EP0407467A1 - Hammer-swinging mechanism. - Google Patents

Hammer-swinging mechanism.

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Publication number
EP0407467A1
EP0407467A1 EP89905578A EP89905578A EP0407467A1 EP 0407467 A1 EP0407467 A1 EP 0407467A1 EP 89905578 A EP89905578 A EP 89905578A EP 89905578 A EP89905578 A EP 89905578A EP 0407467 A1 EP0407467 A1 EP 0407467A1
Authority
EP
European Patent Office
Prior art keywords
hammer
swivel
axis
holder according
bolt
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
EP89905578A
Other languages
German (de)
French (fr)
Other versions
EP0407467B1 (en
Inventor
Alois Wimmer
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0407467A1 publication Critical patent/EP0407467A1/en
Application granted granted Critical
Publication of EP0407467B1 publication Critical patent/EP0407467B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/966—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements of hammer-type tools
    • 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
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3677—Devices to connect tools to arms, booms or the like allowing movement, e.g. rotation or translation, of the tool around or along another axis as the movement implied by the boom or arms, e.g. for tilting buckets

Definitions

  • the invention relates to a holder for a pivotable suspension of a camming hammer on an excavator boom or the like that can be folded about a horizontal axis, in which the cutting hammer is pivotally suspended transversely to the articulating plane about an axis lying in the articulated plane of the excavator boom.
  • the invention has for its object to provide a bracket of the type mentioned so that it is fully suitable for practical use. According to the invention this object is achieved in that the cutter hammer can be fixed in the desired pendulum pivot position with respect to the excavator boom by a positive coupling. As a result, the enormous shrinking forces are absorbed by a form-fitting coupling, whereby the coupling's knockout is kept as low as possible due to the form-fitting connection. Such designs according to the invention can thus also be used for the suspension of heavy hammering hammers.
  • the form-fitting coupling can be formed by a bolt and aligned bores that receive it.
  • the bolt can be displaceable in the axial direction by means of a hydraulic piston-cylinder unit, which enables the clutch device to be automatically disengaged or engaged.
  • guide bores can be arranged in eyelets on the part carrying the piston-cylinder unit and the locking bores can be arranged in a swivel tab on the other part in order to receive the bolt. This ensures that the hammer is securely fixed in relation to the excavator boom.
  • the locking holes can be arranged in the swivel bracket along a circular arc, the center of which lies on the axis of the swivel axis. Finally, the swivel bracket can reach between the eyelets, the free spacing of the eyelets corresponding approximately to the thickness of the swivel bracket. This ensures that the bolt is only slightly stressed on bending and mainly on shear.
  • FIG. 1 shows schematically a trench excavation with a conventionally suspended cutting hammer.
  • Fig. 2 illustrates schematically the trench excavation with a cutting hammer suspended according to the invention.
  • Fig. 3 is a detailed view of the swivel device.
  • FIG. 4 shows a side view, seen in the direction of arrow P of FIG. 3.
  • the cutter hammer 2 is articulated in a conventional manner, so that when the excavator arm 1 is bent, only the change in the pivoting position of the hammer in the direction of the bending movement can be achieved, but not transversely to Kink level.
  • the cross section of the truss is trapezoidal, which results in an increased amount of material to be removed. Furthermore, a larger amount of replacement material must then be returned when the bezel is filled up.
  • the cutting hammer 2 is connected to the excavator boom 1 via a swivel device 3, the swivel device 3 being provided on a quick-change device 4 in the present exemplary embodiment.
  • the swivel device 3 has a swivel axis 5 extending in the direction of the articulation plane of the excavator boom 1, about which the cutter hammer 2 can be swiveled with respect to the articulation plane of the excavator boom 1.
  • a form-fitting coupling device is provided, which consists of a bolt 6 running parallel to the pivot axis 5, two eyelets 7 and ⁇ and a pivot bracket 9. In the eyelets 7 and ⁇ are aligned guide holes, and 9 locking holes 10 are provided in the swivel tab.
  • the bolt 6 is displaceable in the axial direction by means of a hydraulic piston-cylinder unit 11.
  • the locking holes 10 are arranged along an arc, the center of which lies in the longitudinal axis of the pivot axis 5.
  • the middle locking hole is arranged so that the cutting hammer 2 is perpendicular to the chord 1 l device 4.
  • the remaining locking holes are offset by about 20 from the vertical. This angle corresponds approximately to the angle of inclination of the hammer, which is required in order to be able to scrape the side walls of the bezel 12 approximately vertically.
  • the peening hammer 2 is placed with the tip on the floor, the bolt 6 by means of the hydraulic piston-cylinder unit 11 from the guide bore in the eyelet 8 and from the locking bore 10 of the swivel bracket 9 pulled out. Then, by turning the boom 1, the cutter hammer 2 is pivoted with respect to the excavator boom 1 about the pivot axis 5, namely until the desired locking bore 10 is aligned with the guide bores in the eyelets 7 and 8. Then the pin 6 is inserted via the hydraulic piston-cylinder unit and held in the inserted position by the hydraulic piston-cylinder unit.
  • the hydraulic piston-cylinder unit 11 can be actuated in the usual manner from the driver's cab of the excavator. For the swiveling of the hammer 2 with respect to the excavator boom 1, there is therefore no need for additional operating personnel, but the swiveling operator can carry out the swiveling from the driver's cab alone.

