EP1920888B1 - Outil rotatif à chocs et plaque antérieure pour celui ci - Google Patents

Outil rotatif à chocs et plaque antérieure pour celui ci Download PDF

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Publication number
EP1920888B1
EP1920888B1 EP06023567A EP06023567A EP1920888B1 EP 1920888 B1 EP1920888 B1 EP 1920888B1 EP 06023567 A EP06023567 A EP 06023567A EP 06023567 A EP06023567 A EP 06023567A EP 1920888 B1 EP1920888 B1 EP 1920888B1
Authority
EP
European Patent Office
Prior art keywords
pulse
opening
bypass
tool according
pulse tool
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.)
Not-in-force
Application number
EP06023567A
Other languages
German (de)
English (en)
Other versions
EP1920888A1 (fr
Inventor
Konrad Karl Kettner
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.)
Apex Tool Group GmbH and Co OHG
Original Assignee
Cooper Power Tools GmbH and Co OHG
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 Cooper Power Tools GmbH and Co OHG filed Critical Cooper Power Tools GmbH and Co OHG
Priority to EP06023567A priority Critical patent/EP1920888B1/fr
Priority to AT06023567T priority patent/ATE506143T1/de
Priority to ES06023567T priority patent/ES2365404T3/es
Priority to DE502006009359T priority patent/DE502006009359D1/de
Priority to US11/939,274 priority patent/US7703546B2/en
Publication of EP1920888A1 publication Critical patent/EP1920888A1/fr
Application granted granted Critical
Publication of EP1920888B1 publication Critical patent/EP1920888B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/02—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket
    • 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
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/145—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for fluid operated wrenches or screwdrivers
    • B25B23/1453—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for fluid operated wrenches or screwdrivers for impact wrenches or screwdrivers

