EP1574473A1 - Gripping tool - Google Patents

Gripping tool Download PDF

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Publication number
EP1574473A1
EP1574473A1 EP04030355A EP04030355A EP1574473A1 EP 1574473 A1 EP1574473 A1 EP 1574473A1 EP 04030355 A EP04030355 A EP 04030355A EP 04030355 A EP04030355 A EP 04030355A EP 1574473 A1 EP1574473 A1 EP 1574473A1
Authority
EP
European Patent Office
Prior art keywords
wear
gripping tool
gripper
shell
tool according
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
EP04030355A
Other languages
German (de)
French (fr)
Other versions
EP1574473B1 (en
Inventor
Asam Dirk
Wager Bernd
Mieger Holf
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.)
Liebherr Hydraulikbagger GmbH
Original Assignee
Liebherr Hydraulikbagger GmbH
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
Application filed by Liebherr Hydraulikbagger GmbH filed Critical Liebherr Hydraulikbagger GmbH
Publication of EP1574473A1 publication Critical patent/EP1574473A1/en
Application granted granted Critical
Publication of EP1574473B1 publication Critical patent/EP1574473B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
    • B66C3/04—Tine grabs
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
    • E02F3/402—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors
    • E02F3/404—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors comprising two parts movable relative to each other, e.g. for gripping
    • 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
    • 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
    • E02F9/2816—Mountings therefor
    • E02F9/2833—Retaining means, e.g. pins
    • 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
    • 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
    • E02F9/2883—Wear elements for buckets or implements in general

Definitions

  • the invention relates to a gripping tool, preferably a multi-shell gripper, with at least one prong.
  • Clamshell grabs for material handling serve in particular for loading of bulk materials, fine and coarse scrap, demolition material or for loading of VA steels. These materials are abrasive materials that often have a much higher hardness than the receiving tool or the gripper. As a result, a considerable material removal occurs after a relatively short time the gripper shells on. For constructive reasons, especially because of the required Toughness, the claw shells are made of a not so tough Material produced, so that the total amount of wear is very high.
  • the hook shells are currently regenerated by so-called armoring with an electrode. This surfacing is very time consuming and it is to this regeneration of the claw shells necessary to remove the entire grapple shell.
  • the object of the invention is to extend the durability of the gripping tools and to simplify the possibly necessary regeneration of the gripping tools and thus lowering the regeneration costs.
  • a gripping tool preferably a multi-shell gripper, created, the at least one claw shell with at least one Having tines, wherein at least one gripper cup at least one wear element is arranged such that the main wear areas through the at least one wear element are covered.
  • the at least a wear element made of wear-resistant material.
  • This wear-resistant On the one hand, material can be a highly wear-resistant material, which as such is not weldable, or even a highly tempered material, that is just weldable.
  • the at least one wear element can advantageously via bolts and / or Screw with the gripper shell be releasably connected again. This is a particularly easy replacement of the wear element possible.
  • the wear element via an adhesive connection with the hook shell be connected.
  • a highly wear-resistant material which is not weldable as such, be connected to the gripper shell. This is of course also for the aforementioned case of the bolt and / or screw connection possible.
  • the wear element and high-tempered Material exist, which is very resistant, but still weldable is.
  • This wear element can be tack welded to the hook shell be connected.
  • the wear element be made as a cast or forged part.
  • the wear elements can each be designed as circular segments be, with the advantage that, depending on the wear, the individual circle segments then can be replaced individually.
  • Fig. 1 is a single gripper shell 10 of a gripping tool according to the invention, consisting of a tine, shown.
  • the gripper cup 10 is, as in the Fig. 1, executed curved.
  • the gripper shell 10 has bearings in the usual way 12 and 14 on.
  • the gripper shells 10 are made of a tough but not made of very resistant material.
  • the wear elements 16, 18 and 20 executed as castings, all three parts in the form of circle segments are designed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Crushing And Grinding (AREA)
  • Earth Drilling (AREA)
  • Gripping On Spindles (AREA)
  • Fishing Rods (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)

Abstract

The grab (10) has at least one tine and one or more wear elements (16,18,20) mounted on one of the grab buckets so that the main wear regions are covered through the wear element. The wear element is preferably made of a wear-resistant material and can be detachably connected to the bucket through bolts and/or screws. The wear element can be a forged or cast element.

