WO2007129956A1 - Portable power tool with double freewheel drive shaft lock - Google Patents

Portable power tool with double freewheel drive shaft lock Download PDF

Info

Publication number
WO2007129956A1
WO2007129956A1 PCT/SE2007/000432 SE2007000432W WO2007129956A1 WO 2007129956 A1 WO2007129956 A1 WO 2007129956A1 SE 2007000432 W SE2007000432 W SE 2007000432W WO 2007129956 A1 WO2007129956 A1 WO 2007129956A1
Authority
WO
WIPO (PCT)
Prior art keywords
drive shaft
locking
reverse
coupling
power 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.)
Ceased
Application number
PCT/SE2007/000432
Other languages
French (fr)
Inventor
Radif Nabil Khalil
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.)
Atlas Copco Industrial Technique AB
Original Assignee
Atlas Copco Tools AB
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 Atlas Copco Tools AB filed Critical Atlas Copco Tools AB
Priority to JP2009509480A priority Critical patent/JP2009536105A/en
Priority to EP07748096A priority patent/EP2015902A4/en
Priority to US12/227,049 priority patent/US20090101380A1/en
Publication of WO2007129956A1 publication Critical patent/WO2007129956A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • 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

Definitions

  • the invention relates to a portable power tool with a drive shaft connected at a driven end to a rotation motor and at a driving end to a working implement, wherein a manually operable lock means is provided to prevent rotation of the drive shaft at shifting of working implement.
  • the main object of the invention is to create a portable power tool with a rotating drive shaft where a two-way- locking of the drive shaft is accomplished with a reduced risk for unintentional activation of the lock means and without any weakening of the drive shaft .
  • Fig. 1 shows a longitudinal section through a power tool according to the invention.
  • Fig. 2 shows, on a larger scale, a fractional view of the drive shaft locking mechanism of the power tool in Fig. 1, illustrating a first locking position.
  • Fig. 3 shows the locking mechanism in Fig. 2, but illustrating a second locking position.
  • the power tool illustrated in the drawing figures is a pneumatic drilling tool which comprises a housing 10, a rotation motor 11, a reduction gearing 12, a drive shaft 13, an angle head 15, and an output shaft 14 supported in the angle head 15 and carrying a chuck 16 for attachment of a working implement.
  • the drive shaft 13 extends between the reduction gearing 12 and the angle head 15 and has a cylindrical envelope surface 17 for engagement with a rotation locking mechanism 19 and a waist portion 18.
  • a rotation locking mechanism 19 comprises a two freewheel couplings 21, 22 arranged to lock the drive shaft 13 in opposite directions of rotation.
  • the freewheel couplings consist of a "forward" locking coupling 21 and a “reverse” locking coupling 22, whereof the "forward" locking coupling 21 is able to lock the drive shaft 13 in the normal operating forward direction, whereas the "reverse” locking coupling 22 is able to lock the drive shaft 13 in the reverse direction.
  • Both drive shaft locking couplings 21, 22 are supported in a surrounding coupling sleeve 23 which is locked against rotation but axially displaceable in the housing 10 for shifting of the freewheel couplings 21, 22 between active and inactive conditions.
  • Each one of the freewheel couplings 21, 22 comprises a number of lock elements 21a, 22a arranged to co-operate with the envelope surface 17 of the drive shaft 13 and the coupling sleeve 23.
  • a ring element 24 is guidingly supported on the housing 10 for displacement between a first position A and a second position B. The ring element 24 is connected to the coupling sleeve 23 via a number of radial pins 25 extending through slots 28 in the housing 10.
  • the ring element 24 is arranged to bring along the sleeve 23 when being displaced between the first and second positions A, B to thereby shift the locking mechanism 1 ' 9 between a "forward" locking condition and a "reverse” locking condition.
  • the radial pins 25 are movably guided in the axially extending slots 28 and serve as a rotation lock means for the coupling sleeve 23 and the maneuver ring 24.
  • a spring 26 exerts a bias force on the coupling sleeve 23 towards the first position A in which the "reverse" rotation locking freewheel 22 is in its active position.
  • the operating conditions of the drive shaft 13 locking mechanism 19 illustrated in Figs. 1 and 2 are: the "reverse” rotation locking position, wherein the drive shaft 13 is locked against reverse rotation and a “forward” rotation locking position, wherein the drive shaft 13 is locked against “forward” rotation.
  • the freewheel 22 occupies its active position in which the lock elements 22a engage both the coupling sleeve 23 and the envelope surface 17 of the drive shaft 13.
  • the "forward" locking freewheel 21 occupies its inactive position wherein the lock elements 21a are located in alignment with the waist portion 18 of the drive shaft 13. This means that the lock elements 21a are out of engagement with the drive shaft 13 and unable to prevent rotation of the latter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Gripping On Spindles (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)