Definitions

  • the invention relates to a pulse tool, in particular impulse wrench, with a drive unit and a pulse unit driven by this pulse unit having at least one rotor with at least two fins, a hydraulic cylinder surrounded this and a drive spindle projecting from the hydraulic cylinder on one side by a front plate.
  • the front plate is disposed between the rotor and a front cover of the pulse unit formed with a hydraulic fluid filling means.
  • Such a pulse tool is from practice, for example from the DE 20 210 453 U is known and used, for example, to perform by means of the drive spindle and a corresponding tool on the drive spindle a screw.
  • the speed of such a screw essentially determines the economy of the pulse tool. The faster the screw connection, the higher the efficiency. This is hard. Screw connections with a small tightening angle usually unproblematic. However, if the screw connection is softer, the pulse tool may take a few seconds to produce the screw connection in the desired manner. Such a long period of time is usually unacceptable. In order to ensure economic screwing in any case, pulse frequencies between 20 Hz and 30 Hz are preferred.
  • the pulse frequency vary within certain limits and in comparison to the above-mentioned pulse frequencies quite a few Hz may be too large or too small.
  • US 5,611,404 shows a pulse tool with a drive unit and a pulse unit.
  • a pressure plate is disposed between fins and an end cover.
  • the pressure plate has a primary passage and a secondary passage.
  • the primary passage serves to compensate for an expansion of the fluid due to an increase in temperature due to the actuation of the pulse tool.
  • the secondary passage connects the primary passage to a slot.
  • the secondary passage is intended to relieve pressure spikes during reverse actuation of the pulse tool, the slot forming an area with lower pressure.
  • the secondary passage is used to assist in the escape of air during filling of the tool with fluid.
  • DE 2 02 10 453 US discloses a pulse unit for a screwdriver having a rotor and a number of blades. These are adjustable in radial Richter and stored in guide grooves of the rotor. Chambers formed between the rotor and the rotor cylinder are separated by the lamellae. A bypass connects two chambers with each other and the bypass is associated with an adjustable locking device.
  • Object of the present invention is to compensate for corresponding deviations in the desired pulse frequencies in a simple manner and in particular already during assembly of the pulse tool.
  • the front plate of the pulse tool through the slats on separate high-pressure and low-pressure chambers connecting bypass openings.
  • the pulse frequency By opening or closing at least one bypass opening, the pulse frequency can be increased or decreased accordingly, with hydraulic fluid can flow from the high-pressure to the low-pressure chamber when the bypass opening is open, whereby the pulse frequency is increased.
  • the corresponding increase in the pulse frequency depends in particular on the opening diameter of the corresponding bypass opening, wherein at a larger opening diameter a faster hydraulic fluid exchange between the above chambers and thus a faster driving over the corresponding sealing webs of the hydraulic cylinder can be carried out by the corresponding slats.
  • the pulse frequency can be lowered.
  • bypass opening By only one bypass opening, however, only relatively few variations of the pulse frequency are possible. For example, by opening or closing a bypass opening, the pulse frequency can be increased or decreased by a few Hz.
  • two or more bypass openings form a bypass opening group. These bypass ports of the bypass port group may then be used by opening one or more bypass ports to a corresponding change in pulse frequency.
  • a bypass opening group connects according to high-pressure and low-pressure chamber of the pulse unit. That is, all the bypass openings of the bypass opening group can be used for the corresponding hydraulic fluid exchange between the chambers in any combination. If such a bypass opening group, for example, consists of three bypass openings, then it goes without saying that one, two or all three bypass openings can be opened or correspondingly closed by associated closing bodies.
  • each bypass opening of each bypass opening group is different. This means that, for example, the bypass opening with the largest opening diameter alone is closed in order to allow a certain pulse frequency increase, while opening the bypass opening with the smallest opening diameter, a lower pulse frequency increase is realized. Again, corresponding combinations of opening or closing of all bypass openings of a bypass opening group are possible.
  • a corresponding bypass opening is formed only after a first test of the pulse tool with respect to the corresponding pulse frequency in the front plate.
  • the bypass opening is equipped with a corresponding opening diameter. It is also possible to at least partially close an already existing bypass opening, in order to change the pulse frequency accordingly, or to vary the opening diameter of the bypass opening. For example, the aperture diameter could be increased if a corresponding increase in pulse frequency is desired.
  • each of the bypass openings A simple way to close and corresponding opening of each of the bypass openings can be seen in that it is closed by means of a arranged between the front plate and front cover, in particular spherical closing body. Depending on the desired change in the pulse frequency, the corresponding closing body is removed or used to close a bypass opening.
  • bypass opening groups are arranged in pairs diametrically opposite each other. An arrangement is made such that in each case a bypass opening group is associated with a high pressure chamber, each high pressure chamber can be assigned its own bypass opening group.
  • a pulse tool described above is designed not only for one direction of rotation, but for clockwise and counterclockwise rotation.