Description

Die Erfindung betrifft ein Greifwerkzeug, vorzugsweise einen Mehrschalengreifer, mit mindestens einem Zinken.The invention relates to a gripping tool, preferably a multi-shell gripper, with at least one prong.

Mehrschalengreifer für den Materialumschlag dienen insbesondere der Verladung von Schüttgütern, Fein- und Grobschrott, Abbruchmaterial oder auch zum Verladen von VA-Stählen. Bei diesen Materialien handelt es sich um abrasive Materialien, die oft eine wesentlich höhere Härte aufweisen als das aufnehmende Werkzeug bzw. der Greifer. Hierdurch tritt nach relativ kurzer Zeit ein erheblicher Materialabtrag an den Greiferschalen auf. Aus konstruktiven Gründen, insbesondere wegen der erforderlichen Zähigkeit, sind die Greiferschalen aus einem nicht so widerstandsfähigen Material hergestellt, so dass der Verschleiß insgesamt sehr hoch ist.Clamshell grabs for material handling serve in particular for loading of bulk materials, fine and coarse scrap, demolition material or for loading of VA steels. These materials are abrasive materials that often have a much higher hardness than the receiving tool or the gripper. As a result, a considerable material removal occurs after a relatively short time the gripper shells on. For constructive reasons, especially because of the required Toughness, the claw shells are made of a not so tough Material produced, so that the total amount of wear is very high.

Um die Standzeit der Greiferschalen zu erhöhen, werden die Greiferschalen derzeit durch sogenanntes Aufpanzern mit einer Elektrode regeneriert. Diese Auftragsschweißung ist sehr zeitaufwendig und es ist zu dieser Regenerierung der Greiferschalen notwendig, die gesamte Greiferschale auszubauen. To increase the service life of the hook shells, the hook shells are currently regenerated by so-called armoring with an electrode. This surfacing is very time consuming and it is to this regeneration of the claw shells necessary to remove the entire grapple shell.

Aufgabe der Erfindung ist es, die Haltbarkeit der Greifwerkzeuge zu verlängern und die eventuell notwendige Regenerierung der Greifwerkzeuge zu vereinfachen und damit die Regenerierungskosten zu senken.The object of the invention is to extend the durability of the gripping tools and to simplify the possibly necessary regeneration of the gripping tools and thus lowering the regeneration costs.

Erfindungsgemäß wird diese Aufgabe durch die Kombination der Merkmale des Anspruchs 1 gelöst. Demnach wird ein Greifwerkzeug, vorzugsweise ein Mehrschalengreifer, geschaffen, der mindestens eine Greiferschale mit mindestens einem Zinken aufweist, wobei an der mindestens einen Greiferschale mindestens ein Verschleißelement derart angeordnet ist, dass die Hauptverschleißbereiche durch das mindestens eine Verschleißelement abgedeckt sind.According to the invention, this object is achieved by the combination of the features of Claim 1 solved. Accordingly, a gripping tool, preferably a multi-shell gripper, created, the at least one claw shell with at least one Having tines, wherein at least one gripper cup at least one wear element is arranged such that the main wear areas through the at least one wear element are covered.

Hierdurch werden die von dem abrasiven Material hauptsächlich angegriffenen Bereiche wirkungsvoll geschützt. Nach entsprechendem Verschleiß der zusätzlich vorgesehenen Verschleißelemente können diese in einfacher Weise ausgetauscht werden.As a result, the areas mainly attacked by the abrasive material become effectively protected. After appropriate wear of the additional provided wear elements can be replaced in a simple manner become.

Besondere Ausgestaltungen der Erfindung ergeben sich aus dem sich an den Hauptanspruch anschließenden Unteransprüchen: Demnach kann das mindestens eine Verschleißelement aus verschleißfestem Material bestehen. Dieses verschleißfeste Material kann einerseits ein hoch verschleißbeständiges Material sein, das als solches nicht schweißbar ist, oder aber auch ein hoch vergütetes Material, das gerade noch schweißbar ist.Particular embodiments of the invention will become apparent from the to the Main claim subsequent subclaims: Accordingly, the at least a wear element made of wear-resistant material. This wear-resistant On the one hand, material can be a highly wear-resistant material, which as such is not weldable, or even a highly tempered material, that is just weldable.

