EP0184209A1 - Montage pour dent d'excavatrice - Google Patents

Montage pour dent d'excavatrice Download PDF

Info

Publication number
EP0184209A1
EP0184209A1 EP85115478A EP85115478A EP0184209A1 EP 0184209 A1 EP0184209 A1 EP 0184209A1 EP 85115478 A EP85115478 A EP 85115478A EP 85115478 A EP85115478 A EP 85115478A EP 0184209 A1 EP0184209 A1 EP 0184209A1
Authority
EP
European Patent Office
Prior art keywords
tooth
excavator
bucket
teeth
wedge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP85115478A
Other languages
German (de)
English (en)
Other versions
EP0184209B1 (fr
Inventor
Peter Alexander Lehnhoff
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.)
Lehnhoff Hartstahl GmbH and Co
Original Assignee
Lehnhoff Hartstahl GmbH and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6252089&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0184209(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Lehnhoff Hartstahl GmbH and Co filed Critical Lehnhoff Hartstahl GmbH and Co
Publication of EP0184209A1 publication Critical patent/EP0184209A1/fr
Application granted granted Critical
Publication of EP0184209B1 publication Critical patent/EP0184209B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2866—Small metalwork for digging elements, e.g. teeth scraper bits for rotating digging elements
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808—Teeth
    • E02F9/2858—Teeth characterised by shape