  • bypass opening groups for right and left rotation of the drive spindle can be arranged. Arrangement of the bypass opening groups, number of the bypass openings of each bypass opening group, and diameter of each bypass opening may be varied according to the foregoing.
  • each high-pressure chamber is associated with a corresponding bypass opening group, and it may also be sufficient if only one or two of the high-pressure chambers zugerordnet a corresponding bypass opening group.
  • each bypass opening in the direction of the front cover has a correspondingly formed sealing seat for the closing body, wherein the sealing seat can be formed by a substantially conical widening of the bypass opening.
  • This conical extension can be identical for all bypass openings, so that accordingly closing bodies with the same diameter or the same dimensions can be used.
  • the pulse tool is filled prior to delivery to the user with hydraulic fluid, the filling usually takes place directly at the pulse unit.
  • a corresponding Hydraulikfluidbehell Huawei is used.
  • the hydraulic fluid filling device of the cover has at least one in particular closable filling opening. Through this, the pulse unit is filled with hydraulic fluid under a vacuum and, in particular, care is taken in such a filling that no bubbles remain within the pulse unit.
  • the pulse unit After filling the pulse unit this can then be arranged in the pulse tool and connected to the corresponding drive unit. Before, the filling opening is correspondingly closed, for example by a screw-in sealing pin or piston and optionally a closing body.
  • the filling opening can be aligned relative to each bypass opening, so that the corresponding closing body for the bypass openings can be inserted and removed through the filling opening.
  • the pulse frequency can be varied by the bypass openings and the pulse tool can be delivered with a specific basic pulse frequency.
  • this pulse fundamental frequency changes, for example, due to leakage of hydraulic fluid, temperature changes of the hydraulic fluid and thus caused pressure changes, etc.
  • the pulse unit their end facing the drive spindles having a fluid chamber connected to a compensation chamber.
  • This compensation chamber may be in volume, i. Compensation volume, to compensate for the previous influences are varied.
  • Such a variation can be done for example by an elastic membrane as a boundary of the compensation chamber.
  • the elastic membrane is deflected when the hydraulic fluid occupies a higher volume at higher temperatures, so that the corresponding additional volume is absorbed by the compensation chamber by deflecting the membrane and thereby the basic pulse frequency is maintained unchanged.
  • hydraulic fluid from the balance chamber is returned to the pulse unit through the corresponding fluid port.
  • the corresponding compensation chamber can not only be varied in its compensating volume as a function of the pressure, but instead can be varied independently of the pressure.
  • the corresponding compensation chamber can not only be varied in its compensating volume as a function of the pressure, but instead can be varied independently of the pressure.
  • a simple possibility for such a pressure-independent variable compensation volume can be seen therein when the compensation chamber is bounded by the hydraulic cylinder and in particular by rotation in the longitudinal direction adjustable compensating piston.
  • the balance piston can be rotated by the worker from the outside, so that the corresponding Adjustment of the compensation volume by the operator before, during or even after use of the pulse tool can be done.
  • the balance piston can be fixed in at least one rotational position by means of a fixing device relative to the hydraulic cylinder.
  • a front plate of the type described above which can be used with a corresponding pulse tool between pulse unit and front cover, can optionally be used as a retrofit component in already used pulse tools.
  • Fig. 1 shows a side view of a pulse tool 1 with at least one drive unit 2 and a pulse unit 3. From the pulse unit 3 is a drive spindle 11 before, on a corresponding tool, for example, for a screw connection can be attached, such as a socket or the like.
  • such a pulse tool is equipped with a pneumatic motor as a drive unit and can usually be operated both for tightening as well as for loosening a screw with clockwise and counterclockwise rotation.
  • the pulse unit 3 is after Fig. 1 shown in a longitudinal section.
  • the pulse unit 3 is arranged in a possibly multi-part housing 35.
  • the pulse unit 3 has a rotor 4 which is drive-connected to the drive unit 2.
  • radially adjustable slats 5, 6, 7 and 8 are mounted, see also Fig. 3 , In each case two diametrically opposite slats 5, 6 and 7, 8 are acted upon radially outward by corresponding compression springs 36.
  • the free ends of the slats 5, 6, 7, 8 are in the range of sealing webs 37, see also Fig. 3 , on an inner contour of a hydraulic cylinder 9, separating high and low pressure chambers 14, 15 from each other.
  • Rotor, vanes, seal lands, and hydraulic rams cooperate in a conventional manner to produce pulse bursts at a particular pulse frequency.
  • a pulse frequency is 20 to 30 Hz, as at such a pulse frequency economic screwing is guaranteed.
  • the pulse unit 3 has at its in Fig. 2 left end on a front plate 10 and a front cover 12.
  • the front plate 10 is disposed between substantially rotor 4 and fins 5, 6, 7, 8 and the front cover 12.
  • a Hydraulikfluidbehell sensible 13 is arranged in the front cover 12. This comprises at least one filling opening 24, which can be closed by a closing ball and a screw-in sealing pin or piston 38 and 39 after filling the pulse unit 3 with hydraulic fluid.
  • the pulse unit is sealed on the side of the drive spindle 11, so that hydraulic fluid via sealing gaps between the front plate 10, front cover 12 and rotor 4 or lamellae 5, 6, 7, 8 between the high pressure and low pressure chamber is interchangeable.