Abstract

A portable power tool with a rotation motor (11) drivingly connected to a working implement carrying chuck (16) via a drive shaft (13), wherein a rotation locking mechanism (19) is arranged to lock the drive shaft (13) in alternative directions via two freewheel couplings (21, 22), one 'forward' rotation locking coupling (21) and one 'reverse' rotation locking coupling (22). Both couplings (21, 22) are supported in an axially displaceable coupling sleeve (23) which is connected to an external maneuver ring element (24) on the outside of the housing (10) for shifting of the 'forward' and 'reverse' locking couplings (21, 22) between active and inactive positions, thereby accomplishing locking of the drive shaft (13) in either the 'forward' direction or the 'reverse' direction for loosening or tightening the chuck (16).

Description

Portable power hool with dmibi e freewheel drive* shaft lock.
The invention relates to a portable power tool with a drive shaft connected at a driven end to a rotation motor and at a driving end to a working implement, wherein a manually operable lock means is provided to prevent rotation of the drive shaft at shifting of working implement.
In power tools of this type, for instance drilling machines, there is a need for locking the drive shaft against rotation during exchange of working tool, because the tool chuck is always opened and closed by a spanner, and for avoiding the need for two spanners, one extra for holding the drive shaft, there is employed a drive shaft lock means . In for instance power grinders there have been used a lock means of the pawl type wherein a manually operable pawl is brought into engagement with an abutment on or aperture in the drive shaft .
There is always a risk that a lock devices of this type is unintentionally activated during full speed rotation of the tool, but in power grinders that risk is very small due to a high operation speed. The lock pawl is unable to get into engagement with the drive shaft during the extremely short time interval the aperture in the drive shaft coincides with pawl. In low speed tools, however, like drilling machines with a rotation speed of typically 1/10 of the speed of a power grinder, a locking pawl might enter an aperture in the drive shaft and cause a very abrupt and self-destructive stop to the rotating parts of the tool and also a dangerous energy transfer to the tool housing and the operator.
In the previously used pawl type drive shaft lock means there is required at least one aperture to be provided in the drive shaft which means a weakening of the drive shaft, especially in smaller size tools having small diameter drive shafts.
The main object of the invention is to create a portable power tool with a rotating drive shaft where a two-way- locking of the drive shaft is accomplished with a reduced risk for unintentional activation of the lock means and without any weakening of the drive shaft .
Further characteristic features and advantages of the invention will appear from the following specification and claims.
A preferred embodiment of the invention is described below with references to the accompanying drawing.
In the drawings
Fig. 1 shows a longitudinal section through a power tool according to the invention.
Fig. 2 shows, on a larger scale, a fractional view of the drive shaft locking mechanism of the power tool in Fig. 1, illustrating a first locking position.
Fig. 3 shows the locking mechanism in Fig. 2, but illustrating a second locking position.
The power tool illustrated in the drawing figures is a pneumatic drilling tool which comprises a housing 10, a rotation motor 11, a reduction gearing 12, a drive shaft 13, an angle head 15, and an output shaft 14 supported in the angle head 15 and carrying a chuck 16 for attachment of a working implement. The drive shaft 13 extends between the reduction gearing 12 and the angle head 15 and has a cylindrical envelope surface 17 for engagement with a rotation locking mechanism 19 and a waist portion 18.
A rotation locking mechanism 19 comprises a two freewheel couplings 21, 22 arranged to lock the drive shaft 13 in opposite directions of rotation. The freewheel couplings consist of a "forward" locking coupling 21 and a "reverse" locking coupling 22, whereof the "forward" locking coupling 21 is able to lock the drive shaft 13 in the normal operating forward direction, whereas the "reverse" locking coupling 22 is able to lock the drive shaft 13 in the reverse direction.
Both drive shaft locking couplings 21, 22 are supported in a surrounding coupling sleeve 23 which is locked against rotation but axially displaceable in the housing 10 for shifting of the freewheel couplings 21, 22 between active and inactive conditions. Each one of the freewheel couplings 21, 22 comprises a number of lock elements 21a, 22a arranged to co-operate with the envelope surface 17 of the drive shaft 13 and the coupling sleeve 23. A ring element 24 is guidingly supported on the housing 10 for displacement between a first position A and a second position B. The ring element 24 is connected to the coupling sleeve 23 via a number of radial pins 25 extending through slots 28 in the housing 10. The ring element 24 is arranged to bring along the sleeve 23 when being displaced between the first and second positions A, B to thereby shift the locking mechanism 1'9 between a "forward" locking condition and a "reverse" locking condition. The radial pins 25 are movably guided in the axially extending slots 28 and serve as a rotation lock means for the coupling sleeve 23 and the maneuver ring 24. A spring 26 exerts a bias force on the coupling sleeve 23 towards the first position A in which the "reverse" rotation locking freewheel 22 is in its active position.
The operating conditions of the drive shaft 13 locking mechanism 19 illustrated in Figs. 1 and 2 are: the "reverse" rotation locking position, wherein the drive shaft 13 is locked against reverse rotation and a "forward" rotation locking position, wherein the drive shaft 13 is locked against "forward" rotation. In the "reverse" position the freewheel 22 occupies its active position in which the lock elements 22a engage both the coupling sleeve 23 and the envelope surface 17 of the drive shaft 13. In this position of the coupling sleeve 23 the "forward" locking freewheel 21 occupies its inactive position wherein the lock elements 21a are located in alignment with the waist portion 18 of the drive shaft 13. This means that the lock elements 21a are out of engagement with the drive shaft 13 and unable to prevent rotation of the latter.
In the active condition of the "reverse" rotation locking freewheel 22 the output shaft 14 and the chuck 16 are locked against reverse rotation, which means that the chuck 16 may be easily be loosened by means of a spanner and the attached working implement may be removed.
When moving the maneuver ring 24 and the coupling sleeve 23 to the second position B, as illustrated in Fig. 3, the "forward" locking coupling 21 is brought out of alignment with the waist portion 18 and is slid onto the envelope surface 17 of the drive shaft 13, whereas the "reverse" locking coupling 22 is brought into alignment with the waist portion 18. This means that the "reverse" locking coupling 22 is deactivated, whereas the "forward" locking coupling 21 is activated with its lock elements 21a engaging the drive shaft surface 17 to lock the drive shaft 13 against forward rotation. In these positions of the couplings 21, 22 the chuck 16 is locked against "forward" rotation and may be tightened to retain a fitted working implement .

