EP1080848A2 - Pièce intermédiaire pour tiege de tournevis - Google Patents

Pièce intermédiaire pour tiege de tournevis Download PDF

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Publication number
EP1080848A2
EP1080848A2 EP00118451A EP00118451A EP1080848A2 EP 1080848 A2 EP1080848 A2 EP 1080848A2 EP 00118451 A EP00118451 A EP 00118451A EP 00118451 A EP00118451 A EP 00118451A EP 1080848 A2 EP1080848 A2 EP 1080848A2
Authority
EP
European Patent Office
Prior art keywords
axially
torque
clutch
housing
coupling
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.)
Withdrawn
Application number
EP00118451A
Other languages
German (de)
English (en)
Other versions
EP1080848A3 (fr
Inventor
Jochen Wüst
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1080848A2 publication Critical patent/EP1080848A2/fr
Publication of EP1080848A3 publication Critical patent/EP1080848A3/fr
Withdrawn legal-status Critical Current

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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
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/141—Mechanical overload release couplings
    • 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
    • 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
    • B25B23/142—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers
    • B25B23/1422—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters
    • B25B23/1427—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters by mechanical means

Definitions

  • the invention is based on a handheld screwdriver with an attachable Wave according to the preamble of claim 1 or of claim 10, as for example from DE-GM 18 71st 193 are known.
  • the aforementioned DE-GM 18 71 193 shows a motor driven handheld screwdriver, the output shaft of which is accessible Provide a standardized polygonal driving pin at the end is; for the rest is the output on the output shaft Torque adjustable.
  • a first Intermediate link in the form of an extension piece torsion-proof attached, which on the output shaft of the hand screwdriver opposite end with a polygonal opening and at the end facing the screwed material with one Polygonal plug is provided.
  • the shaft part of the pontic is a prismatic square pin of standardized Cross-section formed, the smooth in the end, polygonal spigot with the same cross section.
  • the end of the intermediate link carries a socket with which a twist-proof connection of the hand screwdriver to the twisting screw can be produced.
  • the pontic is used for the manual introduction of a precisely defined Torque from a torque wrench. To this purpose is axially on the square shaft of the intermediate link put on a riddle that has a radially protruding also standardized plug with a different cross-sectional shape carries, the latter in turn the mentioned Torque wrench is attached radially rigid.
  • a disadvantage of the combined known from DE-GM 18 71 193 Hand screwdriver is that with it a faulty screwing point not quickly by simply switching the direction of rotation of the drive can be screwed on again. It would the worker in the event of a defect on the just assembled Screwing involuntarily on screwing back, i.e. on Switch counterclockwise, but this would be in the pontic Lock integrated freewheel. In addition, at Carelessness of the torque wrench can be thrown around and injure the worker.
  • DE 35 10 605 A1 shows a motor-driven hand screwdriver for screwing in screws where the power flow from drive to output shaft after screwing in is automatically separated by a clutch. Indeed the power flow interruption does not depend on the torque, but depending on the state of touch Depth stop with the workpiece surface into which the screwed goods are to be screwed in.
  • the output shaft is axially movable in the screw gear and an axially lockable claw coupling with the Drive can be connected.
  • the claw coupling is operated by an axial pressure spring opened in unloaded state (initial or idle state) and by the axial reaction pressure of the screwed in Screw on the output shaft closed (working state).
  • the output shaft is of a sleeve-shaped, in its axial position adjustable, but otherwise rigid with the screw housing connected depth stop surrounded. If when screwing in a screw in a workpiece the depth stop applied to the workpiece surface, there is an axial Relief of the dog clutch because the reaction pressure from the moment the installation of the depth stop on from this becomes. If the screw is screwed further into the workpiece there is an axial relative displacement of the output shaft to the gear housing and thus to a beginning disengagement the claw coupling. Because of the continued screwing and the continuing relative movement has reached the state in which the disengagement stroke of the dog clutch was exceeded and this is fully open, so that the output shaft despite Continuing drive stops.
