EP0685302A1 - Tool aggregate with handtool and portable hydraulic pump - Google Patents

Tool aggregate with handtool and portable hydraulic pump Download PDF

Info

Publication number
EP0685302A1
EP0685302A1 EP95108149A EP95108149A EP0685302A1 EP 0685302 A1 EP0685302 A1 EP 0685302A1 EP 95108149 A EP95108149 A EP 95108149A EP 95108149 A EP95108149 A EP 95108149A EP 0685302 A1 EP0685302 A1 EP 0685302A1
Authority
EP
European Patent Office
Prior art keywords
tool
hydraulic pump
hand tool
control switch
line
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
EP95108149A
Other languages
German (de)
French (fr)
Other versions
EP0685302B1 (en
Inventor
Gerhard Hellebrandt
Thilo Weber
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.)
Rothenberger Werkzeuge AG
Original Assignee
Rothenberger Werkzeugemaschinen 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
Priority claimed from DE4446502A external-priority patent/DE4446502A1/en
Application filed by Rothenberger Werkzeugemaschinen GmbH filed Critical Rothenberger Werkzeugemaschinen GmbH
Publication of EP0685302A1 publication Critical patent/EP0685302A1/en
Application granted granted Critical
Publication of EP0685302B1 publication Critical patent/EP0685302B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/146—Clip clamping hand tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/12—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears
    • B25B7/126—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears with fluid drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/005—Hydraulic driving means

Definitions

  • the invention relates to a tool assembly consisting of a hand tool with a built-in hydraulic drive and a portable, electrically connected hydraulic pump connected to the hand tool via a pressure hose with a control switch connected via a control line.
  • a hand tool of the type described above, but without a control switch and control line and only with a connection for a pressure hose is known from DE-PS 21 36 742. This known tool can only be used with an external control switch.
  • a portable, battery-operated hydraulic pump is known from the "WALKPAC" brochure from Enerpac Applied Power GmbH in Düsseldorf, for which applications for driving tools are specified.
  • the case-like housing which has a handle and a shoulder strap, is connected to a control switch via a flexible cable so that the pump can be switched on and off by hand.
  • the switch operation proves to be useful for a number of hand tools as extremely difficult, which must be held with both hands, be it because of the high weight, because of the precise use of tools with regard to the workpiece, or because of the need to carry out further manipulations on the hand tool itself.
  • the known hydraulic pump would make the so-called "third hand" necessary for such hand tools.
  • the hand tools described above include, for example, pressing tongs and disk tongs, which are used to connect pipe ends with the interposition of coupling pieces, which consist of a sleeve and two sleeve-shaped parts, between which the pipe ends must be positively and absolutely tight.
  • coupling pieces which consist of a sleeve and two sleeve-shaped parts, between which the pipe ends must be positively and absolutely tight.
  • ready-made coupling units have been developed, which can be divided into two groups.
  • connection In the first group, two pipe ends that have been pushed onto a sleeve are fixed by radially pressing deformable sleeves. In the second group, two pipe ends fixed on a sleeve are connected to one another by axially pushing on sleeves of a correspondingly small diameter. In both cases, the connection must be reliable and permanent against tensile and compressive loads, in particular the line connections must be made absolutely tight. Depending on the type of connection, one speaks of pressing tools or pushing tools or pressing tongs and pushing pliers. Metal, such as copper, for example, may very well be used as the material for the piping. An important area of application is the production of heating systems, especially underfloor heating.
  • the axis of the pliers jaw or the direction of movement of the sliding jaws must coincide with the axis of the line connection.
  • the longitudinal axis of the hand tool must be aligned exactly at right angles to the axis of the line connection and held in this position for the duration of the pressing or sliding process.
  • the hand tools in question are relatively heavy, and in the so-called pressing tongs the two jaws have to be opened by hand to place the pressing jaws on the line connection, because such pressing tongs only have a one-way drive. This peculiarity will be discussed in more detail in connection with the detailed description.
  • the invention is therefore based on the object of specifying a tool assembly of the type described at the outset, in which the hand tool can be held reliably and fatigue-free with both hands before, during and after the machining process, so that a precise use of tools is made possible.
  • control switch is structurally combined with the hand tool.
  • This unit of control switch and hand tool ensures that the operator does not have to first look for a control switch lying around or hanging around, but instead finds it in the grip area of the hand tool itself.
  • the hydraulic hand tool is therefore not only connected to the hydraulic pump and its control devices via a pressure hose, but also via a control line.
  • the operator can not only carefully and precisely guide the tool with regard to the required work process and over the Also keep the duration of the work process, but continue to carry out further manipulations on the tool itself, should this be necessary for certain tool types. Handling is also largely fatigue-free, although most hydraulically driven tools have a considerable weight.
  • the hand tool has at least one gripping surface and if the control switch is integrated into the hand tool in the vicinity of the gripping surface in such a way that it can be actuated without releasing the gripping surface.
  • hydraulic pump its electric drive motor and a rechargeable power source are installed in a portable housing which is provided with holding devices for fastening on the back of an operator.
  • the hydraulic drive is designed in such a way that the pressing process ends in a maximum of 6 seconds, preferably in a maximum of 4 seconds, depending on the pressure and degree of delivery of the portable hydraulic pump which can be driven by a rechargeable power source and the deformation properties of the line connection is.
  • the tool assembly consists of a hand tool 1 and a portable housing 2, in which a rechargeable power source 3, a pump sump 4, a hydraulic pump 5 and an electric motor 6 for driving it are arranged.
  • the electric motor 6 is fed by the current source 3 with appropriate control.
  • the housing 2 is provided on its one end face with a connecting piece 7 for a coupling 8 of a pressure hose 9 and with a plug connection 10 for connecting a coupling 11 of a control line 12.
  • the housing 2 has a handle 13 and holding devices, not shown here, for fastening on the back of an operator.
  • the hand tool 1 consists of a so-called basic device 14 and a tool head 15 which can be exchangeably fastened to it.
  • the basic device 14 includes a housing 16 with a handle 17, which forms a gripping surface 18 on its circumference. In the immediate vicinity of this gripping surface 18, an electrical control switch 19 is arranged in the housing 16, which is connected to the control line 12.
  • a gland screw connection 20 is used for the moisture-tight passage of the control line 12.
  • a hydraulic drive 21 which consists of a hydraulic cylinder 22 with a piston 23, piston rings 24 and a piston rod 25.
  • the hydraulic cylinder 22 is screwed into the housing 16 and fixed by a lock nut 26.
  • a compression spring 27 which is guided partly by the piston rod 25 and partly by a guide sleeve 28.
  • an intermediate piece 29 with a flange part 30 is further screwed, which carries a bearing ring 31 for the piston rod 25 in a coaxial bore.
  • the aforementioned tool head 15 is connected to said flange part 30 via a plurality of screws 32, only one of which is visible which includes a press jaw housing 33 which is provided with a further flange part 34. Inside the press jaw housing 33 there is a cross head 35 with two control rollers 36, of which only the upper one is visible due to the selected cut. The two control rollers are mounted on parallel pins 37, the ends of which are in turn fixed in the crosshead 35.
  • the crosshead 35 is connected to the piston rod 25 in the manner shown and is driven by it.
  • the press jaw housing 33 consists of two shell-shaped halves which are held together by a screw 38.
  • the press jaw housing 33 is fork-shaped and provided with a diametrically continuous recess 39 into which two double-armed press jaws 40 and 41 partially protrude.
  • the press jaws 40 and 41 are mounted on two parallel pivot pins 42 and 43 and are held in the stable position shown by a compression spring 44.
  • the pivot pins 42 and 43 are mounted at the end of the press jaw housing 33.
  • a jaw 45 is formed between the press jaws 40 and 41, which is used for the radial pressing of so-called line connectors.
  • the legs of the pressing jaws 40 and 41 on this side have further gripping surfaces 46 and 47 by means of which the pressing jaws 40 and 41 can be pressed further into the recess 39 by hand.
  • the gripping surfaces 46 and 47 are relieved, so that the previously compressed compression spring 44 closes the pliers mouth 45 as far as the line connector therein with the line ends permits.
  • control switch 19 is now actuated, which sets the hydraulic pump 5 into operation via the control line 12, so that the piston 23 is pressurized via the pressure hose 9 and displaced to the right.
  • This piston movement is followed by the control rollers 36, which in this case run onto two control surfaces 48, only the upper one is visible.
  • the control surfaces 48 have the effect of inclined planes with respect to the tool axis AA, ie under the action of the control rollers 36 and the control surfaces 48 the forceps jaw 45 is closed with great force and the pressing process is carried out.
  • the outer surface of the press jaw housing 33 serves as a further gripping surface in order to be able to hold the tool reliably in the selected position. In other words: the operator has both hands on the hand tool 1.
  • the pressing jaws 40 and 41 can be exchanged together with the pivot pins 42 and 43 as a structural unit and are held in the pressing jaw housing 33 by means of a tab 49 and a cylindrical pin 50 for this purpose. After loosening the cylindrical pin 50, it is possible in a simple manner to replace the outer part of the tool head 15 and to replace it by a set of press jaws with a jaw 45 with different diameters or differently shaped press surfaces.
  • the tool assembly according to the invention is an easily transportable implement with which line connections can be made reliably, quickly and in a manner which saves energy.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Harvester Elements (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)