Definitions

  • the invention relates to a Bag g ore-tooth arrangement for a replaceable middle teeth, canines and side teeth carrying bucket wheel bucket of a bucket wheel excavator.
  • Bucket wheel excavators are known to dig the mountains with the help of buckets which are arranged on a rotating bucket wheel which is guided along an arc of a circle, these buckets, when used in heavy mountains and in wet dredging, must be equipped with excavator teeth which are adapted to the cutting process in their arrangement and design, to always "cut” the paddle wheel. Accordingly, the central teeth, canines and posterior teeth are designed differently in their tooth shape and in their dimensions; see. "The bucket wheel excavators as extraction g et up instrument", 1st ed., 1973, TRANS. TECH. PUBLICA-TIONS, page 121.
  • the invention has for its object a new Agger dental excavator tooth arrangement for the bucket of a bucket wheel excavator and a purpose particularly suitable new B to create, through the design and arrangement of the bucket digging in heavy Mountains and the dredging is better than before with greater durability and shorter installation times and maintenance times feasible.
  • the central teeth, canine teeth and posterior teeth are excavator teeth of the same tooth shape and the same tooth dimensions, that the central axes of the one or more, the bucket centrically or
  • the central teeth, which are arranged at equally spaced vertical planes, are perpendicular to the upper edge of the bucket, so that the central axis of the canines, which are arranged in the plane containing the chest wall of the bucket, include the same, but oppositely directed inclination angles with the upper edge of the bucket, and that the central axes of the in the the side walls of the bucket including the level of the posterior teeth which are aligned with the top edge of the bucket but have different inclination angles.
  • the size of the angle of inclination of the canine teeth is 10 ° to 20 °, preferably 15 °, the angle of inclination of the posterior teeth increasing by 5 ° in each case within a range of 5 ° to 20 °, preferably at 5 °, 10 ° and 15 °.
  • the excavator teeth releasably connected to the chest wall of the bucket preferably have an angle of attack a (alpha) in the range from 30 ° to 50 °, preferably from 43 °, and a clearance angle Y (gamma) in a range from 20 ° to 28 °, preferably from 23 °, while the excavator teeth detachably connected to the side walls of the bucket have an angle of attack a (alpha) in the range from 30 ° to 50 °, preferably of 48 °, and have a clearance angle Y (gamma) in a range of 20 ° to 28 °, preferably of 18 °.
  • the excavator teeth are advantageously detachably fastened in sleeves welded to the outer wall of the bucket, the inner walls of which correspond to the outer surfaces of the tooth shaft of the excavator tooth to be received.
  • the one-piece excavator tooth which consists of a toothed wedge and a toothed shaft, between which a bead serving as a stop is arranged, has a toothed wedge underside which, based on a flat contact surface of the toothed shaft, has an increase of 1 ° to 3 °, preferably of 2 °, while the tooth wedge top, based on the abutment surface, has a depression of 20 ° to 25 °, preferably of 23 °, and wherein the wedge angle of the tooth wedge 19 ° to 22 °, preferably 21 ° , is.
  • the tooth shaft is formed as an irregular hexagon-shaped truncated pyramid with two flat, mutually opposing surfaces, one of which forms the contact surface perpendicular to the base of the truncated pyramid, and the other surfaces of the truncated pyramid, which are opposite each other in pairs Include an angle of approximately 168 °, the tooth wedge in the region below the wedge tip being of approximately double-T shape in cross section such that the recesses are located between the legs of the double T on the tooth wedge top and the tooth wedge bottom.
  • the contact surface of the excavator tooth a FIXING g S-cam which is comprised of a securing tab formed by the facing away from the excavating tooth end of the sleeve projects with a bolt and there carries a cap, which can be braced against the facing end of the sleeve by means of a screw.
  • an excavator tooth arrangement is possible which uses the same excavator teeth for the central teeth, canine teeth and posterior teeth, the different cutting tasks due to the different angular position of the excavator teeth with respect to the upper edge of the bucket and the Inclination of the sleeves receiving the excavator teeth is taken into account.
  • a conventional bucket wheel excavator has about fifteen buckets, each with nine digging teeth, it can be seen immediately that the use of identically designed digging teeth can achieve a significant simplification in manufacture, assembly and maintenance. Since the sleeves supporting the excavator teeth are firmly welded to the bucket, confusion when exchanging worn excavator teeth can no longer occur.
  • a bucket wheel bucket 1 (FIG. 1) of a bucket wheel (not shown here) of a bucket wheel excavator
  • nine digger teeth B 1 ) to B 9 are interchangeably arranged in the present exemplary embodiment, of which three digger teeth each have two side walls 2 and 3 and three digger teeth are assigned to the chest wall 4 of the bucket.
  • sleeves H 1 welded flush with the outer edge of the bucket to the upper edge K serve in cross-section to H 9 , whose inner walls 5, 6 and 7 correspond to the outer surfaces of the tooth shaft of the excavator tooth to be described in more detail below; see. also Figure 8.