  • the drive spindle 11 passes through both the front plate 10 and the front cover 12 and is for the arrangement of a corresponding tool from the pulse tool 1 before.
  • the pulse unit 3 At its end facing the drive spindle 11 end 25, the pulse unit 3 has a fluid opening 27 in the hydraulic cylinder. Through these are the chambers 14, 15, see also Fig. 3 , in the interior of the pulse unit 3 with a compensation chamber 26 with a corresponding compensation volume 28 in connection.
  • This compensation chamber 26 is delimited by the hydraulic cylinder 9 and a compensating piston 29 which can be adjusted in the longitudinal direction 30 by turning.
  • the balance piston 29 can be relative to the hydraulic cylinder 9 in Fig. 2 Adjust to the right, whereby the compensation chamber 26 receives a larger compensation volume 28.
  • Certain rotational positions of the balance piston 29 can be fixed by a pin as a fixing device 31, wherein, for example, four, six or more rotational positions in a revolution of the balance piston 29 are fixed accordingly.
  • Fig. 3 is a section taken along the line III-III Fig. 2 shown.
  • the arrangement of the high-pressure chambers 14 and low-pressure chambers 15 between two slats 5, 6, 7 and 8 can be seen here. These are mounted radially adjustable in the rotor 4 to the outside and pressurized spring.
  • Fig. 3 In the position shown Fig. 3 are two high-pressure chambers 14 and two low-pressure chambers 15 each diametrically opposite one another, wherein the corresponding blades 5, 6, 7, 8 are just in sealing contact with corresponding sealing ridges 37.
  • the direction of rotation after Fig. 3 is denoted by the reference numeral 34, in this context, a clockwise rotation of the rotor or according to the drive spindle 11, see also Fig. 2 , he follows.
  • Fig. 4 is a detailed representation of the pulse unit 3 in particular for front plate 10 and front cover 12 is shown. Visible are in the front plate bypass openings 16 and closing body 19 in the form of closing balls that close these bypass openings. The closing balls 19 are held between the front plate 10 and the front cover 12. The bypass openings are in communication with the corresponding chambers in the interior of the pulse unit 3.
  • Each bypass opening 16, 17, 18, see also Fig. 5 Towards the front cover 12 has a receiving seat 33 for the arrangement of the corresponding closing ball 19.
  • the receiving seats 33 have the same cross-section for all bypass openings, so that each of the bypass openings 16, 17, 18 can be closed by a closing ball 19 with the same diameter.
  • Each receiving seat 33 has, as a cross-section, substantially a conical part extending from a corresponding opening diameter 23 of the bypass openings and an adjoining substantially cylindrical part. With the conical part, the closing ball 19 is in sealing contact.
  • the opening diameters 23 of the various bypass openings 16, 17, 18 are different, see in particular Fig. 5 ,
  • bypass openings 16, 17, 18, are after Fig. 5 to bypass opening groups 20, 32, 22 and 32 are summarized.
  • the bypass opening groups 20 and 21 are with the corresponding high-pressure chambers 14 after Fig. 3 in conjunction, wherein an analogous connection through the bypass opening groups 22 and 32 with high-pressure chambers in a reverse run, ie, counterclockwise Fig. 3 he follows.
  • Each bypass opening group has three bypass openings 16, 17, 18.
  • the arrangement of the bypass openings 16, 17, 18 takes place for the bypass opening groups 20 and 21 in the same and for the bypass opening groups 22 and 32 in the reverse direction.
  • the various bypass openings 16, 17, 18 have decreasing opening diameters 23 in this order. That is, the two bypass opening 16 has the largest and the bypass opening 18 to the smallest opening diameter.
  • bypass opening groups 20, 21 and 22, 32 are arranged diametrically opposite one another and assigned to the respective high-pressure chambers.
  • By closing balls 19 unlocked bypass openings 16, 17, 18 penetrates hydraulic fluid into the low-pressure chambers and flows primarily through center 40 of the front plate to the left side accordingly Fig. 4 from the direction of the high-pressure chambers, allowing a hydraulic fluid exchange in this way takes place between the chambers and thus a faster driving over the sealing webs of the hydraulic cylinder is connected by the fins and thus a pulse frequency increase.
  • a larger or smaller hydraulic fluid exchange takes place.
  • a pulse frequency for setting a corresponding basic pulse frequency eight times by certain amounts can be varied.
  • the corresponding basic pulse frequency is set before delivery of the pulse tool, in particular in the range of 20 Hz to 30 Hz.
  • the corresponding opening diameters of the bypass openings 16, 17, 18 may be in the range of a few tenths of a millimeter. It is also possible to arrange fewer or more bypass openings for each bypass opening group, thereby resulting in correspondingly fewer or more adjustment possibilities for the basic pulse frequency.
  • bypass openings and / or bypass opening groups for clockwise and counterclockwise rotation in order, for example, to design one impact direction more strongly than the other with other frequency capabilities.
  • the arrangement of the closing body 19 in the corresponding receiving seats 33 takes place through the filling opening 24, wherein the front cover 12 according to the assignment of the filling opening 24 to each of the bypass openings 16, 17, 18 is rotatable.
  • a corresponding front plate 10 can also be retrofitted for impulse tools already in use as a rule, see in particular Fig. 2 and 4 , wherein only an exchange of a corresponding previously used front plate with the front plate must be made according to the invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Massaging Devices (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Shearing Machines (AREA)
  • Valve Device For Special Equipments (AREA)