Abstract

PCT No. PCT/AT89/00050 Sec. 371 Date Jan. 26, 1990 Sec. 102(e) Date Jan. 26, 1990 PCT Filed May 18, 1989 PCT Pub. No. WO89/11568 PCT Pub. Date Nov. 30, 1989.Mounting for a swingable suspension of a cutter hammer to a boom or the like which is tiltable about a horizontal axis, with the cutter hammer being floatingly suspended and swingable transversely to the tilting plane about an axis which extends in the tilting plane of the boom, wherein the cutter hammer (2) is locked in the desired swinging position relative to the boom (1) by a form-fitting coupling (6, 7, 8, 9).

Description

Hammerschwenkvorrichtung Hammer swivel device
Die Erfindung bezieht sich auf eine Halterung für eine schwenkbare Aufhängung eines Schrammhammers an einem um eine horizontale Achse knicKbaren Baggerausleger od. dgl., bei welcher der Schrämmhammer um eine in der Knickebene des Baggerauslegers liegende Achse quer zur Knickebene verschwenkbar pendelnd aufgehängt ist.The invention relates to a holder for a pivotable suspension of a camming hammer on an excavator boom or the like that can be folded about a horizontal axis, in which the cutting hammer is pivotally suspended transversely to the articulating plane about an axis lying in the articulated plane of the excavator boom.
Mit herkömmlich am Baggerausleger unverschwenkbar aufgehängten Schrämmhämmern war es nicht möglich, rechteckigen Querschnitt aufweisende Künetten auszuheben, da es aufgrund der Absenkung der Schrämmhammer in einer vertikalen Ebene nur möglich war, Künetten mit trapezförmigem Querschnitt auszuheben, u.zw. aufgrund der Breite der Schrämmhammereinrichtung, welche das eigentliche Schrämmwerkzeug seitlich deutlich überragt, so daß ein geradliniges bzw. vertikales Abstechen der Grabenwandung nicht möglich ist.It was not possible to excavate cunettes with a rectangular cross-section using conventionally suspended swiveling hammers on the excavator boom, since, due to the lowering of the cutting hammer in a vertical plane, it was only possible to excavate cunettes with a trapezoidal cross-section, etc. due to the width of the cutting hammer device, which clearly protrudes laterally from the actual cutting tool, so that a straight or vertical parting of the trench wall is not possible.
Es war daher bei Ausbildungen der eingangs genannten Art bereits vorgesehen, den Schrämmhammer am Baggerausleger quer zur Knickebene des Baggerarmes verschwenkbar zu lagern, wobei bei dieser bekannten Ausbildung die Schrägstellung und Festlegung des Schrammhammers mittels einer hydraulischen Kolben-Zylinder-Einrichtung vorgenommen wurde. Diese Ausbildungen waren jedoch in der Praxis nicht einsetzbar, weil die hydraulische Kolben-Zylinder-Einheit, welche die Verschwenkung und Festlegung des Schrammhammers bewirkte, die Schläge, die der Schrämmhammer auf den Untergrund ausübt, aufnehmen mußte, um ein seitliches Ausweichen des Schrammhammers zu vermeiden. Diese bekannten Ausbildungen waren somit für den praktischen Einsatz nicht geeignet.It was therefore already provided in designs of the type mentioned at the outset that the cutter hammer on the excavator boom could be pivoted transversely to the buckling plane of the excavator arm, with this known design the inclination and fixing of the cutter hammer being carried out by means of a hydraulic piston-cylinder device. However, these designs could not be used in practice because the hydraulic piston-cylinder unit, which caused the pivoting and fixing of the peening hammer, had to absorb the blows which the peening hammer exerts on the ground in order to avoid lateral deflection of the peening hammer . These known designs were therefore not suitable for practical use.