  • the special feature of the hand screwdriver known from DE 35 10 605 A1 is that the claw coupling is an intermediate washer and actually consists of two separate, axially connected series couplings is formed, the Claws are designed differently. Because of the different designed claws of the two partial clutches snaps always and only one partial clutch off, while the other Partial clutch never completely disengages. The desired one The effect is to avoid noise and wear if the drive continues to turn despite the clutch being open. Of the function is only in the known handheld screwdriver a disconnect clutch is available.
  • the object of the invention is an alternative embodiment of the generic hand-held screwdriver, with which a screw connection is not only quickly unscrewed and without Tool change to a tightly tolerated target torque can be tightened, but with the in the event of a fault Screwing and trying this with the handheld screwdriver want to loosen or dismantle again, a hazard avoided for the worker by the hand screwdriver becomes.
  • This task is based on the generic Hand screwdriver according to the invention in two ways, namely on the one hand by the characterizing features of claim 1 and on the other hand by the characterizing features of claim 10 solved.
  • the intermediate link inserted in the output of the hand screwdriver is significantly expanded in its function according to the invention.
  • the pontic after the first solution is one out of two in opposite directions switching single clutches formed interchangeable clutch provided, which can be switched over at a standstill. With her not only the power flow from the screwdriver to the torque wrench switched in the screw-in direction in a sensible manner be, but this is also easily in the opposite direction of rotation possible, so that in the same Can be worked safely even when turning to the left.
  • the power flow Solution becomes a different principle with the second solution embossed, namely an overtaking or freewheel principle both for the application of force by the torque wrench, as well as for the motor wrench.
  • screw connection would either be a Tool change required or it should - which is more appropriate Refinements of this solution of the invention are provided can be - either the freewheels in their blocking direction together switchable trained or by a reasonable switchable bypass and changeover clutch can be bypassed in the power flow his. After switching or bypassing the freewheels can the screwdriver according to the invention is also safe according to claim 10 be used to unscrew a screw.
  • FIG. 1 shows a combination tool according to the invention, which in essential from a motor-driven hand screwdriver 1, from one integrated in the torque-transmitting parts Intermediate member 5 and on an outside of it on pluggable Torque wrench 9 exists.
  • the handheld screwdriver is re of the torque that can be output on its output shaft 2 at least roughly presettable, with the presetting for safety-relevant and / or screwed connections requiring documentation not due to the spread of the moment can be adhered to precisely enough.
  • the output shaft 2 has in the illustrated embodiment on their accessible End a standardized polygonal driving pin 3 on the torque transmitting parts, e.g. an extension 4 or a screw nut adapted to the head of the screw 6 or the already mentioned intermediate member 5 is non-rotatable can be plugged on. These parts are for one with Pin 3 matching, standardized polygonal driving opening 13 Mistake. In principle, other torsion-resistant ones can also be used here Plug connections are used for torque transmission.
  • the intermediate links 5, 5 ', 5' ' are on the outside with a GeMuse 7, 7 ', 7' ', on the outside of which a standardized Radially protrudes plug pin 8 on which the torque wrench 9 can be attached rigidly. Furthermore, the intermediate links one facing the output shaft 2 of the hand screwdriver 1 lying drive member 10, 10 ', 10' ', which is rotatably mounted in the housing 7, 7 ', 7' 'and which with a polygonal opening 13 is provided.
  • the axially movable drive member 10, 10 '( Figures 2 and 3) in Housing 7, 7 ' is a radial bearing 11, 11' and an axial bearing 12, 12 'provided.
  • an output member 14, 14 ', 14' ' which is also rotatably mounted in the housing 7, 7 ', 7' 'and which is also provided with a standardized polygonal pin 16 is.
  • the output member 14, 14 'of the intermediate member 5, 5' 2 or 3 is - in contrast to its drive member - Axially immobile in the pontic.
  • the output member 14, 14 ' in the housing 7, 7 ' by both radial and axial components receiving ball bearing 15 stored. It is different with Embodiment of the intermediate member 5 '' according to Figure 4.