Abstract

The tool has hand-held pliers (1), coupled via a pressure line (9) to a portable electrically-driven hydraulic pump (5). The pump is operated via a control switch (19), connected to a control line (12), extending between the hand-held pliers and the pump. Pref. the pliers have at least one grip surface (18), with the control switch incorporated in the pliers adjacent the grip surface, so that it is operated automatically upon the grip surface being released, for cut-off of the pump drive. <IMAGE>

Description

Die Erfindung betrifft ein Werkzeugaggregat, bestehend aus einem Handwerkzeug mit einem eingebauten Hydraulikantrieb sowie aus einer tragbaren, über einen Druckschlauch mit dem Handwerkzeug verbundenen, elektrisch angetriebenen Hydraulikpumpe mit einem über eine Steuerleitung angeschlossenen Steuerschalter.The invention relates to a tool assembly consisting of a hand tool with a built-in hydraulic drive and a portable, electrically connected hydraulic pump connected to the hand tool via a pressure hose with a control switch connected via a control line.

Ein Handwerkzeug der vorstehend beschriebenen Art, jedoch ohne Steuerschalter und Steuerleitung und nur mit einem Anschluß für einen Druckschlauch ist durch die DE-PS 21 36 742 bekannt. Dieses bekannte Werkzeug kann nur mit einem externen Steuerschalter eingesetzt werden.A hand tool of the type described above, but without a control switch and control line and only with a connection for a pressure hose is known from DE-PS 21 36 742. This known tool can only be used with an external control switch.

Durch den Prospekt "WALKPAC" der Firma Enerpac Applied Power GmbH in Düsseldorf ist eine tragbare, batteriebetriebene Hydraulikpumpe bekannt, für die Anwendungen zum Antrieb von Werkzeugen angegeben sind. Das kofferähnliche Gehäuse, das einen Tragegriff und einen Schultergurt aufweist, ist über eine flexible Leitung mit einem Steuerschalter verbunden, um die Pumpe von Hand ein- und ausschalten zu können. Die Schalterbetätigung erweist sich jedoch für eine Reihe von Handwerkzeugen als extrem schwierig, die selbst mit beiden Händen gehalten werden müssen, sei es wegen des hohen Gewichts, sei es wegen des präzisen Werkzeugeinsatzes im Hinblick auf das Werkstück, sei es im Hinblick auf die Notwendigkeit, am Handwerkzeug selbst noch weitere Manipulationen vornehmen zu müssen. Für derartige Handwerkzeuge würde die bekannte Hydraulikpumpe die sogenannte "dritte Hand" erforderlich machen.A portable, battery-operated hydraulic pump is known from the "WALKPAC" brochure from Enerpac Applied Power GmbH in Düsseldorf, for which applications for driving tools are specified. The case-like housing, which has a handle and a shoulder strap, is connected to a control switch via a flexible cable so that the pump can be switched on and off by hand. However, the switch operation proves to be useful for a number of hand tools as extremely difficult, which must be held with both hands, be it because of the high weight, because of the precise use of tools with regard to the workpiece, or because of the need to carry out further manipulations on the hand tool itself. The known hydraulic pump would make the so-called "third hand" necessary for such hand tools.

