US20070125566A1 - Reversing unit for a hand-held power tool - Google Patents
Reversing unit for a hand-held power tool Download PDFInfo
- Publication number
- US20070125566A1 US20070125566A1 US11/559,680 US55968006A US2007125566A1 US 20070125566 A1 US20070125566 A1 US 20070125566A1 US 55968006 A US55968006 A US 55968006A US 2007125566 A1 US2007125566 A1 US 2007125566A1
- Authority
- US
- United States
- Prior art keywords
- unit
- reversing
- tool
- drive
- output direction
- 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.)
- Abandoned
Links
- 230000008878 coupling Effects 0.000 claims description 21
- 238000010168 coupling process Methods 0.000 claims description 21
- 238000005859 coupling reaction Methods 0.000 claims description 21
- 238000010276 construction Methods 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- 230000004913 activation Effects 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 208000037974 severe injury Diseases 0.000 description 1
- 230000009528 severe injury Effects 0.000 description 1
Images
Classifications
-
- 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
- B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/008—Gear boxes, clutches, bearings, feeding mechanisms or like equipment
Definitions
- the protection unit is advantageously provided for the purpose of automatically switching on the compensating drive as a function of a retention signal which signals that driving is being maintained in one output direction.
- a retention signal which signals that driving is being maintained in one output direction.
- the protection unit is provided for the purpose of automatically switching on the compensating drive in the reverse direction after a preset rotational travel of the tool unit in one output direction is completed.
- This makes it possible to achieve a high level of safety during operation of the hand-held power tool, said level of safety being suitable, in particular, for DIY by children.
- a child protection mode can be obtained, in which a small rotational travel of the tool unit is set prior to operation, and the compensating drive is switched on automatically, without involvement of the child, after this rotational travel is completed.
- the rotational travel can be designed as an angle of rotation or as a number of revolutions of the tool unit.
- the protection unit is provided for the purpose of at least substantially compensating for a rotational travel of the tool unit completed during driving by means of a compensating drive.
- This is advantageously suitable for uses of the hand-held power tool in which the latter is operated with small rotational travels of the tool unit, such as, in particular, during DIY by children.
- the rotational travel is preferably substantially compensated for if, after completion of the rotational travel, the tool unit is driven in the reverse direction by at least 70% and preferably more than 80%, in particular more than 90%, of the rotational travel.
- the reversing unit for the hand-held power tool includes a setting unit which is provided for setting a rotational travel of the tool unit. This makes it possible to achieve a high level of operating convenience of the hand-held power tool.
- the setting unit With the setting unit, a maximum rotational travel for driving in the output direction and/or for the compensating drive in the reverse direction can be set.
- the coupling device preferably has at least two coupling elements which are provided relative to each other for opposed rotation during running of the drive unit. This makes it possible to achieve a particularly simple construction of the coupling device.
- an output element connected in a rotationally fixed manner to the tool unit can be arranged displaceably between the coupling elements. During a reversing operation, said output element can be coupled to one of the coupling elements depending on the desired output direction.
- protection unit can be switched on and off, an advantageous level of flexibility can be achieved in the use of the hand-held power tool.
- FIG. 1 shows a drill with internal elements in a side view in accordance with the present invention
- FIG. 2 shows a setting unit of the drill from FIG. 1 in accordance with the present invention
- FIG. 1 shows a hand-held power tool 10 designed as a drill. It has a housing 12 with a handle 14 and a drive switch 16 . A tool holding fixture 18 and a tool 20 fastened in the tool holding fixture 18 can also be seen. The tool holding fixture 18 and the tool 20 form a tool unit 22 .
- the tool 20 is designed as a drill bit in the figure.
- the tool unit 22 is connected to an output shaft 24 in a rotationally fixed manner. The latter is coupled via a gear unit 26 to a drive unit 28 which comprises an electric motor 30 and a drive shaft 32 .
- the control unit 42 can be programmed by an operator via the setting unit 46 , which is illustrated in a front view in FIG. 2 .
- Said control unit has actuating elements 48 and an LED indicating device 50 .
- the setting unit 46 enables the operator to switch the protection unit 40 on and off.
- the control unit 42 does not have any influence on the drive unit 28 and the reversing device 38 , with it being possible for the hand-held power tool 10 to be operated as a conventional drill or powered screwdriver.