Claims

Cl a ims .
1. Portable power tool comprising a housing (10) , a rotation motor (11) , a drive shaft (13) connected at its driven end to the motor (11) and at its driving end to a working implement carrying chuck (16) , and a manually operable locking means (19) for locking the drive shaft
(13) against rotation at loosening and tightening of the chuck, c h a r a c t e r i z e d in that said locking means (19) comprises a "forward" locking freewheel coupling (21) and a "reverse" locking freewheel coupling (22) , and a maneuver means (23,24) arranged on the housing for movement between
• a first position (A) in which said "reverse" locking freewheel coupling (22) occupies an active position and said "forward" locking freewheel coupling (21) occupies an inactive position, and
• a second position (B) in which said "forward" locking freewheel coupling (21) occupies an activate position and said "reverse" locking freewheel coupling (22) occupies an inactive position, wherein a spring (26) is arranged to bias said manueuver means (23,24) towards said first position (A) .
2. Power tool according to claim 1, wherein both of said "forward" and "reverse" locking freewheel couplings (21,22) are arranged to engage the envelope surface (17) of the drive shaft (13) in their active positions, and said drive shaft (13) is formed with a waist portion (18) , wherein said "forward" and "reverse" locking freewheel couplings (21,22) are in alignment with said waist portion
(18) as they occupy their inactive positions.
3. Power tool according to claim 2 , wherein said "forward" and "reverse" locking freewheel couplings (21,22) are supported in a common coupling sleeve (23) which is rotationally locked but axially displaceable relative to the housing (10), said maneuver means (23,24) comprises a ring element (24) guidingly supported on the outside of the housing (10) and connected to said coupling sleeve (23) via slots (28) in the housing 10.
4. Power tool according to anyone of claim 1-3, wherein both of said "forward" and "reverse" locking freewheel couplings (21,22) comprise a number of lock elements (21a, 22a) for engagement with both of said coupling sleeve (23) and said drive shaft envelope surface (17), all of said lock elements (21a, 22a) having an axial extent that is less than the axial extent of said waist portion (18) .
5. Power tool according to anyone of claims 1-4, wherein said drive shaft (13) is connected to the working implement carrying chuck (16) via an angle head (15) .
PCT/SE2007/000432 2006-05-09 2007-05-07 Portable power tool with double freewheel drive shaft lock Ceased WO2007129956A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2009509480A JP2009536105A (en) 2006-05-09 2007-05-07 Portable power tool with double freewheel drive shaft lock
EP07748096A EP2015902A4 (en) 2006-05-09 2007-05-07 Portable power tool with double freewheel drive shaft lock
US12/227,049 US20090101380A1 (en) 2006-05-09 2007-05-07 Portable Power Tool with Double Freewheel Drive Shaft Lock

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0601026A SE529929C2 (en) 2006-05-09 2006-05-09 Portable tool with a freewheel lock of the drive shaft
SE0601026-8 2006-05-09

Publications (1)

Publication Number Publication Date
WO2007129956A1 true WO2007129956A1 (en) 2007-11-15

Family

ID=38667992

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2007/000432 Ceased WO2007129956A1 (en) 2006-05-09 2007-05-07 Portable power tool with double freewheel drive shaft lock

Country Status (5)

Country Link
US (1) US20090101380A1 (en)
EP (1) EP2015902A4 (en)
JP (1) JP2009536105A (en)
SE (1) SE529929C2 (en)
WO (1) WO2007129956A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE529928C2 (en) * 2006-05-09 2008-01-08 Atlas Copco Tools Ab Portable tool locking device
US9314852B2 (en) * 2011-12-15 2016-04-19 Black & Decker Inc. Right angle attachment for power tools
US9751203B2 (en) 2013-09-12 2017-09-05 Robert Bosch Tool Corporation Locking mechanism for an articulating oscillating power tool

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1438516A (en) * 1972-06-16 1976-06-09 Bosch Gmbh Robert Manual drill hammer machine memory
DE29808338U1 (en) * 1998-05-08 1998-07-30 C. & E. Fein Gmbh & Co, 70176 Stuttgart Machine tool
US6213695B1 (en) * 1998-08-28 2001-04-10 Ceka Elektrowerkzeuge Ag & Co. Kg Automatic spindle arresting device
US7048107B1 (en) * 1997-08-26 2006-05-23 Atlas Copco Electric Tools Gmbh Driving device