Zu den vorstehend beschriebenen Handwerkzeugen gehören beispielhaft Preßzangen und Scheibe-zangen, die zur Verbindung von Rohrleitungsenden unter Zwischenschaltung von Kupplungsstücken dienen, die aus einer Hülse und zwei muffenförmigen Teilen bestehen, zwischen denen die Rohrleitungsenden formschlüssig und absolut dicht festgelegt werden müssen. Für die Verbindung von Rohrleitungsenden wurden konfektioniert im Handel befindliche Kupplungseinheiten entwickelt, die sich in zwei Gruppen einteilen lassen.The hand tools described above include, for example, pressing tongs and disk tongs, which are used to connect pipe ends with the interposition of coupling pieces, which consist of a sleeve and two sleeve-shaped parts, between which the pipe ends must be positively and absolutely tight. For the connection of pipe ends, ready-made coupling units have been developed, which can be divided into two groups.

Bei der ersten Gruppe werden zwei Rohrleitungsenden, die auf eine Hülse aufgeschoben worden sind, durch radiales Verpressen verformbarer Muffen festgelegt. Bei der zweiten Gruppe werden zwei auf einer Hülse festgelegte Rohrleitungsenden durch axiales Aufschieben von Muffen entsprechend geringen Durchmessers miteinander verbunden. In beiden Fällen muß die Verbindung zuverlässig und dauerhaft gegenüber Zug- und Druckbeanspruchungen erfolgen, insbesondere müssen die Leitungsverbindungen absolut dicht hergestellt werden. Je nach der Herstellungsart der Verbindung spricht man von Preßwerkzeugen oder von Schiebewerkzeugen bzw. Preßzangen und Schiebezangen. Als Leitungsmaterial für die Rohrleitungen kommt hierbei Metall, wie beispielhaft Kupfer, sehr wohl aber auch Kunststoff in Frage. Ein wichtiges Anwendungsgebiet ist dabei die Herstellung von Heizungssystemen, insbesondere von Fußbodenheizungen.In the first group, two pipe ends that have been pushed onto a sleeve are fixed by radially pressing deformable sleeves. In the second group, two pipe ends fixed on a sleeve are connected to one another by axially pushing on sleeves of a correspondingly small diameter. In both cases, the connection must be reliable and permanent against tensile and compressive loads, in particular the line connections must be made absolutely tight. Depending on the type of connection, one speaks of pressing tools or pushing tools or pressing tongs and pushing pliers. Metal, such as copper, for example, may very well be used as the material for the piping. An important area of application is the production of heating systems, especially underfloor heating.

Sowohl beim Einsatz von Preßzangen als auch von Schiebezangen muß die Achse des Zangenmauls bzw. die Bewegungsrichtung der Schiebebacken mit der Achse der Leitungsverbindung zusammenfallen. In der Regel muß also die Längsachse des Handwerkzeugs genau rechtwinklig zur Achse der Leitungsverbindung ausgerichtet und in dieser Lage für die Dauer des Preß- bzw. Schiebevorganges gehalten werden. Die betreffenden Handwerkzeuge sind verhältnismäßig schwer, und bei den sogenannten Preßzangen müssen zum Aufsetzen der Preßbacken auf die Leitungsverbindung noch die beiden Zangenbacken von Hand geöffnet werden, weil derartige Preßzangen nur einen einseitig wirkenden Antrieb aufweisen. Auf diese Besonderheit wird noch im Zusammenhang mit der Detailbeschreibung näher eingegangen werden.Both when using crimping pliers and pushing pliers, the axis of the pliers jaw or the direction of movement of the sliding jaws must coincide with the axis of the line connection. As a rule, the longitudinal axis of the hand tool must be aligned exactly at right angles to the axis of the line connection and held in this position for the duration of the pressing or sliding process. The hand tools in question are relatively heavy, and in the so-called pressing tongs the two jaws have to be opened by hand to place the pressing jaws on the line connection, because such pressing tongs only have a one-way drive. This peculiarity will be discussed in more detail in connection with the detailed description.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Werkzeugaggregat der eingangs beschriebenen Gattung anzugeben, bei dem das Handwerkzeug vor, während und nach dem Bearbeitungsvorgang zuverlässig und ermüdungsfrei mit beiden Händen gehalten werden kann, so daß ein präziser Werkzeugeinsatz ermöglicht wird.The invention is therefore based on the object of specifying a tool assembly of the type described at the outset, in which the hand tool can be held reliably and fatigue-free with both hands before, during and after the machining process, so that a precise use of tools is made possible.

Die Lösung der gestellten Aufgabe erfolgt bei dem eingangs angegebenen Werkzeugaggregat erfindungsgemäß dadurch, daß der Steuerschalter mit dem Handwerkzeug baulich vereint ist.The object is achieved in the above-mentioned tool assembly according to the invention in that the control switch is structurally combined with the hand tool.