  • the output member 14 ′′ is axially movable in the housing 7 ′′ the plain bearing 41 is mounted, which axial movements of the output member 14 '' relative to the housing 7 ''.
  • the intermediate member 5 5 ', 5' 'is also a first detachable Coupling 17, 17 ', 17' 'provided with the drive member 10, 10 ', 10' 'with the output member 14, 14', 14 '' of the intermediate member can be coupled rigidly.
  • the clutch is designed as a positive coupling, i.e. both coupling parts are provided with interlocking elements that prevent rotation Adherence of the coupling parts due to the shape of the individual, interlocking interlocking elements even with relative cause less mutual pressure on the coupling parts.
  • the first clutch 17, 17 ', 17' ' is connected within the Intermediate link fixed coupling part 19, 19 ', 19' 'and an axially movable coupling part 20, 20 ', 20' '.
  • the clutch becomes by an axial movement of this coupling part 17, 17 ', 17' 'closed or opened. Because one Switching movement only at standstill or quasi-standstill takes place, the clutch can be easily used as a positive coupling be designed. Even if it happens by chance when it snaps into place should result in a tooth-on-tooth position, so that for a tooth-to-gap position required by a initially very slow relative rotation of the coupling parts brought about.
  • the coupling parts 19, 19 ', 19' 'and 20, 20', 20 '' are then due to the permanent force of the actuating spring 31, 31 ', 42 quickly moved into each other.
  • 5 ', 5' ' is a second detachable Coupling 18, 18 ', 18' 'provided with which the housing 7, 7', 7 '' of the intermediate member in a rotationally rigid manner to the output member 14, 14 ', 14 '' can be coupled.
  • This coupling 18, 18 ', 18' ' is designed as a positive coupling and this coupling has a fixed coupling part 21 21 ', 21' 'and axially movable coupling part 22, 22 ', 22' '.
  • first clutch 17, 17 ', 17' 'on the one hand axially opposite for the closing and opening position of the second Coupling 18, 18 ', 18' 'on the other hand.
  • the first clutch 17, 17 ', 17' ' is activated by actuating the axially movable coupling part 20, 20 ', 20' 'closed in direction 23.
  • the direction of operation 24, with which the second clutch 18, 18 ', 18' ' can be brought into the closed state is straight oppositely directed.
  • the moveable Coupling parts 20, 20 '; 22, 22 'of both couplings of the intermediate link 5, 5 'according to Figure 2 or 3 mechanically by a centrally located pressure pin 25 ( Figure 2) or by a peripheral pressure sleeve 25 '(FIG. 3) coupled to one another in such a way that the two clutches 17 and 18 or 17 'and 18' act together as a changeover or changeover clutch.
  • the two axially movable coupling parts 20 "and 22" structurally united to a uniform coupling flange 43, the radial protrudes from the axially movable output member 14 '' and the the opposite flat sides, the positive locking elements of the movable coupling parts carries.
  • the second clutch 18, 18 ', 18' ' is opened first.
  • the working method of the combination tool runs with the described Design of the intermediate member 5, 5 ', 5' 'contained therein as follows:
  • the worker guides the combination tool in the Basic arrangement according to Figure 1 with the handheld screwdriver 1 in the left and the torque wrench 9 in the right hand and place the screw nut on the front of the screwed item 6 of the workpiece.
  • Figure 1 illustrated combination tool if necessary also in mirror image Arrange the arrangement of the components, such as it would be useful for lefties.
  • intermediate links For the sake of completeness, an alternative embodiment of the intermediate links should be mentioned here, in which the direction of actuation and the order of actuation of the two clutches is exactly the reverse as previously described, which can be achieved without difficulty by a modified construction of the intermediate links and a different arrangement of the actuating springs in the intermediate link .
  • the actuation springs should be arranged between the axially movable and the fixed parts of the couplings that in the axially unloaded state of the intermediate member, the first clutch is in the closed state and the second clutch is in the open state.
  • the actuation of the second clutch 18 of the exemplary embodiment 2 is somewhat more complicated than the actuation the first clutch 17 there, which is because the axially movable part 22 of the second clutch - from the drive member 10 seen from - is somewhat unfavorably accessible.
  • the outside on a guide tube 26 of the output member is.
  • the guide tube are axially extending Elongated holes 27 incorporated.