- the protection unit 40 is switched on, the operator can select a certain protection mode of the protection unit 40 by means of the actuating elements 48 and the LED indicating device 50 .
- the control unit 42 controls the reversing device 38 and the drive unit 28 .
- the tool unit 22 is driven by the same predetermined number of revolutions in the output direction 36 .
- the control unit 42 again switches on driving in the output direction 34 with the predetermined number of revolutions, which, after completion, is compensated for again by a compensating drive in the output direction 36 , etc.
- This cycle of drive and compensating drive is repeated until the child lets go of the drive switch 16 .
- this child protection mode by limiting the revolutions—advantageously to a small number—and by the fully automatic switching on of the compensating drive by the control unit 42 , the risk of body parts and/or items of clothing being strongly pulled in can be reduced.
- the latter subsequently controls the reversing device 38 and the drive unit 28 , so that the compensating drive is switched on.
- the tool unit 22 is driven through a predetermined number of revolutions in the output direction 36 . This number can likewise be predetermined by the operator by means of the setting unit 46 .
- the protection unit 40 is provided with a further protection mode which corresponds to a low level of safety.
- a retention signal can be transmitted to the control unit 42 and the compensating drive will therefore be started by the operator actuating an emergency trip switch 52 .
- the hand-held power tool 10 can be used as a conventional hand-held power tool by the operator until the emergency trip switch 52 is actuated.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Auxiliary Devices For Machine Tools (AREA)
- Percussive Tools And Related Accessories (AREA)
- Scissors And Nippers (AREA)
Abstract
A reversing unit for a hand-held power tool has a reversing device for reversing an output direction, a drive unit, a tool unit drivable in rotary manner through at least one semi-revolution by the drive unit, and a protection unit provided for at least partially compensating for driving of the tool unit in one output direction in at least partially automated manner by a compensating device in a reverse direction.
Description
- The invention described and claimed hereinbelow is also described in German Patent Application DE 102005057268.5 filed on Dec. 1, 2005. This German Patent Application, whose subject matter is incorporated here by reference, provides the basis for a claim of priority of invention under 35 U.S.C. 119(a)-(d).
- The present invention relates to reversing units for a hand-held power tool with a reversing device.
- Hand-held power tools are known, in particular drills which have an additional screwing function. In the case of these hand-held power tools, a tool can be driven in a rotary manner in two different output directions. In order to reverse the output direction, the hand-held power tool is provided with a mechanical reversing device which includes an actuating device. After an operator has reversed the output direction, driving of the tool in the reverse output direction can be started by further actuation of a driving switch.
- The invention is based on a reversing unit for a hand-held power tool, with a reversing device for reversing an output direction, in which a tool unit can be driven in a rotary manner through at least one semi-revolution by a drive unit.
- It is proposed that the reversing unit for a hand-held power tool has a protection unit which is provided for the purpose of at least partially compensating for driving the tool unit in one output direction in an at least partially automated manner by means of a compensating drive in the reverse direction. This makes it possible to achieve a high level of safety during operation of a hand-held power tool, in particular a drill. The compensating drive makes it possible to oppose, in particular hair, body parts and/or items of clothing being strongly pulled into the rotating tool unit, which may lead to an operator suffering severe injuries. In this connection, a “tool unit” is to be understood as meaning, in particular, an element or a unit of elements of the hand-held power tool which are connected in a rotationally fixed manner to an output shaft of the hand-held power tool, such as, for example, a tool, a tool holding fixture, an additional unit for inserting into the tool holding fixture, etc.
- The protection unit is advantageously provided for the purpose of automatically switching on the compensating drive as a function of a retention signal which signals that driving is being maintained in one output direction. As a result, if, during the driving of the tool unit, the operator perceives that there is the risk of, for example, hair, items of clothing and/or body parts being pulled in, rapid activation of the compensating drive can be achieved. Protection modes for the hand-held power tool are conceivable, in which the retention signal is generated, for example, by actuation of an emergency switching-off element or by letting go of a driving switch.
- In a further embodiment of the invention, it is proposed that the protection unit is provided for the purpose of automatically switching on the compensating drive in the reverse direction after a preset rotational travel of the tool unit in one output direction is completed. This makes it possible to achieve a high level of safety during operation of the hand-held power tool, said level of safety being suitable, in particular, for DIY by children. For example, a child protection mode can be obtained, in which a small rotational travel of the tool unit is set prior to operation, and the compensating drive is switched on automatically, without involvement of the child, after this rotational travel is completed. The rotational travel can be designed as an angle of rotation or as a number of revolutions of the tool unit.