  • the sleeves H are welded to the outer walls of the bucket in such a way that they each have different angles of inclination ⁇ 1 to ⁇ 9 (eta l to eta 9 ) with respect to the verticals S 1 to S 9 . exhibit. Accordingly, the excavator teeth 9 to be inserted into the sleeves H 1 to H B 1 to B 9 to have different angles of inclination ⁇ (eta). If, with reference to FIG.
  • the excavator teeth B 4 and B 6 assigned to the side walls 2 and 3 are referred to as canine teeth and the excavator teeth B 5 as central tooth, then it applies that the central axes M of the one or more, the bucket 1 centrically or arranged at equal intervals perpendicularly intersecting planes, central teeth B 5 are perpendicular to the upper edge of the bucket, that the central axis M of the canine teeth B 4 and B 6 arranged in the plane containing the chest wall 4 of the bucket 1 is of the same size but oppositely directed with the upper edge of the bucket Incline angles ⁇ 4 and ⁇ 6 (eta 4 and eta 6 ), and that the central axes M of the side teeth B 1 to B 3 and B 7 to B 9 arranged in the plane including the side walls 2 and 3 of the bucket 1 with the upper edge K of bucket 1 include rectified but different angles of inclination ⁇ 1 to ⁇ 3 and ⁇ 7 to ⁇ 9 (eta 1 to eta 3 and eta
  • the inclination angles ⁇ 4 and ⁇ 6 (eta 4 and eta 6 ) of the canines B 4 and B 6 are 10 ° to 20 °, but preferably 15 °, while the inclination angles ⁇ 1 to ⁇ 3 (eta 1 to eta 3 ) and ⁇ 9 to ⁇ 7 (eta 9 to eta 7 ) of the posterior teeth B 1 to B 3 and B 9 to B 7 from the inside, that is to say from the paddle wheel (not shown), i.e. starting from the left in relation to FIG.
  • the side walls and chest walls 2 to 4 of the bucket 1 have contact surfaces.
  • the excavator tooth B which is of identical design regardless of its use as a posterior tooth, canine tooth or central tooth, will now be described with reference to FIGS.
  • the one-piece, preferably drop-forged excavator tooth has a toothed wedge 10 and a toothed shaft 11, between which there is a broad bulge 12 which, as soon as the excavator tooth is inserted into the associated sleeve H, forms a cover for the sleeve.
  • the tooth shaft is a cross section of an irregular hexagon truncated pyramid with two flat, opposing surfaces 14, 15, one surface 14 of which forms the vertical contact surface 14 with respect to the base 36 of the truncated pyramid, and the other, each in pairs opposite one another
  • Surfaces 16, 17 and 18, 19 of the truncated pyramid enclose an angle k of approximately 168 °.
  • the surface 15 has an angle of inclination 6 (delta) of 10 ° to 14 c , in particular of 12 °.
  • the pyramid-shaped tooth wedge 10 has a tooth wedge underside 20 and a tooth wedge top 21; see. In particular, FIG. 5.
  • the tooth wedge underside 20 has an elevation c (sigma) of 1 ° to 3 °, preferably of 2 °, with respect to the contact surface 14 of the excavator tooth, while the tooth wedge top 21, with respect to this contact surface 14, has a lowering T (tau) from 20 ° to 25 °, preferably from 23 °.
  • the main one right-angled tooth wedge surfaces, as shown in particular in FIG. 4, are slightly concave.
  • the wedge angle ⁇ (beta) of the tooth wedge 10 is 19 ° to 22 °, preferably 21 °.
  • toothed wedge 10 is approximately double T-shaped in cross section in the region below its wedge tip 24, cf. Figure 7, so that there are recesses 26 and 27 on the tooth wedge top and the tooth wedge bottom 21 and 20, which are so-called self-sharpening surfaces.
  • the contact surface 14 of the excavator tooth B located on the toothed shaft 11 has a cam 30 located in the lower region, which is surrounded by a securing tab 31 which projects with a screw bolt 32 through the end of the sleeve H facing away from the excavator tooth B and there a cap 34 carries, which can be braced by means of a nut 35 with respect to the facing sleeve end 37; see. Figures 1 and 8.
  • the excavator tooth B inserted into the sleeve H can thus be fixed in a simple manner, as is also shown in FIGS. 1 and 3, the tensioning elements lying approximately in the central axis M.
  • each excavator tooth B 4 to B 6 has an angle of attack a (alpha ) in the range from 30 ° to 50 °, preferably from 43 °, and a clearance angle Y (gamma) in a range from 20 ° to 28 °, preferably from 23 °, while the excavator teeth detachably connected to the side wall 2, 3 B 1 to B3 and B 7 and B 9 a pitch angle ⁇ (alpha) in the range from 30 ° to 50 °, preferably 48 °, and a clearance angle Y (gamma) in a range from 20 ° to 28 ° preferably of 18 °; see. Figure 1.
  • a pitch angle ⁇ (alpha) in the range from 30 ° to 50 °, preferably 48 °
  • a clearance angle Y (gamma) in a range from 20 ° to 28 ° preferably of 18 °; see. Figure 1.
  • FIG. 9 shows the construction of the excavator tooth B described above as a pointed tooth. Accordingly, with otherwise the same design, in particular the tooth shaft 11 and the bead 12, the toothed wedge 10 is designed as a known pointed wedge, which ends in a point 24 'instead of the cutting edge 24.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Earth Drilling (AREA)
EP85115478A 1984-12-06 1985-12-05 Montage pour dent d'excavatrice Expired EP0184209B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3444563 1984-12-06
DE19843444563 DE3444563A1 (de) 1984-12-06 1984-12-06 Baggerzahn-anordnung