  • One Design can be a mechanical actuation force in Opening sense - against the force of the actuating spring 32 - on the part of the drive member 10 via the axially into the guide tube 26 protruding pressure pin 25 are exercised, the its pressure over the center piece 34 and the driving pin passes on the sleeve 22a.
  • torque can only be exerted with a lever if at the same time in two spaced locations two opposing forces act, namely an action force and a counter force. If the lever more or less freely movable, as with the torque wrench the case is, when it is operated in the The counterforce can be applied near the turning center.
  • the counterforce can be applied near the turning center.
  • the chain of the torque transmitting parts from the output shaft 2 of the hand screwdriver to the screwed goods relatively short.
  • the target tightening torques that occur not extremely high. Under these conditions can the torque wrench 9 when tightening the screw held against the target tightening torque with the hand screwdriver become.
  • the outside of the housing 7, 7 ', 7' ', 51 is radial protruding, standardized plug pin 8 for attaching the torque wrench 9 axially at the output end of the housing 7, 7 ', 7' ', 51 arranged.
  • the main load is held up to the previously fixed screwing point of the workpiece.
  • the standardized plug 8 compared to the output side End of the housing 7 '' axially towards the To arrange the screw connection offset and if necessary, i.e. if the offset is greater than the axial thickness of the pin 8 is, with the housing via a housing-integrated Connect shell.
  • the handle 29 projects approximately rectilinearly radially from the housing of the pontic, which takes up a relatively large amount of space. In order even in somewhat cramped environments To be able to hold against with a handle 29 'is the handle 29 '( Figure 2) over two cheeks welded to the housing 7 30 aligned approximately parallel to the housing 7.
  • the first coupling 17' is designed as a plug-in coupling with a polygonal plug pin 20 'on the one hand, namely on the drive side and a polygonal plug opening 19' arranged concentrically thereto.
  • This plug-in coupling requires an adjustment path from the first snapping on the coupling parts to complete engagement, which corresponds to the length of the plug-in pin 20 '.
  • the second clutch 18 ' is designed as a sliding sleeve coupling with a sliding sleeve 22b with an axial length L s , which is provided on the outside with a spline profile and on the inside with a spline profile.
  • the sliding sleeve engages in a corresponding spline profile on the inside of the housing 7 'and in a spline profile 39 on the output member 14', but is axially displaceable in these splines.
  • the housing-side spline profile is axially approximately as long (L s ) as the sliding sleeve 22b, whereas the other, namely the output-side spline profile 39 is axially at least as long (L k ) as the displacement distance s of the sliding sleeve 22b plus its axial length L s is measured.
  • the sliding sleeve 22b is the axially displaceable drive member 10 'moved over the pressure sleeve 25', namely when attaching the screwdriver to the screwed goods and when pressing the screwdriver against the drive member Force shifted to the right by the actuating springs 31 'and 32', the total displacement s relative to the pontic is covered.
  • the pontic is now for a drive through from the Drive (10 ') prepared on the output side.
  • the two couplings 17 and 18 or 17' and 18 ' are structurally completely separate from one another. They are in the rest of the on drive side, ie, 'actuated by an axial displacement of the drive member 10 or 10 relative to the intermediate member.
  • the output link is 14 '' axially movable with an appropriately trained Plain bearing 41 mounted in the intermediate link, whereas that Drive member 10 '' by means of the axially immovable ball bearing 35 is axially fixed in the housing 7 ''.
  • the axially movable Parts 20 “and 22" of both clutches 17 “and 18" are connected to the output member 14 ′′ and arranged there united coupling flange 43 united.
  • the positive locking elements of the two movable coupling parts are open axially opposite sides of the coupling flange 43 are arranged.
  • the intermediate element shown in Figure 4 the positive locking elements the coupling parts are designed as claw rings.
  • the one on the drive link 14 '' attached positive locking elements of the fixed Part 19 '' of the first coupling 17 '' and that on the housing 7 '' attached positive locking elements of the fixed part 21 '' the second clutch 18 ′′ are in axial comparison the positive locking elements of the coupling flange 43 with proper mutual axial spacing. And that corresponds the clear distance between the last two, fixed Form-fit elements at least the over-all dimension of the opposite Positive locking elements of the coupling flange 43 plus a certain axial play.