Durch diese Einheit von Steuerschalter und Handwerkzeug wird gewährleistet, daß die Bedienungsperson nicht erst nach einem herumliegenden oder herumhängenden Steuerschalter suchen muß, sondern diesen im Griffbereich des Handwerkzeugs selbst vorfindet. Beim Erfindungsgegenstand ist somit das hydraulische Handwerkzeug nicht nur über einen Druckschlauch, sondern auch über eine Steuerleitung mit der hydraulischen Pumpe und deren Steuereinrichtungen verbunden. Dadurch kann die Bedienungsperson nicht nur das Werkzeug im Hinblick auf den erforderlichen Arbeitsvorgang sorgfältig und genau führen und über die Dauer des Arbeitsvorganges auch halten, sondern weiterhin weitere Manipulationen am Werkzeug selbst vornehmen, falls dies bei bestimmten Werkzeugtypen erforderlich sein sollte. Die Handhabung ist dabei auch weitgehend ermüdungsfrei, obwohl die meisten hydraulisch angetriebenen Werkzeuge ein nicht unbeträchtliches Gewicht haben.This unit of control switch and hand tool ensures that the operator does not have to first look for a control switch lying around or hanging around, but instead finds it in the grip area of the hand tool itself. In the subject matter of the invention, the hydraulic hand tool is therefore not only connected to the hydraulic pump and its control devices via a pressure hose, but also via a control line. As a result, the operator can not only carefully and precisely guide the tool with regard to the required work process and over the Also keep the duration of the work process, but continue to carry out further manipulations on the tool itself, should this be necessary for certain tool types. Handling is also largely fatigue-free, although most hydraulically driven tools have a considerable weight.

Es ist dabei besonders vorteilhaft, wenn das Handwerkzeug mindestens eine Grifffläche aufweist und wenn der Steuerschalter derart in der Nähe der Grifffläche in das Handwerkzeug integriert ist, daß er ohne Loslassen der Grifffläche betätigbar ist.It is particularly advantageous if the hand tool has at least one gripping surface and if the control switch is integrated into the hand tool in the vicinity of the gripping surface in such a way that it can be actuated without releasing the gripping surface.

Es ist dabei weiterhin von Vorteil, wenn die Hydraulikpumpe, ihr elektrischer Antriebsmotor und eine aufladbare Stromquelle in ein tragbares Gehäuse eingebaut sind, das mit Haltevorrichtungen zum Befestigen auf dem Rücken einer Bedienungsperson versehen ist.It is furthermore advantageous if the hydraulic pump, its electric drive motor and a rechargeable power source are installed in a portable housing which is provided with holding devices for fastening on the back of an operator.

Hierdurch entfällt das bei den bekannten Gehäusen, die mit einem einfachen Tragegurt nach Art von Umhängetaschen versehen sind, zu beobachtende Pendeln des sehr schweren Gehäuses mit Inhalt, wodurch die Bedienungsperson, die ihre Arbeit häufig in gebückter Haltung ausführen muß, erheblich behindert würde. Diese Behinderung tritt beim Tragen des Gehäuses mit der Hydraulikpumpe auf dem Rücken der Bedienungsperson nicht ein.This eliminates the need for the known housings, which are provided with a simple shoulder strap-type shoulder bag, to see the very heavy housing oscillating with content, which would considerably hinder the operator, who often has to carry out his work in a bent position. This hindrance does not occur when the housing is carried by the hydraulic pump on the operator's back.

Es ist dabei besonders vorteilhaft, wenn der Hydraulikantrieb in der Weise ausgelegt ist, daß nach Maßgabe von Druck und Liefergrad der tragbaren, über eine aufladbare Stromquelle antreibbaren Hydraulikpumpe und der Verformungseigenschaften der Leitungsverbindung der Preßvorgang in maximal 6 Sekunden, vorzugsweise in maximal 4 Sekunden, beendet ist.It is particularly advantageous if the hydraulic drive is designed in such a way that the pressing process ends in a maximum of 6 seconds, preferably in a maximum of 4 seconds, depending on the pressure and degree of delivery of the portable hydraulic pump which can be driven by a rechargeable power source and the deformation properties of the line connection is.

Eine solche Auslegung ist keineswegs selbstverständlich, denn Versuche mit einer tragbaren, batteriebetriebenen Hydraulikpumpe nach dem Stand der Technik in Verbindung mit einem gleichfalls handelsüblichen Handwerkzeug zum radialen Verpressen von Leitungsverbindungen haben gezeigt, daß der Preßvorgang wegen des großen Kolbendurchmessers des Hydraulikantriebes etwa 9 bis 10 Sekunden dauert. Da eine Bedienungsperson nacheinander eine Vielzahl von Leitungsverbindungen in gebeugter Haltung mit einem relativ sehr schweren Werkzeug verpressen muß, tritt hierbei rasch eine Ermüdung ein, so daß im Laufe der Zeit ein ungenaues Ansetzen des Handwerkzeugs zu beobachten ist. Die Dauer des Arbeitsvorganges ist bei dem gegebenen Betriebsparametern der bekannten tragbaren Hydraulikpumpe vorrangig durch den Durchmesser des Hydraulikkolbens im Handwerkzeug und durch den Hub des Kolbens bedingt. Nun hat sich überraschend gezeigt, daß eine entsprechende Verringerung des Kolbendurchmessers keineswegs zu fehlerhaften Leitungsverbindungen führt. Ganz offensichtlich werden die Preßkräfte durch die hohe Verformungsgeschwindigkeit begünstigt, und durch die kurzzeitige hohe Belastung des Elektroantriebs der Hydraulikpumpe wird auch eine Überlastung problemlos verkraftet. Umfangreiche Versuche haben jedenfalls gezeigt, daß bei einer Verringerung der Kolbenfläche auf etwa die Hälfte bei ansonsten unverändertem Übertragungssystem die gewünschten kurzen Verformungszeiten möglich sind, und daß dennoch in kurzer Taktfolge eine Vielzahl von Verbindungsvorgängen durchführbar ist.Such a design is by no means a matter of course, because tests with a portable, battery-operated hydraulic pump according to the state of the art Technology in conjunction with a commercially available hand tool for the radial pressing of line connections have shown that the pressing process takes about 9 to 10 seconds because of the large piston diameter of the hydraulic drive. Since an operator has to press a large number of line connections in a bent position with a relatively very heavy tool, fatigue occurs quickly, so that inaccurate application of the hand tool can be observed over time. For the given operating parameters of the known portable hydraulic pump, the duration of the working process is primarily due to the diameter of the hydraulic piston in the hand tool and the stroke of the piston. It has now surprisingly been found that a corresponding reduction in the piston diameter in no way leads to faulty line connections. The pressing forces are obviously favored by the high rate of deformation, and the short-term high load on the electric drive of the hydraulic pump means that an overload is also easily coped with. In any case, extensive tests have shown that the desired short deformation times are possible with a reduction in the piston area to about half with an otherwise unchanged transmission system, and that a large number of connection processes can nevertheless be carried out in a short cycle.