Publications (2)

Publication Number Publication Date
EP0184209A1 true EP0184209A1 (fr) 1986-06-11
EP0184209B1 EP0184209B1 (fr) 1989-03-29

Family

ID=6252089

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85115478A Expired EP0184209B1 (fr) 1984-12-06 1985-12-05 Montage pour dent d'excavatrice

Country Status (10)

Country Link
US (1) US4642920A (fr)
EP (1) EP0184209B1 (fr)
JP (1) JPH0651983B2 (fr)
CN (1) CN1006405B (fr)
AU (1) AU582512B2 (fr)
BR (1) BR8506287A (fr)
CA (1) CA1248997A (fr)
DE (2) DE3444563A1 (fr)
ES (1) ES296768Y (fr)
ZA (1) ZA859332B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0259297A1 (fr) * 1986-09-02 1988-03-09 VOEST-ALPINE Aktiengesellschaft Dent pour pelle excavatrice
EP0280003A1 (fr) * 1986-01-21 1988-08-31 Santrade Limited Dispositif pour une roue excavatrice à godets

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5018283A (en) * 1989-08-04 1991-05-28 Deere & Company Loader bucket tooth
US4949481A (en) * 1989-08-04 1990-08-21 Deere & Company Digging tooth assembly
US5653048A (en) 1995-11-06 1997-08-05 Esco Corporation Wear assembly for a digging edge of an excavator
US5782019A (en) * 1995-11-29 1998-07-21 H & L Tooth Company High strength earth working tooth
USD399511S (en) 1995-11-29 1998-10-13 H & L Tooth Company Digging tooth
US20040045742A1 (en) * 2001-04-10 2004-03-11 Halliburton Energy Services, Inc. Force-balanced roller-cone bits, systems, drilling methods, and design methods
AUPR803401A0 (en) * 2001-10-02 2001-10-25 Meyers, Thomas Anthony Excavator teeth
US8438760B2 (en) * 2002-03-26 2013-05-14 Sandvik Mining And Construction Australia (Production/Supply) Pty Ltd. Mechanical attachment system and associated failure mechanism
AUPS134802A0 (en) * 2002-03-26 2002-05-09 Shark Abrasion Systems Pty Ltd Attachment system
US6848203B2 (en) * 2002-08-19 2005-02-01 Caterpillar Inc Base edge protection system and method
US7739815B2 (en) * 2003-01-23 2010-06-22 Horton Lee A Ripper excavation tool
SE0302061L (sv) * 2003-07-11 2004-07-20 Combi Wear Parts Ab Tandsystem
US7114272B2 (en) * 2003-09-09 2006-10-03 H&L Tooth Company Winged digging tooth
USD527029S1 (en) 2004-06-14 2006-08-22 H&L Tooth Company Ground engaging tooth
US8166678B2 (en) * 2006-09-01 2012-05-01 Metalogenia, S.A. Tooth and adaptor for dredging machine
JP5307722B2 (ja) * 2006-11-23 2013-10-02 セルサ マシネラー グライスバウ アーゲー 掘削装置
US8061064B2 (en) 2007-05-10 2011-11-22 Esco Corporation Wear assembly for excavating equipment
EP1997967B1 (fr) * 2007-06-01 2010-05-12 IHC Holland IE B.V. Système de dent
JP5318993B1 (ja) * 2012-05-29 2013-10-16 株式会社小松製作所 建設機械の掘削バケット
JP5362074B2 (ja) * 2012-05-29 2013-12-11 株式会社小松製作所 建設機械の掘削バケット
DE102012111842A1 (de) 2012-12-05 2014-06-05 Thyssenkrupp Resource Technologies Gmbh Zahn für eine Schaufel, insbesondere für einen Schaufelradbagger
DE102013102407B4 (de) * 2013-03-11 2021-12-30 Thyssenkrupp Industrial Solutions Ag Schaufelrad zum Abbau von Materialien aus einem Materialverband hoher Härte
US9404240B2 (en) 2013-11-07 2016-08-02 Caterpillar Inc. Bucket lip protection assemblies and lip adapters for same
NL2015612B1 (en) * 2015-10-14 2017-05-08 Ihc Holland Ie Bv Snail tooth.
EP3358089A1 (fr) 2017-02-07 2018-08-08 Leo Dynamische Investering B.V. Tête de coupe et système denté
US10208452B2 (en) * 2017-03-22 2019-02-19 Caterpillar Inc. Bucket for implement system having symmetrical tooth mounting members
CN107806004B (zh) * 2017-11-28 2023-08-22 佛山科学技术学院 一种市政工程用的沥青铲除板
DE102018203913A1 (de) * 2018-03-14 2019-09-19 Thyssenkrupp Ag Aufnahmeanordnung eines Baggerzahnes mit einer Aufnahme zur Anordnung an der Schaufel eines Schaufelradbaggers
US12553342B2 (en) * 2022-08-02 2026-02-17 Kennametal Inc. Cutter tooth assembly for an excavating tool