Family Cites Families (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2395534A (en) * 1944-05-24 1946-02-26 Lloyd W Miller Chuck
US3661473A (en) * 1969-12-22 1972-05-09 Burr Ban Tool Service Co Extension tool holder
US3758125A (en) * 1971-10-21 1973-09-11 D Cornelia Tool holding device
DE2409815A1 (en) * 1974-03-01 1975-09-11 Bosch Gmbh Robert POWER DRIVER WITH SHUT-OFF DEVICE
US4032163A (en) * 1976-01-26 1977-06-28 Holt Donald G Quick change in-motion tool chuck
US4290617A (en) * 1979-06-11 1981-09-22 The Boeing Company Motor quick-change chuck system for tool having cylindrically shaped adapter portion wherein relative longitudinal movement between chuck and tool being driven is eliminated
US4485699A (en) * 1982-08-12 1984-12-04 Fuller Kevin S Rotatable hand tool with directional drive control
DE8225992U1 (en) * 1982-09-15 1982-12-23 Kadia Diamant Maschinen- und Werkzeugfabrik O. Kopp GmbH & Co, 7440 Nürtingen DRILLING AND DEBURRING HEAD AND CLAMPING DRILLING AND DEBURRING TOOL
DE3241528C2 (en) * 1982-11-10 1986-04-10 Eugen Lutz GmbH u. Co Maschinenfabrik, 7130 Mühlacker Tool chuck for a hammer drill
US4550476A (en) * 1983-02-18 1985-11-05 Textron Inc. Adjustment means for a driver bit
US4692073A (en) * 1985-02-25 1987-09-08 Martindell J Richard Handle adapter and chuck apparatus for power bits
SE462265B (en) * 1985-05-20 1990-05-28 Agneta Danielsson PROCESSING DEVICE AND SETTING TO TAKE IT IN A SPINDLE
US4770569A (en) * 1986-09-09 1988-09-13 Nitto Kokhi Co., Ltd. Boring device
US4813829A (en) * 1988-03-22 1989-03-21 Sandvik, Inc. Tooling apparatus comprising a holder and tool head releasably mounted thereon
US5013194A (en) * 1988-09-08 1991-05-07 Wienhold James L Chuck assembly for tool bits
DE8814843U1 (en) * 1988-10-17 1989-02-02 MAS Vertriebsgesellschaft für Zerspanungstechnik mbH, 7250 Leonberg Drilling/chamfering tool
US4915555A (en) * 1989-06-07 1990-04-10 Smothers Clarence W Power drill having drill chuck tightener
US4954025A (en) * 1990-01-16 1990-09-04 Diversified Fastening Systems, Inc. Anchor set tool
DE4100412A1 (en) * 1991-01-09 1992-07-16 Bosch Gmbh Robert ELECTRIC HAND TURNING MACHINE, IN PARTICULAR HAND CIRCULAR SAW
US5110145A (en) * 1991-06-24 1992-05-05 Stewart Patrick A Power tool adaptor
US5129118A (en) * 1991-07-29 1992-07-14 Walmesley Mark W Accessory tool apparatus for use on power drills
US5222848A (en) * 1992-03-03 1993-06-29 Kuang Wu Huang Multi-functional drill and lock assembly
US5586605A (en) * 1994-02-28 1996-12-24 Helifix Ltd. Multi-wall tie apparatus
US5954463A (en) * 1994-05-02 1999-09-21 Jore; Matthew B. Reversible drill driver tool