Claims (14)

  1. Outil à impulsions (1), en particulier visseuse à impulsions, comprenant une unité d'entraînement (2) et une unité d'impulsions (3) entraînée par la première (2), laquelle unité d'impulsions présente au moins un rotor (4) avec au moins deux lamelles (5, 6, 7, 8), un cylindre hydraulique (9) entourant ces dernières et un arbre d'entraînement (11), qui au moyen d'une plaque frontale (10), dépasse d'un côté le cylindre hydraulique, la plaque frontale (10) étant positionnée entre le rotor (4) et un élément de couverture frontal (12) et équipé d'un dispositif de remplissage de fluide hydraulique (13),
    caractérisé en ce que la plaque frontale(10) présente des passages de dérivation (16, 17, 18) reliant des chambres à haute pression et à basse pression (14, 15), qui sont séparées par les lamelles (5, 6, 7, 8), deux passages de dérivation (16, 17, 18) ou plus formant un groupe de passages de dérivation (20, 21, 22, 32) et les diamètres (23) des passages de dérivation (16, 17, 18) de chaque groupe de passages de dérivation (20, 21, 22, 32) étant différents.
  2. Outil à impulsions selon la revendication 1,
    caractérisé en ce que le passage de dérivation (16, 17, 18) peut être fermé et/ou en ce que son diamètre de passage (23) peut être modifié.
  3. Outil à impulsions selon la revendication 1 ou 2,
    caractérisé en ce que le passage de dérivation (16, 17, 18) peut être fermé au moyen d'un corps de fermeture (19) en particulier de forme sphérique, qui est positionné entre la plaque frontale (10) et l'élément de couverture frontal (12).
  4. Outil à impulsions selon l'une quelconque des revendications précédentes,
    caractérisé en ce que les groupes de passages de dérivation (20, 21, 22, 32) sont positionnés par deux de part et d'autre, dans la plaque frontale(10), et situés diamétralement opposés l'un à l'autre.
  5. Outil à impulsions selon l'une quelconque des revendications précédentes,
    caractérisé en ce que les groupes de passages de dérivation (20, 21, 22, 32) sont positionnés pour un mouvement dans le sens horaire ou dans le sens inverse de l'arbre d'entraînement (11).
  6. Outil à impulsions selon l'une quelconque des revendications précédentes,
    caractérisé en ce qu'un groupe des passages de dérivation (20, 21, 22, 32) est affecté à chaque chambre à haute pression (14).
  7. Outil à impulsions selon l'une quelconque des revendications précédentes,
    caractérisé en ce que les corps de fermeture (19) présentent le même diamètre pour chaque passage de dérivation.
  8. Outil à impulsions selon l'une quelconque des revendications précédentes,
    caractérisé en ce que le dispositif de remplissage de fluide hydraulique (13) présente, dans l'élément de couverture frontal (12), au moins un orifice de remplissage (24) qui, de préférence, peut se fermer.
  9. Outil à impulsions selon la revendication 8,
    caractérisé en ce que l'orifice de remplissage (24) peut être orienté en fonction de chaque passage de dérivation (16,17, 18).
  10. Outil à impulsions selon l'une quelconque des revendications précédentes,
    caractérisé en ce que les diamètres de passage (23) des différents groupes de passages de dérivation (20, 21, 22, 32) se modifient dans l'ordre inverse, selon qu'ils suivent un mouvement dans le sens horaire ou dans le sens opposé,
  11. Outil à impulsions selon l'une quelconque des revendications précédentes,
    caractérisé en ce que l'unité d'impulsions (3) présente, à son extrémité (25) qui est opposée à l'arbre d'entraînement (11), un orifice de fluide (27) raccordé à une chambre de compensation (26).
  12. Outil à impulsions selon la revendication 11,
    caractérisé en ce que la chambre de compensation (26) présente un volume de compensation (28) pouvant varier indépendamment de la pression.
  13. Outil à impulsions selon l'une quelconque des revendications précédentes,
    caractérisé en ce que la chambre de compensation (26) est délimitée par le cylindre hydraulique (9) et un piston de compensation (29) réglable, dont le réglage s'effectue notamment par rotation dans le sens longitudinal (30).
  14. Outil à impulsions selon l'une quelconque des revendications précédentes,
    caractérisé en ce que le piston de compensation (29) peut être fixé, par rapport au cylindre hydraulique (9), dans au moins une position de rotation au moyen d'un dispositif de fixation (31).
EP06023567A 2006-11-13 2006-11-13 Outil rotatif à chocs et plaque antérieure pour celui ci Not-in-force EP1920888B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP06023567A EP1920888B1 (fr) 2006-11-13 2006-11-13 Outil rotatif à chocs et plaque antérieure pour celui ci
AT06023567T ATE506143T1 (de) 2006-11-13 2006-11-13 Impulswerkzeug und zugehörige vorderplatte
ES06023567T ES2365404T3 (es) 2006-11-13 2006-11-13 Herramienta de impulso y placa delantera correspondiente.
DE502006009359T DE502006009359D1 (de) 2006-11-13 2006-11-13 Impulswerkzeug und zugehörige Vorderplatte
US11/939,274 US7703546B2 (en) 2006-11-13 2007-11-13 Pulse tool and associated front plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06023567A EP1920888B1 (fr) 2006-11-13 2006-11-13 Outil rotatif à chocs et plaque antérieure pour celui ci