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2397521A (en) * 1944-09-01 1946-04-02 Cleveland Trencher Co Rooter for excavators
GB897280A (en) * 1960-10-28 1962-05-23 Cleveland Trencher Co Digger tooth for earth and mineral-excavating machines
US3280486A (en) * 1964-10-19 1966-10-25 Atlantic Richfield Co Ripper tooth for bucket diggers and the like
DE2039407A1 (de) * 1969-08-08 1971-02-25 Kopalnia Wegla Brunatnego Adam Schaufel fuer Schaufelradbagger
US3606471A (en) * 1969-03-25 1971-09-20 Jetco Inc Trenching devices
DE2114498A1 (de) * 1971-03-25 1972-10-05 Aulfinger, Andre, 7257 Ditzingen Bagger- oder "Schaufelzahn
FR2189590A1 (fr) * 1972-06-15 1974-01-25 Great Canadian Oil Sands
US3897642A (en) * 1974-05-13 1975-08-05 Caterpillar Tractor Co Earth working tip and adapter construction
DE3031496A1 (de) * 1980-08-21 1982-03-25 Wallram Hartmetall Gmbh, 4300 Essen Schaufelradbagger

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1519101A (en) * 1924-01-14 1924-12-16 Erie Steam Shovel Company Excavating device
US2385395A (en) * 1944-02-11 1945-09-25 Electric Steel Foundry Excavating tooth
US2740212A (en) * 1955-09-30 1956-04-03 Dwight E Werkheiser Rooter tooth assembly
US3091044A (en) * 1960-10-28 1963-05-28 Cleveland Trencher Co Digger tooth
US3371437A (en) * 1965-04-28 1968-03-05 Mid Continent Steel Casting Co Locking device for digger tooth
DE7045807U (de) * 1970-12-11 1972-01-27 Lehnhoff Hartstahl Kg Hulsenhalterung fur Baggerschaufel zahne
IT1005056B (it) * 1971-12-20 1976-08-20 Italricambi Di F Quoco E C Perfezionamenti ai denti per benne di macchine per movimento terre e e denti derivati
FR2264140A1 (en) * 1974-03-15 1975-10-10 Garcia Roger Tooth support for an excavator bucket - has tooth point and adaptor abutting on only three faces
FR2277944A1 (fr) * 1974-07-08 1976-02-06 Bofors Ab Element rapporte de fixation des dents d'une pelle excavatrice
US3919792A (en) * 1974-11-25 1975-11-18 Esco Corp Excavating tooth assembly
SU606934A1 (ru) * 1976-05-11 1978-05-15 Всесоюзный Научно-Исследовательский И Проектный Институт Угольной Промышленности "Укрниипроект" Рабочий орган роторного эскаватора
US4360981A (en) * 1977-12-12 1982-11-30 Suncor Inc. Lip and tooth combination for bucket wheel excavator
US4516339A (en) * 1979-10-17 1985-05-14 Gh Hensley Industries, Inc. Combination excavating bucket, shank and digging teeth
JPS5812424A (ja) * 1981-07-15 1983-01-24 Toko Inc 逐次比較型ａ／ｄ変換器
DE3442747A1 (de) * 1984-11-23 1986-05-28 Berchem & Schaberg Gmbh, 4650 Gelsenkirchen Aus zahn und adapter bestehender werkzeugsatz

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2397521A (en) * 1944-09-01 1946-04-02 Cleveland Trencher Co Rooter for excavators
GB897280A (en) * 1960-10-28 1962-05-23 Cleveland Trencher Co Digger tooth for earth and mineral-excavating machines
US3280486A (en) * 1964-10-19 1966-10-25 Atlantic Richfield Co Ripper tooth for bucket diggers and the like
US3606471A (en) * 1969-03-25 1971-09-20 Jetco Inc Trenching devices
DE2039407A1 (de) * 1969-08-08 1971-02-25 Kopalnia Wegla Brunatnego Adam Schaufel fuer Schaufelradbagger
DE2114498A1 (de) * 1971-03-25 1972-10-05 Aulfinger, Andre, 7257 Ditzingen Bagger- oder "Schaufelzahn
FR2189590A1 (fr) * 1972-06-15 1974-01-25 Great Canadian Oil Sands
US3897642A (en) * 1974-05-13 1975-08-05 Caterpillar Tractor Co Earth working tip and adapter construction
DE3031496A1 (de) * 1980-08-21 1982-03-25 Wallram Hartmetall Gmbh, 4300 Essen Schaufelradbagger