Der Erfindung liegt die Aufgabe zugrunde, eine Halterung der eingangs genannten Art so auszubilden, daß sie für den praktischen Einsatz voll tauglich ist. Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß der Schrämmhammer in der gewünschten Pendel schwenklage bezüglich des Baggerauslegers durch eine formschlüssige Kupplung festlegbar ist. Dadurch werden die enormen Schrβmmkräfte durch eine formschlüssige Kupplung aufgenommen, wobei aufgrund der Formschlüssigkeit das Ausschla en der Kupplung möglichst gering gehalten ist. Derartige erfindungsgemäße Ausbildungen können damit auch zur Aufhängung schwerer Schrämmhammer eingesetzt werden.The invention has for its object to provide a bracket of the type mentioned so that it is fully suitable for practical use. According to the invention this object is achieved in that the cutter hammer can be fixed in the desired pendulum pivot position with respect to the excavator boom by a positive coupling. As a result, the enormous shrinking forces are absorbed by a form-fitting coupling, whereby the coupling's knockout is kept as low as possible due to the form-fitting connection. Such designs according to the invention can thus also be used for the suspension of heavy hammering hammers.
Vorteilhafterweise kann die formschlüsεige Kupplung durch einen Bolzen und diesen aufnehmende, fluchtende Bohrungen gebildet sein. Dadurch wird erreicht, daß die Kupplung hohe Kräfte aufnehmen kann, da die Bol7en in bezug auf die Bohrungen sehr genau ausgelegt werden können. Dabei kann der Bolzen mittels einer hydraulischen Kolben-Zylinder-Einheit in Axialrichtung verschiebbor sein, wodurch ein automatisches Aus- bzw. Einkuppeln der Kupplungseinrichtung ermöglicht ist. Dabei können zur Aufnahme des Bolzens Führungsbohrungen in ösen an dem die Kolben-Zylinder-Einheit tragenden Teil und die Verriegelungsbohrungen in einer Schwenklasche am anderen Teil angeordnet sein. Dadurch wird eine sichere Festlegung des Schrammhammers in bezug auf den Baggerausleger erreicht. Dabei können die Verriegelungsbohrungen in der Schwenklasche entlang eines Kreisbogens angeordnet sein, dessen Mittelpunkt auf der Achse der Schwenkachse liegt. Schließlich kann die Schwenklasche zwischen die ösen hineingreifen, wobei der freie Abstand der ösen etwa der Dicke der Schwenklasche enspricht. Dadurch wird erzielt, daß der Bolzen nur geringfügig auf Biegung und hauptsächlich auf Abscherung beansprucht wird.Advantageously, the form-fitting coupling can be formed by a bolt and aligned bores that receive it. This ensures that the coupling can absorb high forces, since the bolts can be designed very precisely in relation to the bores. The bolt can be displaceable in the axial direction by means of a hydraulic piston-cylinder unit, which enables the clutch device to be automatically disengaged or engaged. In this case, guide bores can be arranged in eyelets on the part carrying the piston-cylinder unit and the locking bores can be arranged in a swivel tab on the other part in order to receive the bolt. This ensures that the hammer is securely fixed in relation to the excavator boom. The locking holes can be arranged in the swivel bracket along a circular arc, the center of which lies on the axis of the swivel axis. Finally, the swivel bracket can reach between the eyelets, the free spacing of the eyelets corresponding approximately to the thickness of the swivel bracket. This ensures that the bolt is only slightly stressed on bending and mainly on shear.