- In addition, it is proposed that the protection unit is provided for the purpose of at least substantially compensating for a rotational travel of the tool unit completed during driving by means of a compensating drive. This is advantageously suitable for uses of the hand-held power tool in which the latter is operated with small rotational travels of the tool unit, such as, in particular, during DIY by children. The rotational travel is preferably substantially compensated for if, after completion of the rotational travel, the tool unit is driven in the reverse direction by at least 70% and preferably more than 80%, in particular more than 90%, of the rotational travel.
- In a further embodiment of the invention, it is proposed that the reversing unit for the hand-held power tool includes a setting unit which is provided for setting a rotational travel of the tool unit. This makes it possible to achieve a high level of operating convenience of the hand-held power tool. With the setting unit, a maximum rotational travel for driving in the output direction and/or for the compensating drive in the reverse direction can be set.
- It is furthermore proposed that the reversing unit for a hand-held power tool includes a setting unit which is provided for the purpose of setting a protection mode, thus enabling a high level of flexibility to be achieved in the use of the hand-held power tool.
- A further embodiment makes provision for the reversing device to be provided for reversing the output direction during running of the drive unit. A delay in the reversing of the output direction that can be attributed to inertia of driving elements during holding and starting of the drive unit can thereby be advantageously reduced.
- In this connection, it is proposed that the reversing device comprises a coupling device, thus making it possible for existing and cost-effective elements to be used for the reversing device.
- The coupling device preferably has at least two coupling elements which are provided relative to each other for opposed rotation during running of the drive unit. This makes it possible to achieve a particularly simple construction of the coupling device. For example, an output element connected in a rotationally fixed manner to the tool unit can be arranged displaceably between the coupling elements. During a reversing operation, said output element can be coupled to one of the coupling elements depending on the desired output direction.
- If the protection unit can be switched on and off, an advantageous level of flexibility can be achieved in the use of the hand-held power tool.
- Further advantages emerge from the description below of the drawing. The drawing illustrates an exemplary embodiment of the invention. The drawing, the description and the claims contain numerous features in combination. A person skilled in the art will expediently also consider the features individually and put them together to form meaningful further combinations.
-
FIG. 1 shows a drill with internal elements in a side view in accordance with the present invention, -
FIG. 2 shows a setting unit of the drill fromFIG. 1 in accordance with the present invention, and -
FIG. 3 shows a coupling device of the drill fromFIG. 1 in accordance with the present invention. -
FIG. 1 shows a hand-heldpower tool 10 designed as a drill. It has ahousing 12 with ahandle 14 and adrive switch 16. Atool holding fixture 18 and atool 20 fastened in thetool holding fixture 18 can also be seen. Thetool holding fixture 18 and thetool 20 form atool unit 22. Thetool 20 is designed as a drill bit in the figure. Thetool unit 22 is connected to anoutput shaft 24 in a rotationally fixed manner. The latter is coupled via agear unit 26 to adrive unit 28 which comprises anelectric motor 30 and adrive shaft 32. Thetool unit 22 can be driven by thedrive unit 28 via theoutput shaft 24 in a rotary manner through at least one semi-revolution in one output direction 34 (right-handed rotation) and in an output direction 36 (left-handed rotation) opposed to theoutput direction 34. During use of the hand-heldpower tool 10 as a drill, thetool unit 22 is driven in theoutput direction 34. - The hand-held
power tool 10 is furthermore provided with areversing unit 37. The latter has areversing device 38 which is arranged in thegear unit 26 and serves to reverse theoutput direction power tool 10. The construction and the operation of thereversing device 38 are described in more detail with reference toFIG. 3 . In addition, thereversing unit 37 for a hand-held power tool comprises aprotection unit 40 which is provided for the purpose of at least partially compensating for driving thetool unit 22 in theoutput direction reverse output direction protection unit 40 is provided with anelectronic control unit 42 which is connected electrically to theelectric motor 30, thereversing device 38 and asensor unit 44 assigned to thedrive switch 16. Furthermore, thecontrol unit 42 is connected to asetting unit 46 which is integrated in thehandle 14. - The
control unit 42 can be programmed by an operator via thesetting unit 46, which is illustrated in a front view inFIG. 2 . Said control unit has actuatingelements 48 and anLED indicating device 50. Thesetting unit 46 enables the operator to switch theprotection unit 40 on and off. When theprotection unit 40 is switched off, thecontrol unit 42 does not have any influence on thedrive unit 28 and thereversing device 38, with it being possible for the hand-heldpower tool 10 to be operated as a conventional drill or powered screwdriver. When theprotection unit 40 is switched on, the operator can select a certain protection mode of theprotection unit 40 by means of theactuating elements 48 and theLED indicating device 50. - It is assumed first of all that the hand-held