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0280003A1 (fr) * 1986-01-21 1988-08-31 Santrade Limited Dispositif pour une roue excavatrice à godets
EP0259297A1 (fr) * 1986-09-02 1988-03-09 VOEST-ALPINE Aktiengesellschaft Dent pour pelle excavatrice

Also Published As

Publication number Publication date
JPS61137931A (ja) 1986-06-25
EP0184209B1 (fr) 1989-03-29
AU582512B2 (en) 1989-03-23
DE3444563C2 (fr) 1993-09-16
AU5079885A (en) 1986-06-12
CA1248997A (fr) 1989-01-17
US4642920A (en) 1987-02-17
DE3444563A1 (de) 1986-06-19
CN85108788A (zh) 1986-06-10
ES296768U (es) 1988-01-16
ES296768Y (es) 1988-10-01
ZA859332B (en) 1986-08-27
CN1006405B (zh) 1990-01-10
BR8506287A (pt) 1986-08-26
JPH0651983B2 (ja) 1994-07-06
DE3569139D1 (en) 1989-05-03

Similar Documents

Publication Publication Date Title
EP0184209A1 (fr) Montage pour dent d'excavatrice
DE2602744A1 (de) Zahn fuer baggerloeffel von erdbewegungsmaschinen
DE2140111A1 (de) Zweiteilige Schaufelkante für Flachbagger od. dgl
EP0317692A1 (fr) Outil de bourrage pour machine à bourrer les voies ferrées
DE2851442A1 (de) Baggerschaufel
DE1295579B (de) Vorrichtung zum UEberbruecken von Dehnungsfugen, insbesondere in Bruecken
DE9305835U1 (de) Schneidkörper für den Schlegel eines umlaufenden Schlagwerkes
DE3600105A1 (de) Zahnaerztliche reibahle
DE2004922A1 (de) Erdbearbeitungswerkzeug
DE2644992A1 (de) Fraesvorrichtung, insbesondere zum abfraesen von strassenbelaegen
DE19547170C2 (de) Fräswalze für ein in beiden Fahrtrichtungen Gewinnungsarbeit leistendes Tagebaugewinnungsgerät
DE7806211U1 (de) Bohrwerkzeug fuer bohrungen in metallvollmaterial von werkstuecken
DE4002907C2 (fr)
DE8715141U1 (de) Fräswerkzeug zur Erdbearbeitung
DE2605211C3 (de) Zweiteiliger Baggerzahn
DE3442747A1 (de) Aus zahn und adapter bestehender werkzeugsatz
EP0232468B1 (fr) Dent de tête de coupe
DE2744497B2 (de) Schaufelzahn für Bagger o.dgl
EP0260643A2 (fr) Couteau pour un cultivateur de gazon
DE3100765A1 (de) Verschleissschutz fuer die schaufelarme von mischern, insbesondere betonmischern
DE2656795B2 (de) Schlagwerkzeug zum Einsetzen in einen Abbau- bzw. Aufbruchhammer
DE2855577A1 (de) Fraesmeissel fuer eine fraes- oder schraemmeinrichtung
DE3619334A1 (de) Hohlbohrkrone
DE4226363C2 (de) Bohrkrone mit umfangverteilten, lösbar angeordneten Zahnkörpern
DE102018117655A1 (de) Verschleißschutzanordnung für den Räumschild eines Schneepfluges

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE FR GB IT NL SE

17P Request for examination filed

Effective date: 19860715

17Q First examination report despatched

Effective date: 19870611

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR GB IT NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19890329

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;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: 19890329

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 3569139

Country of ref document: DE

Date of ref document: 19890503

ET Fr: translation filed
PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: KRUPP INDUSTRIETECHNIK GMBH

Effective date: 19891223

NLR1 Nl: opposition has been filed with the epo

Opponent name: KRUPP INDUSTRIETECHNIK GMBH.

PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 19910621

NLR2 Nl: decision of opposition
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20021015

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20021021

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20021112

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20021210

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20021220

Year of fee payment: 18

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031205

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: 20031231

BERE Be: lapsed

Owner name: *LEHNHOFF HARTSTAHL G.M.B.H. & CO.

Effective date: 20031231

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 NON-PAYMENT OF DUE FEES

Effective date: 20040701

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040701

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20031205

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: 20040831

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20040701

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO