WO2004105986A1 - Improved twin chuck drill - Google Patents

Improved twin chuck drill Download PDF

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Publication number
WO2004105986A1
WO2004105986A1 PCT/AU2004/000330 AU2004000330W WO2004105986A1 WO 2004105986 A1 WO2004105986 A1 WO 2004105986A1 AU 2004000330 W AU2004000330 W AU 2004000330W WO 2004105986 A1 WO2004105986 A1 WO 2004105986A1
Authority
WO
WIPO (PCT)
Prior art keywords
casing
drill
motor
chuck
drive
Prior art date
Application number
PCT/AU2004/000330
Other languages
French (fr)
Inventor
John Whitehead
Original Assignee
John Whitehead
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 John Whitehead filed Critical John Whitehead
Priority to AU2004242914A priority Critical patent/AU2004242914B2/en
Publication of WO2004105986A1 publication Critical patent/WO2004105986A1/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B45/00Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
    • B23B45/02Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor driven by electric power
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25FCOMBINATION 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
    • B25F3/00Associations of tools for different working operations with one portable power-drive means; Adapters therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B2260/00Details of constructional elements
    • B23B2260/062Electric motors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B2270/00Details of turning, boring or drilling machines, processes or tools not otherwise provided for
    • B23B2270/14Constructions comprising exactly two similar components

Definitions

  • THIS INVENTION relates to a drill and is more specifically concerned with a portable pistol-grip drill.
  • Pistol-grip drills are commonly pneumatically or electrically operated and have the advantage that they can be operated by using one hand. However their size and weight are limited by this requirement, and so is their power. If a large drill hole has to be formed the drill user will usually resort to a two-stage operation. First a pilot drill hole will be made and then the required drill will be replaced in the drill chuck by a thicker drill which will follow the pilot hole and enlarge it to the required size.
  • Replacing a pilot drill with a drill of larger size can be a nuisance, particularly when the user of the drill is standing on a ladder or using the drill in an overhead or otherwise awkward position.
  • Attempts have been made to overcome this problem by providing a drill with two chucks which can be loaded respectively with the, two drills required to form the desired drill hole. These two chucks may be provided at opposite ends of the drill on a drill head which can be bodily rotated about an upright axis to bring one or other of the two drills selectively to the drilling position.
  • a drill having a rotatable drill head is a rather cumbersome item of equipment to use, and this has mitigated against its widespread use.
  • An object of this invention is to provide an improved two-chuck drill.
  • a portable, pistol-grip drill has a casing provided at its front end with two openings, a drive motor inside the casing and operated from the pistol-grip, two drill chucks selectively projectable through the respective openings to positions of use in front of the drill casing, a first mechanism operable to advance a selected chuck to its position of use and to retract the other chuck inside the casing, a second mechanism for imparting rotational drive from the motor to the chuck in its position of use, first means for driving each of the two mechanisms from the drive motor, and, second means for selecting which of the chucks is to be present at its position use in front of the drill casing for enabling the drill-user to choose which of the mechanisms is to be operated.
  • the advantage of the invention is that it provides the user with the option of using two drills selectively at the front end of the drill without having to rotate a drill head or reload a drill chuck. Problems associated with providing a rotatable drill head are thus avoided.
  • the two chucks are each provided with a separate parallel drive shaft and the two drive shafts are respectively reciprocated in unison but in opposite directions by the first mechanism.
  • This may be achieved by giving each chuck drive shaft a parallel leadscrew to control its position.
  • the first mechanism suitable operates to produce a simultaneous rotation of the two leadscrews so that one retracts the associated drill chuck while the other advances its associated drill chuck towards its position of use in front of the drill.
  • a sensor inside the front of the drill casing may be used to detect when the advancing drill chuck has reached its position of use and to then allow power from the drive motor to be applied to the shaft of the chuck projecting from the casing.
  • the drive shafts of the chucks are not operable during operation of the first mechanism.
  • the drive motor is fixed in position inside the casing and has an associated epicyclic planetary gear box which is mounted on an output drive shaft of the motor.
  • Such mounting is carried out in a way that allows the motor drive shaft to be reciprocated axially of its length in the casing and through the centre of the fixed drive motor.
  • Such reciprocation maybe effected by a manual operation of the selector which conveniently takes the form of a m ⁇ muaHy-Operated button bn the rear of the drill casing ..
  • a device outside the casing which, when operated, isolates the motor output drive from the chuck drive shafts by de-activation the second mechanism, and connect the output from the motor to operate the first mechanism.
  • the rotational drive to the chucks then ceases and they can be safely interchanged at the front of the casing. This enables a larger drill carried by one 5 chuck, to be brought to the front of the casing while the second chuck carrying a pilot drill of smaller diameter, is retracted into the casing.
  • the pistol-grip drill illustrated at 1 has a casing 2 provided at its front end 3 with two openings 4 and 5. Associated with respective openings are drill chucks 6 and 7 each mounted on one end of its own drive shaft 8 and 9 and having a gear 10 and 11 at its
  • the gear 11 is larger in diameter that the gear 10.
  • the two chuck drive shafts 8 and 9 extend parallel to one another and can be reciprocated, together with their associated chucks, the casing 2 is provided with a pistol-grip 55 having a power- operating trigger 56 by operation of a first mechanism shown generally at 12 and located towards the forward end of the interior of the casing 2.
  • the mechanism 12
  • leadscrews 13 and 14 which are positionally fixed while being capable of being rotated about their longitudinal axes when their respective cogs 16 and 17 are engaged with a drive cog 18 located between their axes, as shown.