Weitere vorteilhafte Ausgestaltungen des Erfindungsgegenstandes ergeben sich aus den übrigen Unteransprüchen.Further advantageous embodiments of the subject matter of the invention emerge from the remaining subclaims.

Ein Ausführungsbeispiel des Erfindungsgegenstandes wird nachstehend anhand der einzigen Figur näher erläutert, die eine teilweise geschnittene Seitenansicht des Handwerkzeugs sowie eine Seitenansicht eines Gehäuses mit einer aufladbaren Stromquelle, einer Hydraulikpumpe und einem Elektroantrieb in Phantomdarstellung zeigt.An embodiment of the subject of the invention is explained in more detail below with reference to the single figure, which shows a partially sectioned side view of the hand tool and a side view of a housing with a rechargeable power source, a hydraulic pump and an electric drive in phantom.

Das Werkzeugaggregat besteht aus einem Handwerkzeug 1 und einem tragbaren Gehäuse 2, in dem eine aufladbare Stromquelle 3, ein Pumpensumpf 4, eine Hydraulikpumpe 5 und zu deren Antrieb ein Elektromotor 6 angeordnet sind. Der Elektromotor 6 wird bei entsprechender Ansteuerung von der Stromquelle 3 gespeist. Das Gehäuse 2 ist an seiner einen Stirnseite mit einem Anschlußstutzen 7 für eine Kupplung 8 eines Druckschlauches 9 sowie mit einer Steckverbindung 10 für den Anschluß einer Kupplung 11 einer Steuerleitung 12 versehen. Das Gehäuse 2 besitzt einen Tragegriff 13 sowie hier nicht näher gezeigte Haltevorrichtungen zum Befestigen auf dem Rücken einer Bedienungsperson.The tool assembly consists of a hand tool 1 and a portable housing 2, in which a rechargeable power source 3, a pump sump 4, a hydraulic pump 5 and an electric motor 6 for driving it are arranged. The electric motor 6 is fed by the current source 3 with appropriate control. The housing 2 is provided on its one end face with a connecting piece 7 for a coupling 8 of a pressure hose 9 and with a plug connection 10 for connecting a coupling 11 of a control line 12. The housing 2 has a handle 13 and holding devices, not shown here, for fastening on the back of an operator.

Das Handwerkzeug 1 besteht aus einem sogenannten Grundgerät 14 und einem auswechselbar daran befestigbaren Werkzeugkopf 15. Zum Grundgerät 14 gehört ein Gehäuse 16 mit einem Handgriff 17, der auf seinem Umfang eine Grifffläche 18 bildet. In unmittelbarer Nähe dieser Grifffläche 18 ist ein elektrischer Steuerschalter 19 im Gehäuse 16 angeordnet, der an die Steuerleitung 12 angeschlossen ist. Zur feuchtigkeitsdichten Durchführung der Steuerleitung 12 dient eine Stopfbuchsverschraubung 20.The hand tool 1 consists of a so-called basic device 14 and a tool head 15 which can be exchangeably fastened to it. The basic device 14 includes a housing 16 with a handle 17, which forms a gripping surface 18 on its circumference. In the immediate vicinity of this gripping surface 18, an electrical control switch 19 is arranged in the housing 16, which is connected to the control line 12. A gland screw connection 20 is used for the moisture-tight passage of the control line 12.

Im Innern des Gehäuses 16 befindet sich ein Hydraulikantrieb 21, der aus einem Hydraulikzylinder 22 mit einem Kolben 23, Kolbenringen 24 und einer Kolbenstange 25 besteht. Der Hydraulikzylinder 22 ist in das Gehäuse 16 eingeschraubt und durch eine Kontermutter 26 festgelegt. Im Hydraulikzylinder 22 befindet sich eine Druckfeder 27, die teilweise von der Kolbenstange 25, teilweise von einer Führungshülse 28 geführt ist. Auf das Ende des Hydraulikzylinders 22 ist weiterhin ein Zwischenstück 29 mit einem Flanschteil 30 aufgeschraubt, das in einer koaxialen Bohrung einen Lagerring 31 für die Kolbenstange 25 trägt.In the interior of the housing 16 there is a hydraulic drive 21 which consists of a hydraulic cylinder 22 with a piston 23, piston rings 24 and a piston rod 25. The hydraulic cylinder 22 is screwed into the housing 16 and fixed by a lock nut 26. In the hydraulic cylinder 22 there is a compression spring 27 which is guided partly by the piston rod 25 and partly by a guide sleeve 28. At the end of the hydraulic cylinder 22, an intermediate piece 29 with a flange part 30 is further screwed, which carries a bearing ring 31 for the piston rod 25 in a coaxial bore.