  • the drive (10 ) and the output member 14" are telescopic slidable into each other and so guided each other. Furthermore is the output member in the housing 7 ′′ in the slide bearing 42 axially guided. Between the drive and driven member is one Actuating spring 42 arranged which the positive locking elements of the Coupling flange 43 axially in the fixed part 21 '' second coupling of the housing clamps.
  • the adjustment of the biasing force of the actuation springs can already be done through targeted pre-selection of the actuating springs themselves and / or by selecting appropriate washers the spring plates.
  • this procedure only allows a classification of the preload within a relatively large Stages.
  • the biasing force of the actuating spring 31 ' is in the in FIG. 3rd shown intermediate member 5 'several, preferably three of externally accessible adjusting screws 41 on the drive member 10 ' provided that is arranged evenly distributed in the circumferential direction are.
  • the axial position can be adjusted using the adjusting screws of the pivot bearing 33 'of the spring support relative to the drive member can be set, with which the spring preload being affected.
  • the intermediate link shown in Figure 4 5 "is an adjusting screw centrally on the drive member 10" 45 provided.
  • the adjustment screws are preferred difficult to turn, e.g. through an integrated Plastic ring can be effected so that the set The preload cannot be misaligned.
  • the intermediate link 50 has an annular outside Housing 51 on, of which the outside of the already multiple mentioned, standardized plug 8 protrudes.
  • a transmission member 53 is rotatable in a slide bearing 54 stored.
  • the transmission link is at one end (in FIG. 5 left) at least indirectly - more on this below - with a standardized polygonal drive opening 55 and the other Provide the end with a matching polygonal drive pin 16.
  • Between the annular housing 51 and the transmission member 53 is one in the tightening direction of rotation of the screwed material 6 locking ratchet arranged, in Figure 5 only the associated row of teeth 52 is drawn.
  • annular housing 51 is an elastically biased ratchet tooth pivoted, which locks tangentially into the Tooth gaps in the row of teeth 52.
  • a positive one working ratchet is also a non-positive and noise-free freewheel conceivable.
  • the blocking direction is such that when the housing 51 is stationary, the transmission member 53 in the screwing-in direction of the screwed item twisted, but the opposite direction of rotation blocked is.
  • the screw When working with the intermediate member 50, the screw is screwed in with the hand screwdriver and up to one provisional moment attracted, being the transmission link 53 in the stationary housing 51 in the screwing-in direction of rotation can turn.
  • the worker can immediately afterwards the transmission link by means of the now ratchet in the same direction of rotation as before until the target torque is reached keep turning. It doesn't need to be switched and / or nothing to be changed because of the tendency of relative rotation when turning the transmission member 53 by means of of the housing 51 with respect to the previous relative rotation is just the opposite.
  • a piece of the torque-transmitting members namely, the part that the polygonal driver opening 55 on the screwdriver side, with the actual transmission link 53 rotatably via a bearing 56 connected, whereby - apart from a normal camp game - Axial mobility of the connected parts excluded is. That is, the rear part protruding from the housing 51 of the transmission element 53 surrounded by a further housing 58, which in the screwdriver polygonal drive opening 55 load-bearing part passes.
  • both ratchets 52 and 57 in the Locking direction reversed the worker can safely without further ado a damaged screw with the Unscrew the hand screwdriver.
  • the actuating devices are expedient to switch both ratchets or Freewheels from “right-locking” to "left-locking” and vice versa so positively coupled that both ratchets or freewheels only together and in the same direction with each other can be switched.
  • the combination tool can also be used to remove screws be used, however, is the hazard described above when unscrewing a damaged screw Carelessly banished.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
EP00118451A 1999-09-04 2000-08-25 Pièce intermédiaire pour tiege de tournevis Withdrawn EP1080848A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19942292 1999-09-04
DE1999142292 DE19942292C2 (de) 1999-09-04 1999-09-04 Zwischenglied für eine Handschrauberwelle