In der Zeichnung ist ein Ausführungsbeispiel des Erfindungs gegenstandes dargestellt.In the drawing, an embodiment of the subject matter of the invention is shown.
Fig. 1 zeigt schematisch einen Grabenaushub mit einem herkömmlich aufgehängten Schrämmhammer. Fig. 2 veranschaulicht schematisch den Grabenaushub mit einem erfindungsgemäß aufgehängten Schrämmhammer.Fig. 1 shows schematically a trench excavation with a conventionally suspended cutting hammer. Fig. 2 illustrates schematically the trench excavation with a cutting hammer suspended according to the invention.
Fig. 3 ist eine Detailansicht der Schwenkvorrichtung.Fig. 3 is a detailed view of the swivel device.
Fig. 4 zeigt eine Seitenansicht, in Richtung des Pfeiles P der Fig. 3 gesehen.FIG. 4 shows a side view, seen in the direction of arrow P of FIG. 3.
Am Baggerausleger 1 ist gemäß Fig. 1 der Schrämmhammer 2 in herkömmlicher Weise gelenkig angebracht, so daß bei Knicken des Baggerarmes 1 lediglich die Änderung der Schwenklage des Schrammhammers in Richtung der Knickbewegung erzielbar ist, nicht jedoch quer zur Knickebene. Wie aus Fig. 1 ersichtlich, ist die Künette im Querschnitt trapezförmig, was ein erhöhtes Aufkommen an abzutransportierendem Material ergibt. Weiters muß dann bei Zuschütten der Künette eine größere Menge an Austauschmaterial wieder rückgeführt werden.1, the cutter hammer 2 is articulated in a conventional manner, so that when the excavator arm 1 is bent, only the change in the pivoting position of the hammer in the direction of the bending movement can be achieved, but not transversely to Kink level. As can be seen from FIG. 1, the cross section of the truss is trapezoidal, which results in an increased amount of material to be removed. Furthermore, a larger amount of replacement material must then be returned when the bezel is filled up.
Gemäß Fig. 2 ist der Schrämmhammer 2 über eine Schwenkeinrichtung 3 mit dem Baggerausleger 1 verbunden, wobei die Schwenkeinrichtung 3 bei vorliegendem Ausführungsbeispiel an einer Schnellwechseleinrichtung 4 vorgesehen ist. Die Schwenkeinrichtung 3 weist eine in Richtung der Knickebene des Baggerβuslegers 1 verlaufende Schwenkachse 5 auf, um welche der Schrämmhammer 2 in bezug auf die Knickebene des Baggerauslegers 1 verschwenkbar ist. Zur Festlegung des Schrammhammers 2 in bezug auf den Baggerausleger 1 ist eine formschlüssige Kupplungseinrichtung vorgesehen, welche aus einem parallel zur Schwenkachse 5 verlaufenden Bolzen 6, zwei ösen 7 und θ und einer Schwenklasche 9 besteht. In den ösen 7 und θ sind miteinander fluchtende Führungsbohrungen, und in der Schwenklasche 9 Verriegelungsbohrungen 10 vorgesehen. Der Bolzen 6 ist dabei mittels einer hydraulischen Kolben-Zylinder-Einheit 11 in Axialrichtung verschiebbar.2, the cutting hammer 2 is connected to the excavator boom 1 via a swivel device 3, the swivel device 3 being provided on a quick-change device 4 in the present exemplary embodiment. The swivel device 3 has a swivel axis 5 extending in the direction of the articulation plane of the excavator boom 1, about which the cutter hammer 2 can be swiveled with respect to the articulation plane of the excavator boom 1. To fix the hammer 2 with respect to the excavator boom 1, a form-fitting coupling device is provided, which consists of a bolt 6 running parallel to the pivot axis 5, two eyelets 7 and θ and a pivot bracket 9. In the eyelets 7 and θ are aligned guide holes, and 9 locking holes 10 are provided in the swivel tab. The bolt 6 is displaceable in the axial direction by means of a hydraulic piston-cylinder unit 11.