Mit dem besagten Flanschteil 30 ist über mehrere Schrauben 32, von denen nur eine sichtbar ist, der bereits erwähnte Werkzeugkopf 15 verbunden, zu dem ein Preßbackengehäuse 33 gehört, das mit einem weiteren Flanschteil 34 versehen ist. Im Innern des Preßbackengehäuses 33 befindet sich ein Kreuzkopf 35 mit zwei Steuerrollen 36, von denen wegen des gewählten Schnittes nur die obere sichtbar ist. Die beiden Steuerrollen sind auf zueinander parallelen Zapfen 37 gelagert, deren Enden wiederum im Kreuzkopf 35 festgelegt sind. Der Kreuzkopf 35 steht mit der Kolbenstange 25 auf die gezeigte Weise in Verbindung und wird von dieser angetrieben. Das Preßbackengehäuse 33 besteht aus zwei schalenförmigen Hälften, die über eine Schraube 38 zusammengehalten werden. Jenseits der Zapfen 37 ist das Preßbackengehäuse 33 gabelförmig ausgebildet und mit einer diametral durchgehenden Ausnehmung 39 versehen, in die zwei doppelarmige Preßbacken 40 und 41 teilweise hineinragen. Die Preßbacken 40 und 41 sind auf zwei parallel zueinander verlaufenden Gelenkzapfen 42 und 43 gelagert und werden durch eine Druckfeder 44 in der gezeigten stabilen Lage gehalten. Die Gelenkzapfen 42 und 43 sind am Ende des Preßbackengehäuses 33 gelagert. Jenseits der Gelenkzapfen 42 und 43 wird zwischen den Preßbacken 40 und 41 ein Zangenmaul 45 gebildet, das zum radialen Verpressen sogenannter Leitungsverbinder dient. Um das Zangenmaul 45 öffnen zu können, besitzen die diesseitigen Schenke der Preßbacken 40 und 41 auf ihren Außenseiten weitere Griffflächen 46 und 47, mittels welcher die Preßbacken 40 und 41 von Hand weiter in die Ausnehmung 39 hineingedrückt werden können. Sobald das Zangenmaul 45 den Leitungsverbinder übergreift, werden die Griffflächen 46 und 47 entlastet, so daß die zuvor komprimierte Druckfeder 44 das Zangenmaul 45 soweit schließt, wie dies der darin befindliche Leitungsverbinder mit den Leitungsenden zuläßt.The aforementioned tool head 15 is connected to said flange part 30 via a plurality of screws 32, only one of which is visible which includes a press jaw housing 33 which is provided with a further flange part 34. Inside the press jaw housing 33 there is a cross head 35 with two control rollers 36, of which only the upper one is visible due to the selected cut. The two control rollers are mounted on parallel pins 37, the ends of which are in turn fixed in the crosshead 35. The crosshead 35 is connected to the piston rod 25 in the manner shown and is driven by it. The press jaw housing 33 consists of two shell-shaped halves which are held together by a screw 38. Beyond the pins 37, the press jaw housing 33 is fork-shaped and provided with a diametrically continuous recess 39 into which two double-armed press jaws 40 and 41 partially protrude. The press jaws 40 and 41 are mounted on two parallel pivot pins 42 and 43 and are held in the stable position shown by a compression spring 44. The pivot pins 42 and 43 are mounted at the end of the press jaw housing 33. Beyond the pivot pins 42 and 43, a jaw 45 is formed between the press jaws 40 and 41, which is used for the radial pressing of so-called line connectors. In order to be able to open the jaws 45, the legs of the pressing jaws 40 and 41 on this side have further gripping surfaces 46 and 47 by means of which the pressing jaws 40 and 41 can be pressed further into the recess 39 by hand. As soon as the pliers mouth 45 overlaps the line connector, the gripping surfaces 46 and 47 are relieved, so that the previously compressed compression spring 44 closes the pliers mouth 45 as far as the line connector therein with the line ends permits.

Nach genauer Ausrichtung des Handwerkzeugs 1 wird nunmehr der Steuerschalter 19 betätigt, der über die Steuerleitung 12 die Hydraulikpumpe 5 in Betrieb setzt, so daß der Kolben 23 über den Druckschlauch 9 unter Druck gesetzt und nach rechts verschoben wird. Dieser Kolbenbewegung folgen die Steuerrollen 36, die hierbei auf zwei Steuerflächen 48 auflaufen, von denen gleichfalls nur die obere sichtbar ist. Die Steuerflächen 48 haben in bezug auf die Werkzeugachse A-A die Wirkung schiefer Ebenen, d.h. unter der Wirkung der Steuerrollen 36 und der Steuerflächen 48 wird das Zangenmaul 45 mit großer Kraft geschlossen und der Preßvorgang durchgeführt. Hierbei dient - nach dem Loslassen der Griffflächen 46 und 47 - die Außenfläche des Preßbackengehäuses 33 als weitere Grifffläche, um das Werkzeug zuverlässig in der gewählten Position halten zu können. Mit anderen Worten: Die Bedienungsperson hat beide Hände am Handwerkzeug 1.After precise alignment of the hand tool 1, the control switch 19 is now actuated, which sets the hydraulic pump 5 into operation via the control line 12, so that the piston 23 is pressurized via the pressure hose 9 and displaced to the right. This piston movement is followed by the control rollers 36, which in this case run onto two control surfaces 48, only the upper one is visible. The control surfaces 48 have the effect of inclined planes with respect to the tool axis AA, ie under the action of the control rollers 36 and the control surfaces 48 the forceps jaw 45 is closed with great force and the pressing process is carried out. Here, after the release of the gripping surfaces 46 and 47, the outer surface of the press jaw housing 33 serves as a further gripping surface in order to be able to hold the tool reliably in the selected position. In other words: the operator has both hands on the hand tool 1.

Die Preßbacken 40 und 41 sind zusammen mit den Gelenkzapfen 42 und 43 als Baueinheit auswechselbar und zu diesem Zweck mittels einer Lasche 49 und eines Zylinderstiftes 50 im Preßbackengehäuse 33 gehalten. Nach dem Lösen des Zylinderstiftes 50 ist es auf einfache Weise möglich, den äußeren Teil des Werkzeugkopfes 15 auszuwechseln und durch einen Satz von Preßbacken mit einem Zangenmaul 45 unterschiedlichen Durchmessers bzw. unterschiedlich geformter Preßflächen zu ersetzen.The pressing jaws 40 and 41 can be exchanged together with the pivot pins 42 and 43 as a structural unit and are held in the pressing jaw housing 33 by means of a tab 49 and a cylindrical pin 50 for this purpose. After loosening the cylindrical pin 50, it is possible in a simple manner to replace the outer part of the tool head 15 and to replace it by a set of press jaws with a jaw 45 with different diameters or differently shaped press surfaces.