Publications (2)

Publication Number Publication Date
EP1920888A1 EP1920888A1 (fr) 2008-05-14
EP1920888B1 true EP1920888B1 (fr) 2011-04-20

Family

ID=37852308

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06023567A Not-in-force EP1920888B1 (fr) 2006-11-13 2006-11-13 Outil rotatif à chocs et plaque antérieure pour celui ci

Country Status (5)

Country Link
US (1) US7703546B2 (fr)
EP (1) EP1920888B1 (fr)
AT (1) ATE506143T1 (fr)
DE (1) DE502006009359D1 (fr)
ES (1) ES2365404T3 (fr)

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US6863134B2 (en) * 2003-03-07 2005-03-08 Ingersoll-Rand Company Rotary tool
ES2335911T3 (es) * 2006-11-13 2010-04-06 COOPER POWER TOOLS GMBH & CO. Herramienta de impulso.
ATE452731T1 (de) * 2006-11-13 2010-01-15 Cooper Power Tools Gmbh & Co Werkzeug mit einem hydraulikschlagwerk

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US7703546B2 (en) 2010-04-27
ES2365404T3 (es) 2011-10-04
DE502006009359D1 (de) 2011-06-01
EP1920888A1 (fr) 2008-05-14
US20090008117A1 (en) 2009-01-08
ATE506143T1 (de) 2011-05-15

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