Wie aus Fig. 3 ersichtlich, sind die Verriegel ungsbohrungen 10 entlang eines Kreisbogens angeordnet, dessen Mittelpunkt in der Längsachse der Schwenkachse 5 liegt. Bei vorliegendem Ausführungsbeispiel ist die mittlere Verriegelungsbohrung so angeordnet, daß der Schrämmhammer 2 in bezug auf die Sehne 1 lwechsel Vorrichtung 4 senkrecht steht. Die übrigen Verriegelungsbohrungen sind gegenüber der Vertikalen um etwa 20 versetzt. Dieser Winkel entspricht etwa dem Neigungswinkel des Schrammhammers, welcher erforderlich ist, um die Seitenwandungen der Künette 12 annähernd vertikal abschrammen zu können. Soll mittels des Schrammhammers die Seitenwand bearbeitet werden, dann wird der Schrämmhammer 2 mit der Spitze auf dem Boden aufgestellt, der Bolzen 6 mittels der hydraulischen Kolben-Zylinder-Einheit 11 aus der in der öse 8 befindlichen Führungsbohrung und aus der Verriegelungsbohrung 10 der Schwenklasche 9 herausgezogen. Danach wird durch Verdrehen des Auslegers 1 der Schrämmhammer 2 in bezug auf den Baggerausleger 1 um die Schwenkachse 5 verschwenkt, und zwar so weit, bis die gewünschte Verriege lungsbαhrung 10 mit den Führungsbohrungen in den ösen 7 und 8 fluchtet. Danach wird über die hydraulische Kolben-Zylinder-Einheit der Bolzen 6 eingeschoben und durch die hydraulische Kolben-Zylinder-Einheit in der eingeschobenen Stellung gehalten. Das Betätigen der hydraulischen Kolben-Zylinder-Einheit 11 kann dabei in üblicher Weise vom Führerstand des Baggers aus erfolgen. Für das Verschwenken des Schrammhammers 2 in bezug auf den Baggerausleger 1 braucht somit kein Bedienungspersonal zusätzlich vorgesehen zu werden, sondern das Verschwenken kann der Baggerführer vom Führerstand aus allein vornehmen. As can be seen from Fig. 3, the locking holes 10 are arranged along an arc, the center of which lies in the longitudinal axis of the pivot axis 5. In the present embodiment, the middle locking hole is arranged so that the cutting hammer 2 is perpendicular to the chord 1 l device 4. The remaining locking holes are offset by about 20 from the vertical. This angle corresponds approximately to the angle of inclination of the hammer, which is required in order to be able to scrape the side walls of the bezel 12 approximately vertically. If the side wall is to be machined using the peening hammer, then the peening hammer 2 is placed with the tip on the floor, the bolt 6 by means of the hydraulic piston-cylinder unit 11 from the guide bore in the eyelet 8 and from the locking bore 10 of the swivel bracket 9 pulled out. Then, by turning the boom 1, the cutter hammer 2 is pivoted with respect to the excavator boom 1 about the pivot axis 5, namely until the desired locking bore 10 is aligned with the guide bores in the eyelets 7 and 8. Then the pin 6 is inserted via the hydraulic piston-cylinder unit and held in the inserted position by the hydraulic piston-cylinder unit. The hydraulic piston-cylinder unit 11 can be actuated in the usual manner from the driver's cab of the excavator. For the swiveling of the hammer 2 with respect to the excavator boom 1, there is therefore no need for additional operating personnel, but the swiveling operator can carry out the swiveling from the driver's cab alone.