Es ist der Figur zu entnehmen, daß das erfindungsgemäße Werkzeugaggregat ein leicht transportables Arbeitsgerät darstellt, mit dem Leitungsverbindungen zuverlässig, schnell und kraftsparend hergestellt werden können.It can be seen from the figure that the tool assembly according to the invention is an easily transportable implement with which line connections can be made reliably, quickly and in a manner which saves energy.

Claims (7)

Werkzeugaggregat, bestehend aus einem Handwerkzeug (1) mit einem eingebauten Hydraulikantrieb (21) sowie aus einer tragbaren, über einen Druckschlauch (9) mit dem Handwerkzeug (1) verbundenen, elektrisch angetriebenen Hydraulikpumpe (5) mit einem über eine Steuerleitung (12) angeschlossenen Steuerschalter (19), dadurch gekennzeichnet, daß der Steuerschalter (19) mit dem Handwerkzeug (1) baulich vereint ist.Tool unit, consisting of a hand tool (1) with a built-in hydraulic drive (21) and a portable, electrically driven hydraulic pump (5) connected to the hand tool (1) via a pressure hose (9) and connected to one via a control line (12) Control switch (19), characterized in that the control switch (19) is structurally combined with the hand tool (1). Werkzeugaggregat nach Anspruch 1, dadurch gekennzeichnet, daß das Handwerkzeug (1) mindestens eine Grifffläche (18) aufweist und daß der Steuerschalter (19) derart in der Nähe der Grifffläche (18) in das Handwerkzeug (1) integriert ist, daß er ohne Loslassen der Grifffläche (18) betätigbar ist.Tool assembly according to claim 1, characterized in that the hand tool (1) has at least one gripping surface (18) and in that the control switch (19) is integrated in the vicinity of the gripping surface (18) in the hand tool (1) in such a way that it can be released without being released the grip surface (18) can be actuated. Werkzeugaggregat nach Anspruch 1, dadurch gekennzeichnet, daß die Steuerleitung (12) eine elektrische Leitung und der Steuerschalter (19) ein elektrischer Schalter ist.Tool unit according to claim 1, characterized in that the control line (12) is an electrical line and the control switch (19) is an electrical switch. Werkzeugaggregat nach Anspruch 1, dadurch gekennzeichnet, daß die Hydraulikpumpe (5), ihr elektrischer Antriebsmotor (6) und eine aufladbare Stromquelle (3) in ein tragbares Gehäuse (2) eingebaut sind, das mit Haltevorrichtungen zum Befestigen auf dem Rücken einer Bedienungsperson versehen ist.Tool unit according to claim 1, characterized in that the hydraulic pump (5), its electric drive motor (6) and a rechargeable power source (3) are built into a portable housing (2) which is provided with holding devices for fastening on the back of an operator . Werkzeugaggregat nach Anspruch 4, dadurch gekennzeichnet, daß das Gehäuse (2) lösbar auf einem Traggestell befestigt ist, das mit den Haltevorrichtungen ausgestattet ist.Tool unit according to claim 4, characterized in that the housing (2) is releasably attached to a support frame which is equipped with the holding devices. Werkzeugaggregat nach Anspruch 1, dadurch gekennzeichnet, daß das Handwerkzeug (1) einen vom Hydraulikantrieb (21) lösbaren Werkzeugkopf (15) aufweist, der mit mindestens zwei Werkzeugbacken (40, 41) zum axialen oder radialen Verpressen von Leitungsverbindungen ausgestattet ist.Tool unit according to Claim 1, characterized in that the hand tool (1) has a tool head (15) which can be detached from the hydraulic drive (21) and which is equipped with at least two tool jaws (40, 41) for axially or radially pressing line connections. Werkzeugaggregat nach Anspruch 6, dadurch gekennzeichnet, daß der Hydraulikantrieb (21) in der Weise ausgelegt ist, daß nach Maßgabe von Druck und Liefergrad der tragbaren, über eine aufladbare Stromquelle (3) antreibbaren Hydraulikpumpe (5) und der Verformungseigenschaften der Leitungsverbindung der Preßvorgang in maximal 6 Sekunden, vorzugsweise in maximal 4 Sekunden, beendet ist.Tool assembly according to claim 6, characterized in that the hydraulic drive (21) is designed in such a way that the pressing process in accordance with the pressure and the degree of delivery of the portable hydraulic pump (5) which can be driven by a rechargeable power source (3) and the deformation properties of the line connection a maximum of 6 seconds, preferably in a maximum of 4 seconds.
EP95108149A 1994-06-03 1995-05-29 Tool aggregate with handtool and portable hydraulic pump Expired - Lifetime EP0685302B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE9409051U 1994-06-03
DE9409051 1994-06-03
DE4446502 1994-12-25
DE4446502A DE4446502A1 (en) 1994-06-03 1994-12-25 Tool unit with hand tools and portable hydraulic pump

Publications (2)

Publication Number Publication Date
EP0685302A1 true EP0685302A1 (en) 1995-12-06
EP0685302B1 EP0685302B1 (en) 1998-08-12

Family

ID=25943312

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95108149A Expired - Lifetime EP0685302B1 (en) 1994-06-03 1995-05-29 Tool aggregate with handtool and portable hydraulic pump

Country Status (2)

Country Link
EP (1) EP0685302B1 (en)
AT (1) ATE169546T1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2186606A2 (en) * 2008-11-12 2010-05-19 Interprecise Donath Gmbh Attachment device for a tube press machine
US11925253B2 (en) 2018-07-31 2024-03-12 Wacker Neuson Produktion Gmbh & Co Kg Wearable drive system for a work apparatus