Publications (2)

Publication Number Publication Date
EP1080848A2 true EP1080848A2 (fr) 2001-03-07
EP1080848A3 EP1080848A3 (fr) 2002-10-23

Family

ID=7920840

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00118451A Withdrawn EP1080848A3 (fr) 1999-09-04 2000-08-25 Pièce intermédiaire pour tiege de tournevis

Country Status (2)

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EP (1) EP1080848A3 (fr)
DE (1) DE19942292C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004101227A1 (fr) * 2003-05-17 2004-11-25 Wera Werk Hermann Werner Gmbh & Co Kg Tournevis a limitation du couple de rotation
CN107847235A (zh) * 2015-07-22 2018-03-27 蛇牌股份公司 用于具有附加手动驱动单元的外科手术钻的工具配件附件和外科手术钻

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015111878A1 (de) 2015-07-22 2017-01-26 Aesculap Ag Platzsparende Ratscheinheit mit Freilauf
CN107932394B (zh) * 2017-12-27 2024-01-30 广州亨龙智能装备股份有限公司 螺丝拧紧组件及拧紧装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB233207A (en) * 1924-08-06 1925-05-07 Abdulla & Company Ltd Improvements in apparatus for screwing up nuts or screws
DE1871193U (de) * 1962-12-19 1963-04-25 Ford Werke Ag Vorrichtung zum anziehen von schrauben.
FR2301336A1 (fr) * 1975-02-24 1976-09-17 Chausson Usines Sa Dispositif adaptateur regulateur de couple de serrage pour machine a visser
DE4342464A1 (de) * 1993-12-13 1995-06-14 Joerg R Bauer Schraubenschlüssel zum Fest- oder Losdrehen einer Schraube oder Mutter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2227627A (en) * 1938-11-03 1941-01-07 Perfection Auto Parts Mfg Co Rotary tool
DE2807677C3 (de) * 1978-02-23 1980-12-04 Mannesmann Demag Ag, 4100 Duisburg Hydraulisches Schraubgerät
DE3510605A1 (de) * 1985-03-23 1986-10-02 C. & E. Fein Gmbh & Co, 7000 Stuttgart Kupplung fuer kraftgetriebene schraubwerkzeuge

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB233207A (en) * 1924-08-06 1925-05-07 Abdulla & Company Ltd Improvements in apparatus for screwing up nuts or screws
DE1871193U (de) * 1962-12-19 1963-04-25 Ford Werke Ag Vorrichtung zum anziehen von schrauben.
FR2301336A1 (fr) * 1975-02-24 1976-09-17 Chausson Usines Sa Dispositif adaptateur regulateur de couple de serrage pour machine a visser
DE4342464A1 (de) * 1993-12-13 1995-06-14 Joerg R Bauer Schraubenschlüssel zum Fest- oder Losdrehen einer Schraube oder Mutter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004101227A1 (fr) * 2003-05-17 2004-11-25 Wera Werk Hermann Werner Gmbh & Co Kg Tournevis a limitation du couple de rotation
CN107847235A (zh) * 2015-07-22 2018-03-27 蛇牌股份公司 用于具有附加手动驱动单元的外科手术钻的工具配件附件和外科手术钻
US10702284B2 (en) 2015-07-22 2020-07-07 Aesculap Ag Tool fitting attachment for a surgical drill with additional manual drive unit, and surgical drill

Also Published As

Publication number Publication date
DE19942292C2 (de) 2001-09-27
DE19942292A1 (de) 2000-10-26
EP1080848A3 (fr) 2002-10-23

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