  • the leadscrews 13 and 14 pass through threaded openings in respective slide bars 19 and 20. These are guided for movement along the axes of the leadscrews in opposite directions
  • the drive cog 18 is fixed to the forward end of a motor drive shaft 30 having its forward portion of larger cross-section than its rearward portion and which is splined in a slidable manner through a rotor 50 f a motor 31 fixed to the casing.
  • the drive shaft 30 has a button 32 at its rear end which protrudes from the back of the casing. The button 32 does not participate in the rotation of the shaft 30 but can be depressed to control its axial position.
  • An electromagnet 38 retains the button 38 in its depressed position until one of two sensing switches or sensors 39 at the forward end of the casing detects one o the chucks 6 and 7 being present at its position of use in front of the casing 2.
  • the second of the motor drive shaft 30 between the motor 31 and the button 32 has 10 attached to it a planetary gearbox 33 which is fixed to the drive shaft 30 so as to participate in its axial movement, and has a pair of differently-sized and axially-spaced pinions 34 and 35 fixed to its output shaft 36.
  • Guide spindles 51 projecting in parallel rearwardly from the motor 31 pass through lugs 52 on the gearbox 33 to guide its movement.
  • a compression spring 37 is located between the opposed ends of the motor 5 31 and the planetary gearbox 33 and biases the shaft 30 and the planetary gearbox 33 resiliently towards the rear of the casing 2.
  • Slide bushes 40 and 41 attached to the motor 31 guide movement as the drive shafts 8 and 9 to ensure that they slide parallel to one another.
  • the drill illustrated operates as follows:
  • a drill bit of the required diameter to make a hole of the desired size is loaded in the chuck 7.
  • the button 32 at the back of the casing 2 is l nressed and held elertroniagneticaLly to slide the drive shaft 30 forwardly through the fixed drive motor 31 so that the cog 18 at its forward end engages with both of the cogs 16 and 17.
  • the drill operator then squeezes the power-operating trigger 56 on the drill pistol-grip 55.
  • the motor 31 rotates the drive shaft 30 and thus the cog 18 engages between the two cogs 16 and 17. These rotate their associated leadscrews 13 and 14.
  • the bars 19 and 20 then travel in opposite directions so that the drill bit together with is chuck 6 is withdrawn into the casing 2 and the other chuck 7 simultaneously travels forwards to its operating position when it projects from the front of the casing 2.
  • the trigger 56 is then released.
  • the second chuck 7 can then be loaded with a smaller diameter drill bit which is to form the pilot hole.
  • the button 32 is held in its depressed position by the electro-magnet 38 inside the casing, even after the manual pressure on it has been released, until one or other of the chucks 6, 7 is at its position of use.
  • the planetary gearbox gear 33 remains in its forward position close to the rear side of the drive motor 31 and the two pinions 34 and 35 associated with the planetary gearbox 33 are then held in positions at which they cannot be engaged by the gears 10 and 11.
  • the compression spring 37 biases the planetary gearbox 33 back to its reward position shown in the drawing.
  • the power trigger 56 on the pistol grip is then released, allowing the pinion 35 to engage the gear 11 which is then in its forward position. This also allows the cog 18 to disengage from between the two cogs 16 and 17.
  • the drive from the motor 31 is applied only to the drill chuck 7 which is now projecting from the front of the drill and has its pinion 11 in mesh with the gear 35.
  • the operator releases the power trigger 56 and presses the button 32 at the rear of the casing 2.
  • the mechanism 12 then operates when the power trigger 56 is again depressed, to retract the required drill bit back into the casing 2 and advance the other drill bit to its position of use in front of the drill so that the pilot hole can be enlarged.
  • the electro-magnet 38 is then de-energised by the sensor 39 so that the planetary gear box 33 assumes the position illustrated.
  • the drill is then again ready for use so that the required drill hole can be enlarged when the power trigger 56 is again depressed.
  • Drilling dust can be prevented from entering the openings into the front of the casing from which one of the chucks has been retracted by providing a fan impeller (not shown) inside the casing which is driven by the motor drive shaft 30 and provides a strong stream of air drawn into the casing from small apertures in its rear, the air stream blowing through the front of the casing so that its discharges forwardly through the opening associated with the retracted chuck.
  • a fan impeller (not shown) inside the casing which is driven by the motor drive shaft 30 and provides a strong stream of air drawn into the casing from small apertures in its rear, the air stream blowing through the front of the casing so that its discharges forwardly through the opening associated with the retracted chuck.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)
  • Gripping On Spindles (AREA)