Das mindestens eine Verschleißelement kann vorteilhaft über Bolzen und/oder Schrauben mit der Greiferschale wieder lösbar verbunden sein. Hierdurch ist ein besonders einfaches Austauschen der Verschleißelement möglich.The at least one wear element can advantageously via bolts and / or Screw with the gripper shell be releasably connected again. This is a particularly easy replacement of the wear element possible.

Alternativ kann das Verschleißelement über eine Klebeverbindung mit der Greiferschale verbunden sein. In diesem Fall kann ein hoch verschleißbeständiges Material, das als solches nicht schweißbar ist, mit der Greiferschale verbunden werden. Dies ist natürlich auch für den vorgenannten Fall der Bolzen und/oder Schraubenverbindung möglich. Alternatively, the wear element via an adhesive connection with the hook shell be connected. In this case, a highly wear-resistant material, which is not weldable as such, be connected to the gripper shell. This is of course also for the aforementioned case of the bolt and / or screw connection possible.

Im Rahmen der Erfindung kann das Verschleißelement auch aus hoch vergütetem Material bestehen, welches zwar sehr widerstandsfähig ist, jedoch noch schweißbar ist. Dieses Verschleißelement kann über eine Heftschweißung mit der Greiferschale verbunden sein.In the context of the invention, the wear element and high-tempered Material exist, which is very resistant, but still weldable is. This wear element can be tack welded to the hook shell be connected.

Gemäß einer vorteilhaften Ausbildung der Erfindung kann das Verschleißelement als Guss- oder Schmiedeteil gefertigt sein.According to an advantageous embodiment of the invention, the wear element be made as a cast or forged part.

Schließlich können die Verschleißelemente jeweils als Kreissegmente gestaltet sein, wobei sich hier der Vorteil ergibt, dass je nach Verschleiß die einzelnen Kreissegmente dann einzeln ausgetauscht werden können.Finally, the wear elements can each be designed as circular segments be, with the advantage that, depending on the wear, the individual circle segments then can be replaced individually.

Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus einem in der Zeichnung dargestellten Ausführungsbeispiel.Further details and advantages of the invention will become apparent from a in the Drawing illustrated embodiment.

Es zeigen:

Fig. 1:
eine Greiferschale eines erfindungsgemäßen Greifwerkzeugs in perspektivischer Ansicht.
Fig. 2:
das Greifwerkzeug nach Fig. 1 in frontaler Ansicht,
Fig. 3:
das Greifwerkzeug nach Fig. 1 in Seitenansicht und
Fig. 4:
das Greifwerkzeug gemäß Fig. 1 in Rückansicht.
Show it:
Fig. 1:
a gripper shell of a gripping tool according to the invention in a perspective view.
Fig. 2:
the gripping tool according to Fig. 1 in frontal view,
3:
the gripping tool according to Fig. 1 in side view and
4:
the gripping tool of FIG. 1 in rear view.

In Fig. 1 ist eine einzelne Greiferschale 10 eines erfindungsgemäßen Greifwerkzeugs, bestehend aus einem Zinken, gezeigt. Die Greiferschale 10 ist, wie in der Fig. 1, gekrümmt ausgeführt. Die Greiferschale 10 weist in üblicher Weise Lagerstellen 12 und 14 auf. Grundsätzlich sind die Greiferschalen 10 aus einem zähen aber nicht sehr widerstandsfähigen Material hergestellt. Um die Greiferschalen 10 insbesondere im äußerem Bereich gegen die Abrasion des zu greifenden Materials zu schützen, sind in der hier dargestellten Ausführungsvariante drei Verschleißteile 16, 18 und 20 derart auf die Greiferschale 10 aufgesetzt, dass hier die Hauptverschleißbereiche durch diese Verschleißelemente 16, 18 und 20 schützend abgedeckt sind. Im hier dargestellten Ausführungsbeispiel sind die Verschleißelemente 16, 18 und 20 als Gussteile ausgeführt, wobei alle drei Teile in Form von Kreissegmenten gestaltet sind.In Fig. 1 is a single gripper shell 10 of a gripping tool according to the invention, consisting of a tine, shown. The gripper cup 10 is, as in the Fig. 1, executed curved. The gripper shell 10 has bearings in the usual way 12 and 14 on. Basically, the gripper shells 10 are made of a tough but not made of very resistant material. To the gripper shells 10th especially in the outer area against the abrasion of the material to be gripped to protect, in the embodiment shown here are three wearing parts 16, 18 and 20 are placed on the hook tray 10 such that here the Hauptverschleißbereiche covered by these wear elements 16, 18 and 20 protective are. In the embodiment shown here are the wear elements 16, 18 and 20 executed as castings, all three parts in the form of circle segments are designed.