US5464229A (en) * 1994-05-26 1995-11-07 Power Tool Holders, Inc. Quick release chuck device
US6123157A (en) * 1994-12-29 2000-09-26 Ergonomics Specialties Anti-vibration adaptor
US5662012A (en) * 1995-11-07 1997-09-02 Consolidated Devices, Inc. Torque wrench structure
US5690445A (en) * 1996-05-13 1997-11-25 Wu; Ta-Chin High-speed assembly connector structure
US6053675A (en) * 1998-06-26 2000-04-25 Black & Decker Inc. Quick-acting tool bit holder
US6457916B2 (en) * 1999-11-15 2002-10-01 Insty-Bit, Inc. Locking quick-change chuck assembly
US6561523B1 (en) * 1999-11-18 2003-05-13 James L. Wienhold Automatic tool-bit holder
AU2001245797A1 (en) * 2000-03-20 2001-10-03 Dapra Corporation Machine tool mounted marking apparatus and method
US6463834B2 (en) * 2000-10-05 2002-10-15 The Stanley Works Torque wrench
US7011661B2 (en) * 2001-03-21 2006-03-14 Medtronic, Inc. Surgical instrument with rotary cutting member and quick release coupling arrangement
DE10157831B4 (en) * 2001-11-24 2004-06-24 Robert Bosch Gmbh Hand-held machine tool with a die for receiving a tool
US7063201B2 (en) * 2001-11-27 2006-06-20 Milwaukee Electric Tool Corporation Power tool and spindle lock system
DE20119835U1 (en) * 2001-12-06 2003-04-10 Robert Bosch Gmbh, 70469 Stuttgart Hand tool with spindle stop
US6843484B2 (en) * 2002-07-08 2005-01-18 Monte L. Schroeder Quick change chuck
US6786685B2 (en) * 2002-07-19 2004-09-07 Toolovation, Llc Power tool having a quick-release chuck assembly
US6920810B1 (en) * 2002-10-31 2005-07-26 Snap-On Incorporated Method and apparatus for attaching and detaching an attachable device
SE526996C2 (en) * 2003-10-03 2005-12-06 Atlas Copco Tools Ab Power tool with angle gear and drive spindle adjustment
US7097398B2 (en) * 2003-11-14 2006-08-29 Alltrade Tools Llc Multi-functional bit & connect-disconnect coupling used therewith
SE529928C2 (en) * 2006-05-09 2008-01-08 Atlas Copco Tools Ab Portable tool locking device
US7435042B2 (en) * 2006-05-10 2008-10-14 White Christopher L Flexible and extendable drill bit assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1438516A (en) * 1972-06-16 1976-06-09 Bosch Gmbh Robert Manual drill hammer machine memory
US7048107B1 (en) * 1997-08-26 2006-05-23 Atlas Copco Electric Tools Gmbh Driving device
DE29808338U1 (en) * 1998-05-08 1998-07-30 C. & E. Fein Gmbh & Co, 70176 Stuttgart Machine tool
US6213695B1 (en) * 1998-08-28 2001-04-10 Ceka Elektrowerkzeuge Ag & Co. Kg Automatic spindle arresting device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2015902A4 *