Abstract

A pistol grip casing (2) contains the two chucks (6 & 7) which are selectively positionable at their positions of use in front of the casing. A drive motor (31) is selectively connectable to the chuck at its position of use by the engagement of pinions (34 & 35) with whichever of the pinions (10 & 11) is mounted on the respective drive shafts (8 & 9) of the chuck at the position of use. Selection of the chuck (6 & 7) to be at the position of use is achieved by depressing a button (32) at the back of the casing (2) to move a drive shaft (30) of the motor (31) forwardly so that the pinions (34, 35, 10 & 11) disengage and a cog (18) at the other end of the motor drive shaft (30) engages the two cogs (16, 17) for rotating two parallel leadscrews (13, 14). Simultaneous rotation of the leadscrews (13, 14) causes the chucks (6 & 7) to be interchanged at the front of the casing (2). A solenoid (38) holds the button (32) depressed until sensors (39) detect the presence of the new chuck at its forward position in front of the casing (2).

Description

IMPROVED TWIN CHUCK DRILL
Field of the Invention;
THIS INVENTION relates to a drill and is more specifically concerned with a portable pistol-grip drill.
State of the Art:
Pistol-grip drills are commonly pneumatically or electrically operated and have the advantage that they can be operated by using one hand. However their size and weight are limited by this requirement, and so is their power. If a large drill hole has to be formed the drill user will usually resort to a two-stage operation. First a pilot drill hole will be made and then the required drill will be replaced in the drill chuck by a thicker drill which will follow the pilot hole and enlarge it to the required size.
Replacing a pilot drill with a drill of larger size can be a nuisance, particularly when the user of the drill is standing on a ladder or using the drill in an overhead or otherwise awkward position. Attempts have been made to overcome this problem by providing a drill with two chucks which can be loaded respectively with the, two drills required to form the desired drill hole. These two chucks may be provided at opposite ends of the drill on a drill head which can be bodily rotated about an upright axis to bring one or other of the two drills selectively to the drilling position. A drill having a rotatable drill head is a rather cumbersome item of equipment to use, and this has mitigated against its widespread use.
Object of the Invention:
An object of this invention is to provide an improved two-chuck drill.
The Invention:
In accordance with the present invention a portable, pistol-grip drill has a casing provided at its front end with two openings, a drive motor inside the casing and operated from the pistol-grip, two drill chucks selectively projectable through the respective openings to positions of use in front of the drill casing, a first mechanism operable to advance a selected chuck to its position of use and to retract the other chuck inside the casing, a second mechanism for imparting rotational drive from the motor to the chuck in its position of use, first means for driving each of the two mechanisms from the drive motor, and, second means for selecting which of the chucks is to be present at its position use in front of the drill casing for enabling the drill-user to choose which of the mechanisms is to be operated.
Advantages of the Invention:
The advantage of the invention is that it provides the user with the option of using two drills selectively at the front end of the drill without having to rotate a drill head or reload a drill chuck. Problems associated with providing a rotatable drill head are thus avoided.
Preferred features of the Invention:
Conveniently the two chucks are each provided with a separate parallel drive shaft and the two drive shafts are respectively reciprocated in unison but in opposite directions by the first mechanism. This may be achieved by giving each chuck drive shaft a parallel leadscrew to control its position. The first mechanism suitable operates to produce a simultaneous rotation of the two leadscrews so that one retracts the associated drill chuck while the other advances its associated drill chuck towards its position of use in front of the drill. A sensor inside the front of the drill casing may be used to detect when the advancing drill chuck has reached its position of use and to then allow power from the drive motor to be applied to the shaft of the chuck projecting from the casing. Preferably the drive shafts of the chucks are not operable during operation of the first mechanism.
In a preferred arrangement of the invention the drive motor is fixed in position inside the casing and has an associated epicyclic planetary gear box which is mounted on an output drive shaft of the motor. Such mounting is carried out in a way that allows the motor drive shaft to be reciprocated axially of its length in the casing and through the centre of the fixed drive motor. Such reciprocation maybe effected by a manual operation of the selector which conveniently takes the form of a mεmuaHy-Operated button bn the rear of the drill casing .. A device outside the casing which, when operated, isolates the motor output drive from the chuck drive shafts by de-activation the second mechanism, and connect the output from the motor to operate the first mechanism. The rotational drive to the chucks then ceases and they can be safely interchanged at the front of the casing. This enables a larger drill carried by one 5 chuck, to be brought to the front of the casing while the second chuck carrying a pilot drill of smaller diameter, is retracted into the casing.
In the Drawing:
The invention will now be described in more detail, by way of example, with reference to the accompanying drawing which shows a diagrammatic side view, partly in section, 10 of a portable, electric, pistol-grip hand drill.
Description of Illustrated Preferred Embodiment:
The pistol-grip drill illustrated at 1 has a casing 2 provided at its front end 3 with two openings 4 and 5. Associated with respective openings are drill chucks 6 and 7 each mounted on one end of its own drive shaft 8 and 9 and having a gear 10 and 11 at its