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1075857A (en) * 1963-12-13 1967-07-12 Burndept Ltd Battery operated mechanical power unit
DE2136742A1 (en) 1971-07-15 1973-02-08 Mo Stankostroitelnyj Sawod Kra VERTICAL MULTI-SPINDLE MACHINE TOOL
US5022587A (en) * 1989-06-07 1991-06-11 Hochstein Peter A Battery powered nebulizer
US5125324A (en) * 1988-02-10 1992-06-30 Daia Industry Co. Ltd. Portable hydraulically operated device incorporating automatic drain valve
DE4207764A1 (en) * 1992-03-11 1993-09-16 Hugo Junkers Werke Gmbh Hydraulic machine with interchangeable tools - comprises high pressure hydraulic pump driven by electric motor and coaxial working cylinder to drive tool and all contained in portable unit
DE4423049A1 (en) * 1994-07-03 1995-01-19 Lai Xiao Wei Variable-power, multi-purpose hydraulic device, as a hand tool, capable of both drawing and pressing, of the central-pin type (and concentric double-piston type)

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1075857A (en) * 1963-12-13 1967-07-12 Burndept Ltd Battery operated mechanical power unit
DE2136742A1 (en) 1971-07-15 1973-02-08 Mo Stankostroitelnyj Sawod Kra VERTICAL MULTI-SPINDLE MACHINE TOOL
US5125324A (en) * 1988-02-10 1992-06-30 Daia Industry Co. Ltd. Portable hydraulically operated device incorporating automatic drain valve
US5022587A (en) * 1989-06-07 1991-06-11 Hochstein Peter A Battery powered nebulizer
DE4207764A1 (en) * 1992-03-11 1993-09-16 Hugo Junkers Werke Gmbh Hydraulic machine with interchangeable tools - comprises high pressure hydraulic pump driven by electric motor and coaxial working cylinder to drive tool and all contained in portable unit
DE4423049A1 (en) * 1994-07-03 1995-01-19 Lai Xiao Wei Variable-power, multi-purpose hydraulic device, as a hand tool, capable of both drawing and pressing, of the central-pin type (and concentric double-piston type)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2186606A2 (en) * 2008-11-12 2010-05-19 Interprecise Donath Gmbh Attachment device for a tube press machine
DE102008057424A1 (en) 2008-11-12 2010-05-27 Interprecise Donath Gmbh Attachment device for a pipe pressing machine
DE102008057424B4 (en) * 2008-11-12 2010-09-02 Interprecise Donath Gmbh Attachment device for a pipe pressing machine
EP2186606A3 (en) * 2008-11-12 2012-04-25 INTERPRECISE Donath GmbH Attachment device for a tube press machine
US11925253B2 (en) 2018-07-31 2024-03-12 Wacker Neuson Produktion Gmbh & Co Kg Wearable drive system for a work apparatus

Also Published As

Publication number Publication date
ATE169546T1 (en) 1998-08-15
EP0685302B1 (en) 1998-08-12

Similar Documents

Publication Publication Date Title
DE2118782C2 (en) Pressure fluid operated clamping tool
EP2069113B1 (en) Device for guiding a hose comprising at least one supply line
EP1972394B1 (en) Pressing device for tubular workpieces
DE112015001669T5 (en) jig
DE202016007588U1 (en) Screw-in aid for holding and aligning a screw
EP2708327A2 (en) Tensioning device for extending a threaded bolt, and tool suitable for this purpose, preferably drive adapter
DE2913311A1 (en) SAFETY COUPLING FOR MOTOR-DRIVEN FLEXIBLE SHAFTS
DE102009030285A1 (en) Tool for screwing a piston on the piston rod of a hydraulic cylinder and hydraulic cylinder
DE102016014860B3 (en) Screw-in aid for holding and aligning a screw
WO2017125272A1 (en) Motor-operated shears
EP3025824B1 (en) Mobile hydraulic tool
EP0685302A1 (en) Tool aggregate with handtool and portable hydraulic pump
DE4446502A1 (en) Tool unit with hand tools and portable hydraulic pump
EP3939746B1 (en) Press apparatus with fuse
DE2644865A1 (en) Tool for adjusting vehicle track rods - has gripping rollers actuated by gear drive and pneumatic motor
EP1169152B1 (en) Device for handling retaining ring bolts
DE10019132B4 (en) Ratchet ring spanner for union nuts on cables
DE2524017A1 (en) Hand drill driven hydraulic pressure generator - consists of pressure cylinder with pump and elastic coupling for drill (NL021176)
DE4241971C1 (en) Contact carrier sleeve compression procedure using hydraulic press - requires independent sensors for limiting force exerted on contact carrier sleeve and displacement of hydraulic press tool
DE10156538A1 (en) Machine tool has cable eyelet provided on rotary bearing mounted with handle, which is rotated along center of gravity line
EP1327814A2 (en) Articulated stand
EP4321301A1 (en) Torque tool operated with battery-powered hydraulics
DE202007003514U1 (en) Hand-operated electric cutting tool
DE9210742U1 (en) Dental handpiece
DE202014100707U1 (en) Hand tool drive

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): AT BE CH DE DK FR GB LI NL SE

17P Request for examination filed

Effective date: 19960517

17Q First examination report despatched

Effective date: 19970411

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ROTHENBERGER WERKZEUGE AKTIENGESELLSCHAFT

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK FR GB LI NL SE

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19980812

Ref country code: FR

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

Effective date: 19980812

REF Corresponds to:

Ref document number: 169546

Country of ref document: AT

Date of ref document: 19980815

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: KEMENY AG PATENTANWALTBUERO

Ref country code: CH

Ref legal event code: EP

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

Effective date: 19980814

REF Corresponds to:

Ref document number: 59503124

Country of ref document: DE

Date of ref document: 19980917

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

Ref country code: SE

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

Effective date: 19981112

Ref country code: DK

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

Effective date: 19981112

EN Fr: translation not filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
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: 19990529

Ref country code: AT

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

Effective date: 19990529

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

Ref country code: LI

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

Effective date: 19990531

Ref country code: CH

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

Effective date: 19990531

Ref country code: BE

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

Effective date: 19990531

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
BERE Be: lapsed

Owner name: ROTHENBERGER WERKZEUGE A.G.

Effective date: 19990531

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Effective date: 19990529

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

Ref country code: DE

Payment date: 20000926

Year of fee payment: 6

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

Ref country code: DE

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

Effective date: 20020301