power tool 10 is used for DIY, for example drilling of a workpiece, by a child. The operator can set a child protection mode by means of thesetting unit 46. During operation in this child protection mode, which corresponds to a high level of safety, when thedrive switch 16 is actuated, thetool unit 22 is driven through a predetermined, limited number of revolutions in theoutput direction 34. This number can likewise be input by the operator via theactuating elements 48. After the predetermined rotational travel of thetool unit 22 in theoutput direction 34 is completed, thecontrol unit 42 automatically switches on a compensating drive of thetool unit 22. - For this purpose, the
control unit 42 controls the reversingdevice 38 and thedrive unit 28. During this compensating drive, thetool unit 22 is driven by the same predetermined number of revolutions in theoutput direction 36. After the compensating drive has finished, thecontrol unit 42 again switches on driving in theoutput direction 34 with the predetermined number of revolutions, which, after completion, is compensated for again by a compensating drive in theoutput direction 36, etc. This cycle of drive and compensating drive is repeated until the child lets go of thedrive switch 16. In this child protection mode, by limiting the revolutions—advantageously to a small number—and by the fully automatic switching on of the compensating drive by thecontrol unit 42, the risk of body parts and/or items of clothing being strongly pulled in can be reduced. - It is furthermore conceivable that switching from this child protection mode into a further mode takes place by means of an access authorization, for example by a code being input by means of the
setting unit 46. This makes it possible to avoid a child switching off the child protection mode selected specifically for his DIY and using the hand-heldpower tool 10 in a mode with a lower safety level. - It is now assumed that the hand-held
power tool 10 is being used by an adult. By means of thesetting unit 46, the operator can select a corresponding protection mode which corresponds to a medium level of safety. In this protection mode, thetool unit 22 can be driven in theoutput direction 34 without limiting the number of revolutions. After maintaining this drive, a compensating drive of thetool unit 22 in theoutput direction 36 is started. This is realized by means of thesensor unit 44, which is connected to thedrive switch 16, and thecontrol unit 42. If the operator lets go of thedrive switch 16 during driving, for example in a hazardous situation, thesensor unit 44 sends a retention signal to thecontrol unit 42. The latter subsequently controls the reversingdevice 38 and thedrive unit 28, so that the compensating drive is switched on. During this compensating drive, thetool unit 22 is driven through a predetermined number of revolutions in theoutput direction 36. This number can likewise be predetermined by the operator by means of thesetting unit 46. - Furthermore, the
protection unit 40 is provided with a further protection mode which corresponds to a low level of safety. In this protection mode, a retention signal can be transmitted to thecontrol unit 42 and the compensating drive will therefore be started by the operator actuating anemergency trip switch 52. The hand-heldpower tool 10 can be used as a conventional hand-held power tool by the operator until theemergency trip switch 52 is actuated. - The construction and the operation of the reversing
device 38 are explained with reference toFIG. 3 . The reversingdevice 38 is provided for the purpose of reversing an output direction of thetool unit 22 during running of thedrive unit 28. For this purpose, the reversingdevice 38 comprises acoupling device 54 with afirst coupling element 56, which is designed as a coupling disk and can be driven to rotate in theoutput direction drive unit 28, and with asecond coupling element 58, which is designed as a coupling disk and can be driven to simultaneously rotate in theoutput direction drive unit 28. In addition, thecoupling device 54 has a carry-alongelement 60 which is connected to theoutput shaft 24 in a rotationally fixed manner. Said carry-along element is arranged between thecoupling elements axial direction 61 and can be adjusted until it comes into contact with the first or thesecond coupling element - For this purpose, the carry-along
element 60 is movable on theoutput shaft 24 in a translatory manner in theaxial direction 61. Thefirst coupling element 56 can be driven by thedrive shaft 32 of thedrive unit 28 via agear 62 to rotate in theoutput direction second coupling element 58 can be driven via anintermediate shaft 64 with teeth to rotate in theoutput direction element 60 is led through thefirst coupling element 56. To drive a translatory movement of the carry-alongelement 60, the reversingdevice 38 is provided with an adjustingunit 66 which is controlled by thecontrol unit 42 during a reversal of the output direction. For this purpose, the adjustingunit 66 is connected to thecontrol unit 42 via anelectric connection 68. - It will be understood that each of the elements described above, or two or more together, may also find a useful application in other types of constructions differing from the type described above.
- While the invention has been illustrated and described as embodied in a reversing unit for a hand held power tool, it is not intended to be limited to the details shown, since various modifications and structural changes may be made without departing in any way from the spirit of the present invention.
- Without further analysis, the foregoing will so fully reveal the gist of the present invention that others can, be applying current knowledge, readily adapt it for various applications without omitting features that, from the standpoint of prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention.
- What is claimed as new and desired to be protected by Letters Patent is set forth in the appended claims.
Claims (11)
1. A reversing unit for a hand-held power tool, comprising a reversing device for reversing an output direction; a drive unit; a tool unit drivable in rotary manner through at least one semi-revolution by said drive unit; a protection unit provided for at least partial compensating for driving of said tool unit in one output direction in at least partially automated manner by a compensating drive in a reverse direction.
2. A reversing unit as defined in claim 1 , wherein said protection unit is configured for automatically switching on said compensating drive as a function of a retension signal which signals that driving is being maintained in the one output direction.
3. A reversing unit as defined in claim 1 , wherein said protection unit is configured for automatically switching on said compensating drive in the reverse direction after a preset rotational travel of said tool unit in the one output direction is completed.
4. A reversing unit as defined in claim 1 , wherein said protection unit is configured for at least substantially compensating for a rotational travel of said tool unit completed during driving by said compensating drive.
5. A reversing unit as defined in claim 1; and further comprising a setting unit configured for setting a rotational travel of said tool unit.
6. A reversing unit as defined in claim 1; and further comprising a setting unit configured for setting a protection mode.
7. A reversing unit as defined in claim 1 , wherein said reversing device is configured for reversing the output direction during running of said drive unit.
8. A reversing unit as defined in claim 1 , wherein said reversing device comprises a coupling device.
9. A reversing unit as defined in claim 8 , wherein said coupling device has at least two coupling elements which are provided for opposite rotation relative to each other during running of said drive unit.
10. A reversing unit as defined in claim 1 , wherein said protection unit is configured so that it is switchable on and off.
11. A hand-held power tool, comprising a reversing unit, said reversing unit including a reversing device for reversing an output direction, a drive unit, a tool unit drivable in rotary manner through at least one semi-revolution by said drive unit, a protection unit provided for at least partially compensating for driving of said tool unit in one output direction in at least partially automated manner by a compensating drive in a reverse direction.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005057268A DE102005057268A1 (en) | 2005-12-01 | 2005-12-01 | Hand power tools reversing unit |
DE102005057268.5 | 2005-12-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20070125566A1 true US20070125566A1 (en) | 2007-06-07 |
Family
ID=37671540
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/559,680 Abandoned US20070125566A1 (en) | 2005-12-01 | 2006-11-14 | Reversing unit for a hand-held power tool |
Country Status (4)
Country | Link |
---|---|
US (1) | US20070125566A1 (en) |
CN (1) | CN1974141A (en) |
DE (1) | DE102005057268A1 (en) |
GB (1) | GB2432803B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150122520A1 (en) * | 2013-11-07 | 2015-05-07 | Apex Brands, Inc. | Tooling System with Visual Identification of Attached Component |
