inner tube with 3.
- the slewing gear 4 wherein here on the representation of details can be omitted, ensure the slewing motors 6 of the rotary impact mechanism 7 together with the impact device that the inner tube 3 is applied rotationally.
- Fig. 1 actually shows the end of the outer tube 2 forming spigot 5, the end equipped with a double thread 14.
- the slewing gear 4 and the rotary impact mechanism 7 can work together on one here only indicated sledges are moved longitudinally so as to ensure that the entire drill string is driven into the mountains or in the building land.
- the sledge is divided into two parts. The parts are connected via a hydraulic cylinder, to pull the punch off the slewing gear.
- Fig. 2 shows once again the flushing head 13, which sits on the inner tube 3, and the impact part 8, which is designed here as a stop sleeve 15.
- This impact sleeve 15 acts on the balance ring 10 on the end piece 11 of the insertion end 5 and thus on the outer tube 2.
- the inner tube 3 is not shown here thread screwed to the stop sleeve 15.
- the head 17 of the impact sleeve 15 acts directly on the balance ring 10, wherein the rotating movement of the impact sleeve 15 an influence on the balance ring 10 is not affected, especially on the Lubrication holes 12 pressed into the region of the balance ring 10 grease can be.
- Recognizable is the inner channel 20, over which the detergent in the direction not here shown drill bit is promoted.
- the head 17 of the impact sleeve 15 and the end portion of the housing 19 with the appropriately mounted balance ring 10 are covered by a protective jacket 18 and secured, on the end facing away from the balance ring 10 end 19 of the impact sleeve 15 is set so that he together with the impact sleeve 15 and back pushes, but always ensures that, especially when activated impact mode the area of the compensation ring 10 is covered.
- Fig. 3 shows a balancing ring 10 in section, wherein the surfaces 21, 22nd here on both sides of the balance ring 10 straight.
- these surfaces 21, 22 are preferably spatially curved trained so u a. a self-centering of the impact sleeve 15 at Impact operation and a large surface (bearing surface) to achieve.
- the center bore 23 is larger than the outer diameter of the inner tube 3, which is also clear from Fig. 2, so that facilitates insertion of the inner tube is, but at the same time an influence on the balance ring 10 through the inner tube or vice versa is excluded.
- the outer edges 24, 25 are rounded, as Fig. 3 illustrates, wherein also the inner edges 26 may have corresponding fillets or bevels.
- the compensation ring 10 consists of appropriately matched toughened material, wherein the surfaces 21, 22 can also be smoothed so far that in addition to or even without lubricant always an even operation of itself rotating impact sleeve 15 is possible.
- the correspondingly facing surface of the impact sleeve 15 is smoothed, and also the corresponding Surface of the insertion end 5.
Description
- Fig. 1
- eine Gesamtansicht einer Bohrvorrichtung mit Doppelschlagwerk in Seitenansicht,
- Fig. 2
- einen Ausschnitt im Bereich des Ausgleichsringes und
- Fig. 3
- einen Ausgleichsring im Schnitt.
Claims (15)
- Bohrvorrichtung mit miteinander verschraubten Außenrohren (2) und miteinander verschraubten Innenrohren (3), die über ein Drehwerk (4) bzw. ein Drehschlagwerk (7) antreibbar sind, wobei das Außenrohr (2) an ein das Drehwerk (4) beidseitig überragendes Einsteckende (5) ankoppelbar und über ein dem Innenrohr (3) zugeordnetes und mit diesem in Längsrichtung verschiebbar angeordnetes Schlagteil (8) beaufschlagbar herausgebildet ist,
dadurch gekennzeichnet, dass dem Einsteckende (5) drehschlagwerksseitig ein Ausgleichsring (10) zugeordnet ist, der eine unter der des Materials des rohrförmigen Endstückes (11) des Einsteckendes (5) bzw. des Schlagteils (8) liegende Härte und eine dem angrenzenden Endstück (11) des Einsteckendes (5) angepaßte und auftretende Kräfte ausgleichende Form aufweist. - Bohrvorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass der Ausgleichsring (10) eine dem angrenzenden Endstück (11) des Einsteckendes (5) angepasste und auftretende Kräfte ausgleichende Oberfläche (21, 22) aufweist. - Bohrvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass der Ausgleichsring (10) einseitig eine räumlich gekrümmte, mit dem angrenzenden Endstück (11) des Einsteckendes (5) korrespondierende Oberfläche (21) aufweist. - Bohrvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass der Ausgleichsring (10) beidseitig eine räumlich gekrümmte, mit dem angrenzenden Endstück (11) des Einsteckendes (5) korrespondierende Oberfläche (21; 22) aufweist. - Bohrvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass das Einsteckende (5) von einem die Drehwerksmotoren (6) tragenden Gehäuse (9) den Ausgleichsring (10) mit einfassend ausgebildet ist. - Bohrvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass im Gehäuse (9) auf die gekrümmte Oberfläche (21, 22) des Ausgleichsrings (10) gerichtete Schmierbohrungen (12) vorgesehen sind. - Bohrvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass der Ausgleichsring (10) eine über dem Durchmesser des Innenrohrs (3) liegende Mittenbohrung (23) aufweist. - Bohrvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Außenränder (24, 25) des Ausgleichsringes (10) abgerundet ausgebildet sind. - Bohrvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass das Schlagteil (8) als Schlagmuffe (15) ausgebildet ist, die mit dem Einsteckende (16) des Drehschlagwerkes (7) lösbar verbunden ist. - Bohrvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass der Ausgleichsring (10) einen mit dem Kopf (17) der Schlagmuffe (15) bzw. dem Einsteckende (5) korrespondierenden, vorzugsweise einen größen Außendurchmesser aufweist. - Bohrvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Schlagmuffe (15) zusammen mit dem Drehschlagwerk (7) in dessen Längsrichtung unabhängig vom Drehwerk (4) des Außenrohres (2) verschiebbar ausgebildet ist. - Bohrvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Schlagmuffe (15) hundeknochenförmig geformt und mit einem trichterförmigen Schutzmantel (18) ausgerüstet ist, der am dem Ausgleichsring abgewandten Ende (19) festgelegt und das Gehäuse (9) im Bereich des Ausgleichsringes (10) im Abstand mit abdeckend ausgebildet ist. - Bohrvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass der Ausgleichsring (10) aus einem vom Material des Einsteckendes (5) und der Schlagmuffe (15) sowohl bezüglich Härte wie auch Wärmeleitfähigkeit und ähnlicher Werte abweichendem Material gefertigt ist, wobei die Zähigkeit vorzugsweise höher ist. - Bohrvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass der Ausgleichsring (10) aus Bronze besteht. - Bohrvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass der Ausgleichsring (10) aus Bronze besteht, die zur Verbesserung, vorzugsweise der Zähigkeit, geschmiedet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19836389 | 1998-08-12 | ||
DE19836389A DE19836389C1 (de) | 1998-08-12 | 1998-08-12 | Bohrvorrichtung mit Doppelschlagsystem |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0979920A2 EP0979920A2 (de) | 2000-02-16 |
EP0979920A3 EP0979920A3 (de) | 2003-12-10 |
EP0979920B1 true EP0979920B1 (de) | 2005-03-02 |
Family
ID=7877208
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98121952A Expired - Lifetime EP0979920B1 (de) | 1998-08-12 | 1998-11-19 | Bohrvorrichtung mit Doppelschlagsystem |
Country Status (5)
Country | Link |
---|---|
US (1) | US6202763B1 (de) |
EP (1) | EP0979920B1 (de) |
AT (1) | ATE290155T1 (de) |
CA (1) | CA2268400A1 (de) |
DE (2) | DE19836389C1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7465967B2 (en) * | 2005-03-15 | 2008-12-16 | Cree, Inc. | Group III nitride field effect transistors (FETS) capable of withstanding high temperature reverse bias test conditions |
US7976243B2 (en) | 2006-06-15 | 2011-07-12 | Green Core Technologies, Llc | Methods and apparatus for installing conduit underground |
US8596916B2 (en) | 2006-06-15 | 2013-12-03 | Joseph M Rohde | Apparatus for installing conduit underground |
DE102006059633B4 (de) * | 2006-12-14 | 2016-12-01 | Robert Bosch Gmbh | Schlagbohrmaschine |
DE102006061625A1 (de) * | 2006-12-27 | 2008-07-03 | Robert Bosch Gmbh | Elektrohandwerkzeugmaschine |
US8708054B2 (en) * | 2009-12-09 | 2014-04-29 | Schlumberger Technology Corporation | Dual path subsea control system |
US9555532B2 (en) | 2013-07-01 | 2017-01-31 | Ingersoll-Rand Company | Rotary impact tool |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT281729B (de) * | 1968-02-28 | 1970-05-25 | Boehler & Co Ag Geb | Vorrichtung zum Überlagerungs-, Ankerloch- und/oder Unterwasserbohren |
US3629927A (en) * | 1970-03-30 | 1971-12-28 | Byron Jackson Inc | Mouse hole chuck |
CH559088A5 (de) | 1971-12-23 | 1975-02-28 | Sig Schweiz Industrieges | |
CH638587A5 (de) | 1979-02-12 | 1983-09-30 | Uster Spindel Motoren Maschf | Schlagbohrhammer. |
DE3503893C1 (de) * | 1985-02-06 | 1985-10-24 | Ing. Günter Klemm, Spezialunternehmen für Bohrtechnik, 5962 Drolshagen | Bohrvorrichtung |
RU1778289C (ru) | 1988-05-04 | 1992-11-30 | Карагандинский политехнический институт | Гидравлическа бурильна машина |
FR2647870B1 (fr) | 1989-06-06 | 1991-09-06 | Eimco Secoma | Appareil de percussion hydraulique avec dispositif d'amortissement des ondes de choc en retour |
JPH06108770A (ja) | 1992-08-31 | 1994-04-19 | Sig (Schweiz Ind Ges) | ロックドリル用ドリル装置 |
DE4419499A1 (de) | 1994-06-03 | 1995-12-07 | Interoc Vertriebsgesellschaft | Hydraulisches Schlaggerät mit stufenlos regelbarer Schlagzahl und Schlagenergie |
-
1998
- 1998-08-12 DE DE19836389A patent/DE19836389C1/de not_active Expired - Fee Related
- 1998-11-19 EP EP98121952A patent/EP0979920B1/de not_active Expired - Lifetime
- 1998-11-19 DE DE59812616T patent/DE59812616D1/de not_active Expired - Fee Related
- 1998-11-19 AT AT98121952T patent/ATE290155T1/de active
-
1999
- 1999-04-07 CA CA002268400A patent/CA2268400A1/en not_active Abandoned
- 1999-04-22 US US09/296,171 patent/US6202763B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE19836389C1 (de) | 2000-04-13 |
EP0979920A3 (de) | 2003-12-10 |
ATE290155T1 (de) | 2005-03-15 |
EP0979920A2 (de) | 2000-02-16 |
US6202763B1 (en) | 2001-03-20 |
CA2268400A1 (en) | 2000-02-12 |
DE59812616D1 (de) | 2005-04-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
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 |
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