Also Published As

Publication number Publication date
US20090101380A1 (en) 2009-04-23
JP2009536105A (en) 2009-10-08
SE0601026L (en) 2007-11-10
SE529929C2 (en) 2008-01-08
EP2015902A4 (en) 2010-10-20
EP2015902A1 (en) 2009-01-21

Similar Documents

Publication Publication Date Title
CN103379983B (en) Hand-held machine tools with reduction gear
US8136607B2 (en) Device having a torque-limiting unit
US20090126960A1 (en) Portable Power Tool with Drive Shaft Lock Means
US20090194305A1 (en) Power tool
KR20180055880A (en) A chuck having a locking device
EP1436117B1 (en) Portable power tool with rotating output shaft and overload protection
US6338404B1 (en) Locking device of power hand tool
US8397831B2 (en) Rotary tool having a manual ratchet mechanism
US7503734B2 (en) Drill chuck actuator
US20090101380A1 (en) Portable Power Tool with Double Freewheel Drive Shaft Lock
US20060185870A1 (en) Drill chuck
EP1599318B1 (en) Power tool with reverse gearing operated by external maneuver ring
CN101045259A (en) Drilling machine tool
US12233516B1 (en) Auto-reverse ratchet mechanism and method of making and using same
SE524581C2 (en) Power screwdriver with reversible transmission, comprises two planetary gears with teeth on gear rims which can engage with teeth on coupling ring

Legal Events

Date Code Title Description
DPE2 Request for preliminary examination filed before expiration of 19th month from priority date (pct application filed from 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07748096

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2007748096

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2009509480

Country of ref document: JP

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 12227049

Country of ref document: US

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)