JP2017001115A (en) * | 2015-06-05 | 2017-01-05 | 株式会社マキタ | Working tool |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011017579A1 (en) * | 2011-04-27 | 2012-10-31 | Hilti Aktiengesellschaft | Machine tool and control method |
DE102011085561A1 (en) * | 2011-06-06 | 2012-12-06 | Robert Bosch Gmbh | Hand machine tool fixture |
DE102015226086A1 (en) * | 2015-12-18 | 2017-06-22 | Robert Bosch Gmbh | Hand tool with adjustable direction of rotation |
DE102016211016A1 (en) * | 2016-06-21 | 2017-12-21 | Robert Bosch Gmbh | Method for operating a processing machine |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3008074A (en) * | 1955-04-27 | 1961-11-07 | Vickers Electrical Co Ltd | Electric motor control |
US4463293A (en) * | 1982-03-25 | 1984-07-31 | Robert Bosch Gmbh | Method and apparatus for shutting off a power screwdriver |
US4650375A (en) * | 1985-12-02 | 1987-03-17 | James W. Millsap | Drill braking system |
US4858312A (en) * | 1988-04-18 | 1989-08-22 | Ideal Industries, Inc. | Torque control for automatic connector assembly tool |
US4979408A (en) * | 1988-10-12 | 1990-12-25 | Fuji Photo Film Co., Ltd. | Screw tightening device |
US5289885A (en) * | 1992-01-23 | 1994-03-01 | Makita Corporation | Tightening tool |
US5563482A (en) * | 1993-09-30 | 1996-10-08 | Black & Decker Inc. | Power tools |
US5730232A (en) * | 1996-04-10 | 1998-03-24 | Mixer; John E. | Two-speed fastener driver |
US5868208A (en) * | 1993-12-29 | 1999-02-09 | Peisert; Andreas | Power tool |
US20040211573A1 (en) * | 2003-04-24 | 2004-10-28 | Carrier David A. | Safety mechanism for a rotary hammer |
US6971454B2 (en) * | 2004-03-16 | 2005-12-06 | Bogue Edward M | Pulsed rotation screw removal and insertion device |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH463924A (en) * | 1967-09-22 | 1968-10-15 | Fischer Ag Georg | Automatically reversible drive unit for a thread cutting head |
-
2005
- 2005-12-01 DE DE102005057268A patent/DE102005057268A1/en not_active Withdrawn
-
2006
- 2006-11-14 US US11/559,680 patent/US20070125566A1/en not_active Abandoned
- 2006-11-29 GB GB0623855A patent/GB2432803B/en not_active Expired - Fee Related
- 2006-12-01 CN CNA200610163665XA patent/CN1974141A/en active Pending
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3008074A (en) * | 1955-04-27 | 1961-11-07 | Vickers Electrical Co Ltd | Electric motor control |
US4463293A (en) * | 1982-03-25 | 1984-07-31 | Robert Bosch Gmbh | Method and apparatus for shutting off a power screwdriver |
US4650375A (en) * | 1985-12-02 | 1987-03-17 | James W. Millsap | Drill braking system |
US4858312A (en) * | 1988-04-18 | 1989-08-22 | Ideal Industries, Inc. | Torque control for automatic connector assembly tool |
US4979408A (en) * | 1988-10-12 | 1990-12-25 | Fuji Photo Film Co., Ltd. | Screw tightening device |
US5289885A (en) * | 1992-01-23 | 1994-03-01 | Makita Corporation | Tightening tool |
US5563482A (en) * | 1993-09-30 | 1996-10-08 | Black & Decker Inc. | Power tools |
US5868208A (en) * | 1993-12-29 | 1999-02-09 | Peisert; Andreas | Power tool |
US5730232A (en) * | 1996-04-10 | 1998-03-24 | Mixer; John E. | Two-speed fastener driver |
US20040211573A1 (en) * | 2003-04-24 | 2004-10-28 | Carrier David A. | Safety mechanism for a rotary hammer |
US6971454B2 (en) * | 2004-03-16 | 2005-12-06 | Bogue Edward M | Pulsed rotation screw removal and insertion device |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150122520A1 (en) * | 2013-11-07 | 2015-05-07 | Apex Brands, Inc. | Tooling System with Visual Identification of Attached Component |
US9724795B2 (en) * | 2013-11-07 | 2017-08-08 | Apex Brands, Inc. | Tooling system with visual identification of attached component |
JP2017001115A (en) * | 2015-06-05 | 2017-01-05 | 株式会社マキタ | Working tool |
Also Published As
Publication number | Publication date |
---|---|
CN1974141A (en) | 2007-06-06 |
DE102005057268A1 (en) | 2007-06-06 |
GB2432803A (en) | 2007-06-06 |
GB0623855D0 (en) | 2007-01-10 |
GB2432803B (en) | 2009-06-03 |
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