Seitlich weisen die Verschleißelemente, die den äußeren Umfang des Zinkens der Greiferschale 10 umschließen, Bohrungen 22 auf, durch die in hier nicht näher dargestellter Art und Weise Befestigungsschrauben steckbar und mit der Greiferschale 10 verschraubbar sind. Somit kann hier durch einfaches Lösen von vier Schrauben jeweils ein segmentartiges Verschleißelement 16, 18 oder 20 bei entsprechendem Verschleiß gezielt ausgewechselt werden, ohne dass die Greiferschale 10 ausgebaut werden muss. Ein besonderer Vorteil dieses einfachen Austausches des Verschleißelements durch eine mechanische Verbindung gegenüber einer Regenerierung durch Aufschweißen besteht auch darin, dass hier die mit dem Regenerierungsschweißen verbundene erzeugte Schrumpfspannungsgefahr, die eine Festigkeitsverminderung darstellt, sicher vermieden werden kann.Laterally, the wear elements that the outer circumference of the tine the Claw shell 10 enclose holes 22, through which not shown in detail here Way fixing screws pluggable and with the hook shell 10 are screwed. Thus, here by simply loosening four screws in each case a segment-like wear element 16, 18 or 20 at corresponding Wear can be selectively replaced without the claw shell 10 removed must become. A particular advantage of this simple replacement of the wear element by a mechanical connection to a regeneration by welding is also that here with the Regenerierungsschweißen Associated generated shrinkage stress, the strength reduction represents, can be safely avoided.

Claims (7)

Greifwerkzeug, vorzugsweise Mehrschalengreifer, mit mindestens einer Greiferschale mit mindestens einem Zinken,
dadurch gekennzeichnet, dass an der mindestens einen Greiferschale mindestens ein Verschleißelement derart angeordnet ist, daß die Hauptverschleißbereiche durch das mindestens eine Verschleißelement abgedeckt sind.Gripping tool, preferably multi-shell gripper, with at least one gripper shell with at least one prong,
characterized in that on the at least one gripper cup at least one wear element is arranged such that the main wear areas are covered by the at least one wear element. Greifwerkzeug nach Anspruch 1, dadurch gekennzeichnet, dass das mindestens eine Verschleißelement aus verschleißfestem Material besteht.Gripping tool according to claim 1, characterized in that the at least one wear element consists of wear-resistant material. Greifwerkzeug nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das mindestens eine Verschleißelement aus hoch verschleißbeständigem Material über Bolzen und/oder Schrauben mit der Greiferschale wieder lösbar verbunden ist.Gripping tool according to claim 1 or 2, characterized in that the at least one wear element made of highly wear-resistant material via bolts and / or screws with the gripper shell is releasably connected again. Greifwerkzeug nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass das mindestens eine Verschleißelement aus hoch verschleißbeständigem Material über eine Klebeverbindung mit der Greiferschale verbunden ist.Gripping tool according to one of claims 1 or 2, characterized in that the at least one wear element made of highly wear-resistant material is connected via an adhesive bond with the gripper shell. Greifwerkzeug nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass das mindestens eine Verschleißelement aus hochvergütetem Material über eine Heftschweißverbindung mit der Greiferschale lösbar verbunden ist.Gripping tool according to one of claims 1 or 2, characterized in that the at least one wear element made of high-quality material is releasably connected via a tack weld with the gripper shell. Greifwerkzeug nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das mindestens eine Verschleißelement als Guss- oder Schmiedeteil ausgebildet ist.Gripping tool according to one of claims 1 to 5, characterized in that the at least one wear element is designed as a cast or forged part. Greifwerkzeug nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Verschleißelemente als Kreissegmente gestaltet sind.Gripping tool according to one of claims 1 to 6, characterized in that the wear elements are designed as circular segments.
EP04030355A 2004-03-12 2004-12-21 Gripping tool Not-in-force EP1574473B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202004003910U DE202004003910U1 (en) 2004-03-12 2004-03-12 gripping tool
DE202004003910U 2004-03-12