15 other end. The gear 11 is larger in diameter that the gear 10. The two chuck drive shafts 8 and 9 extend parallel to one another and can be reciprocated, together with their associated chucks, the casing 2 is provided with a pistol-grip 55 having a power- operating trigger 56 by operation of a first mechanism shown generally at 12 and located towards the forward end of the interior of the casing 2. The mechanism 12
20 comprises two parallel leadscrews 13 and 14 which are positionally fixed while being capable of being rotated about their longitudinal axes when their respective cogs 16 and 17 are engaged with a drive cog 18 located between their axes, as shown. The leadscrews 13 and 14 pass through threaded openings in respective slide bars 19 and 20. These are guided for movement along the axes of the leadscrews in opposite directions
„,- respectively, by having central slide bushes 21 and 22 through which pass the respective chuck drive shafts 8 and 9. The ends of the slide bars 19 and 20 remote from the leadscrews 13 and 14 are guided for sliding movement along respective rails 23 and 24 fixed inside the casing 2. The drive cog 18 is fixed to the forward end of a motor drive shaft 30 having its forward portion of larger cross-section than its rearward portion and which is splined in a slidable manner through a rotor 50 f a motor 31 fixed to the casing. The drive shaft 30 has a button 32 at its rear end which protrudes from the back of the casing. The button 32 does not participate in the rotation of the shaft 30 but can be depressed to control its axial position. An electromagnet 38 retains the button 38 in its depressed position until one of two sensing switches or sensors 39 at the forward end of the casing detects one o the chucks 6 and 7 being present at its position of use in front of the casing 2.
The second of the motor drive shaft 30 between the motor 31 and the button 32 has 10 attached to it a planetary gearbox 33 which is fixed to the drive shaft 30 so as to participate in its axial movement, and has a pair of differently-sized and axially-spaced pinions 34 and 35 fixed to its output shaft 36. Guide spindles 51 projecting in parallel rearwardly from the motor 31 pass through lugs 52 on the gearbox 33 to guide its movement. A compression spring 37 is located between the opposed ends of the motor 5 31 and the planetary gearbox 33 and biases the shaft 30 and the planetary gearbox 33 resiliently towards the rear of the casing 2.
Slide bushes 40 and 41 attached to the motor 31 guide movement as the drive shafts 8 and 9 to ensure that they slide parallel to one another.
Operation of the Preferred Embodiment:
20 The drill illustrated operates as follows:
A drill bit of the required diameter to make a hole of the desired size is loaded in the chuck 7. The button 32 at the back of the casing 2 is lnressed and held elertroniagneticaLly to slide the drive shaft 30 forwardly through the fixed drive motor 31 so that the cog 18 at its forward end engages with both of the cogs 16 and 17. The planetary gearbox gear 33
25 participates in the forward movement of the shaft 30 as the coil spring 37 is readily compressed.
The drill operator then squeezes the power-operating trigger 56 on the drill pistol-grip 55. The motor 31 rotates the drive shaft 30 and thus the cog 18 engages between the two cogs 16 and 17. These rotate their associated leadscrews 13 and 14. The bars 19 and 20 then travel in opposite directions so that the drill bit together with is chuck 6 is withdrawn into the casing 2 and the other chuck 7 simultaneously travels forwards to its operating position when it projects from the front of the casing 2. The trigger 56 is then released. The second chuck 7 can then be loaded with a smaller diameter drill bit which is to form the pilot hole.
The button 32 is held in its depressed position by the electro-magnet 38 inside the casing, even after the manual pressure on it has been released, until one or other of the chucks 6, 7 is at its position of use. This results from the fact that the switch 39 associated with the bar 20, de-energises the electric circuit to the electro-magnet 38 only when one of the chucks is in is position of use in front of the drill. Until this occurs, the planetary gearbox gear 33 remains in its forward position close to the rear side of the drive motor 31 and the two pinions 34 and 35 associated with the planetary gearbox 33 are then held in positions at which they cannot be engaged by the gears 10 and 11. When the electro-magnet 38 is de-energised, the compression spring 37 biases the planetary gearbox 33 back to its reward position shown in the drawing. The power trigger 56 on the pistol grip is then released, allowing the pinion 35 to engage the gear 11 which is then in its forward position. This also allows the cog 18 to disengage from between the two cogs 16 and 17. When the power trigger 56 is again depressed, the drive from the motor 31 is applied only to the drill chuck 7 which is now projecting from the front of the drill and has its pinion 11 in mesh with the gear 35.
When the pilot hole has been made, the operator releases the power trigger 56 and presses the button 32 at the rear of the casing 2. The mechanism 12 then operates when the power trigger 56 is again depressed, to retract the required drill bit back into the casing 2 and advance the other drill bit to its position of use in front of the drill so that the pilot hole can be enlarged. The electro-magnet 38 is then de-energised by the sensor 39 so that the planetary gear box 33 assumes the position illustrated. The drill is then again ready for use so that the required drill hole can be enlarged when the power trigger 56 is again depressed. Drilling dust can be prevented from entering the openings into the front of the casing from which one of the chucks has been retracted by providing a fan impeller (not shown) inside the casing which is driven by the motor drive shaft 30 and provides a strong stream of air drawn into the casing from small apertures in its rear, the air stream blowing through the front of the casing so that its discharges forwardly through the opening associated with the retracted chuck.