Claims

Patentansprüche: Claims:
1. Halterung für eine schwenkbare Aufhängung eines Schrammhammers an einem um eine horizontale Achse knickbaren Baggerausleger od. dgl., bei welcher der Schrämmhammer um eine in der Knickebene des Baggerausle- gers liegende Achse quer zur Knickebene verschwenkbar pendelnd aufgehängt ist, dadurch gekennzeichnet, daß der Schrämmhammer (2) in der gewünschten Pendelschwenklage bezüglich des Baggerauslegers (1) durch eine formschlüssige Kupplung (6, 7, 8, 9) festlegbar ist. 1. Holder for a pivotable suspension of a claw hammer on an excavator boom or the like which can be bent about a horizontal axis, in which the cutter hammer is suspended so as to be pivotable transversely to the kink plane about an axis lying in the articulation plane of the excavator boom, characterized in that the Cutter hammer (2) can be fixed in the desired pendulum swivel position with respect to the excavator boom (1) by means of a positive coupling (6, 7, 8, 9).
2. Halterung nach Anspruch 1, dadurch gekennzeichnet, daß die formschlüssige Kupplung durch einen Bolzen (6} und diesen aufnehmende, fluchtende Bohrungen gebildet ist.2. Holder according to claim 1, characterized in that the positive coupling is formed by a bolt (6} and this receiving, aligned holes.
3. Halterung nach Anspruch 2, dadurch gekennzeich- net, daß der Bolzen (6) mittels einer hydraulischen3. Holder according to claim 2, characterized in that the bolt (6) by means of a hydraulic
Kolben-Zylinder-Einheit (11) in Axialrichtung verschiebbar ist.Piston-cylinder unit (11) is displaceable in the axial direction.
4. Halterung nach Anspruch 3, dadurch gekennzeichnet, daß zur Aufnahme des Bolzens (6) Führungsbohrungen in ösen (7, 8) an dem die Kolben-Zylinder-Einheit (11) tragenden Teil und die Verriegelungsbohrungen ( 10) in einer Schwenklasche (9) am anderen Teil angeordnet sind.4. Holder according to claim 3, characterized in that for receiving the bolt (6) guide holes in eyelets (7, 8) on the piston-cylinder unit (11) supporting part and the locking holes (10) in a swivel tab (9th ) are arranged on the other part.
5. Halterung nach Anspruch 4, dadurch gekennzeichnet, daß die Verriegelungsbohrungen (10) in der Schwenklasche (9) entlang eines Kreisbogens angeordnet sind, dessen Mittelpunkt auf der Achse der Schwenkachse C5) liegt.5. Holder according to claim 4, characterized in that the locking bores (10) in the swivel tab (9) are arranged along an arc, the center of which lies on the axis of the swivel axis C5).
6. Halterung nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß die Schwenklasche (9) zwischen die ösen (7, 8) hineingreift, wobei der freie Abstand der ösen (7, 8) etwa der Dicke der Schwenklasche (9) entspricht. 6. Holder according to claim 4 or 5, characterized in that the swivel bracket (9) engages between the eyelets (7, 8), the free distance between the eyelets (7, 8) corresponds approximately to the thickness of the swivel bracket (9).
EP89905578A 1988-05-20 1989-05-18 Hammer-swinging mechanism Expired - Lifetime EP0407467B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT1327/88 1988-05-20
AT0132788A AT390645B (en) 1988-05-20 1988-05-20 HAMMER SWIVELING DEVICE
PCT/AT1989/000050 WO1989011568A1 (en) 1988-05-20 1989-05-18 Hammer-swinging mechanism

Publications (2)

Publication Number Publication Date
EP0407467A1 true EP0407467A1 (en) 1991-01-16
EP0407467B1 EP0407467B1 (en) 1994-07-27

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EP89905578A Expired - Lifetime EP0407467B1 (en) 1988-05-20 1989-05-18 Hammer-swinging mechanism

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US (1) US5111888A (en)
EP (1) EP0407467B1 (en)
AT (2) AT390645B (en)
DE (2) DE8808827U1 (en)
WO (1) WO1989011568A1 (en)

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US5111888A (en) 1992-05-12
EP0407467B1 (en) 1994-07-27
ATE109235T1 (en) 1994-08-15
ATA132788A (en) 1989-11-15
DE58908117D1 (en) 1994-09-01
AT390645B (en) 1990-06-11
DE8808827U1 (en) 1988-09-08
WO1989011568A1 (en) 1989-11-30

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