Publications (2)

Publication Number Publication Date
EP1574473A1 true EP1574473A1 (en) 2005-09-14
EP1574473B1 EP1574473B1 (en) 2008-05-14

Family

ID=34802090

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04030355A Not-in-force EP1574473B1 (en) 2004-03-12 2004-12-21 Gripping tool

Country Status (5)

Country Link
US (1) US7344175B2 (en)
EP (1) EP1574473B1 (en)
AT (1) ATE395296T1 (en)
DE (2) DE202004003910U1 (en)
ES (1) ES2304577T3 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006059894A1 (en) * 2006-12-19 2008-06-26 Terex Gmbh Wear element and thus equipped component
CN102167233B (en) * 2011-03-21 2013-12-18 何嘉诚 Hydraulic rotating device of gripping apparatus
US9138829B2 (en) 2013-09-03 2015-09-22 Robert David Reid Pipe welding fixture
US20160153178A1 (en) * 2016-02-04 2016-06-02 Caterpillar Inc. Ground engaging tool with replaceable wear resistant cover
US10150651B2 (en) 2017-01-18 2018-12-11 Cranemasters, Inc. Tank car lifting apparatus
USD968745S1 (en) * 2020-09-14 2022-11-01 Cranemasters, Inc. Lifting arm
USD967592S1 (en) * 2020-09-14 2022-10-18 Cranemasters, Inc. Lifting arm

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1756642A1 (en) * 1968-06-20 1970-05-06 Demag Zug Gmbh Gripper in composite construction
US4907356A (en) * 1989-01-23 1990-03-13 Labounty Kenneth R Slipper bucket for grapple
DE3841940C1 (en) * 1988-12-13 1990-05-23 Liebherr-Hydraulikbagger Gmbh, 7951 Kirchdorf, De Crescent-shaped basic body of a blade of a multi-bladed grab
DE9102928U1 (en) * 1990-11-30 1991-05-29 Boehler Ladetechnik Vertriebs- U. Entwicklungsgesellschaft M.B.H., Kapfenberg, At

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8815474U1 (en) * 1988-12-13 1989-05-03 Liebherr-Hydraulikbagger Gmbh, 7951 Kirchdorf, De
US6000108A (en) * 1999-01-22 1999-12-14 Roan; Jing-Wen Towing hook structure
CA2358339C (en) * 2001-10-05 2010-06-15 Peninsula Alloy Inc. Wear plate assembly
DE10350540A1 (en) * 2003-10-29 2005-06-09 Liebherr-Hydraulikbagger Gmbh Grab or grab tool

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1756642A1 (en) * 1968-06-20 1970-05-06 Demag Zug Gmbh Gripper in composite construction
DE3841940C1 (en) * 1988-12-13 1990-05-23 Liebherr-Hydraulikbagger Gmbh, 7951 Kirchdorf, De Crescent-shaped basic body of a blade of a multi-bladed grab
US4907356A (en) * 1989-01-23 1990-03-13 Labounty Kenneth R Slipper bucket for grapple
DE9102928U1 (en) * 1990-11-30 1991-05-29 Boehler Ladetechnik Vertriebs- U. Entwicklungsgesellschaft M.B.H., Kapfenberg, At

Also Published As

Publication number Publication date
US7344175B2 (en) 2008-03-18
US20050200146A1 (en) 2005-09-15
ATE395296T1 (en) 2008-05-15
ES2304577T3 (en) 2008-10-16
EP1574473B1 (en) 2008-05-14
DE502004007128D1 (en) 2008-06-26
DE202004003910U1 (en) 2005-07-21

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