Claims

Claims:
1. A portable, pistol-grip drill having a casing provided at its front end with two openings, a drive motor inside' the casing and operated from the pistol-grip, two drill chucks selectively projectable through the respective openings to positions of use in front of the drill, a first mechanism operable to advance a selected chuck to its position of use and to retract the other chuck inside the casing, a second mechanism for imparting rotational drive from the motor to the chuck in its position of use, first means for driving each of the two mechanisms from the motor, and second means for selecting which of the chucks is to be present at its position of use in front of the drill casing.
2. A drill as set forth in claim 1, in which the drive motor is fixed in position inside the casing and the second means which takes the form of a member manually-operable from outside the casing and which activates said first means to disconnect one of the mechanisms and connect the other mechanism to be driven by the motor.
3. A drill as set forth in claim 2, in which the member is an axially-reciprocable drive shaft extending in a slidable manner through the motor and activates said first means to transmit the motor drive to which ever of the two mechanisms is selected for operation.
4. A drill as set forth in claim 3, in which the drive shaft carries at one end a cog which, in one axial position of the drive shaft, engages with cogs of two leadscrews extending parallel to the drive shaft and rotatable to respectively retract one of the chucks into the casing while simultaneously advancing the other chuck to its position of use in front of the casing, the drive shaft carrying at its other end gearing which selectively engages gears on respective chuck-drive shafts so that in the displaced second axial position of the drive shaft whichever of the chucks is projecting from the forward end of the casing is selectively drivable by the motor drive shaft.
5. A drill as set forth in any one of the above, claims in which sensing means detects whichever of the chucks has reached its forward position of use in front of the casing and responds by disconnecting the motor drive applied to the first mechanism and applies it instead to the second mechanism.
6. A drill as set forth in claim 5, in which energisation of an electromagnet controlled by the sensing means prevents the drive being transferred to the second mechanism until the first mechanism has finished operating.
PCT/AU2004/000330 2003-05-27 2004-03-18 Improved twin chuck drill WO2004105986A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2004242914A AU2004242914B2 (en) 2003-05-27 2004-03-18 Improved twin chuck drill

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2003902603A AU2003902603A0 (en) 2003-05-27 2003-05-27 Improved twin-chuck drill
AU2003902603 2003-05-27

Publications (1)

Publication Number Publication Date
WO2004105986A1 true WO2004105986A1 (en) 2004-12-09

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ID=31953646

Family Applications (1)

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WO (1) WO2004105986A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7066692B2 (en) * 2003-01-16 2006-06-27 Kuhn Jayme K Dual chuck electrical hand drill
US7371033B2 (en) 2003-11-24 2008-05-13 Whitehot Solutions Pty Ltd Twin chuck drill with one drive shaft
EP1985414A1 (en) * 2007-04-27 2008-10-29 Ferm Corporate B.V. Tool head for an electronic tool
US7997835B2 (en) 2007-10-19 2011-08-16 Whitehot Solutions Pty. Ltd. Multiple chuck hand tool
WO2015042694A1 (en) * 2013-09-27 2015-04-02 G.B.D. Corp. Pipe sealing tool and methods for use
US20210039303A1 (en) * 2018-02-03 2021-02-11 Kocher-Plastik Maschinenbau Gmbh Device for removing plastic products
CN113510275A (en) * 2020-04-12 2021-10-19 蓝天众成环保工程有限公司 On-spot cutting device in electric power copper bar cabinet

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114953204B (en) * 2022-05-11 2024-05-07 河南新华五岳抽水蓄能发电有限公司 Vertical high-side wall excavation pre-splitting drilling accurate guiding device and guiding method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0673723A1 (en) * 1994-03-23 1995-09-27 Black & Decker Inc. Drill configuration
GB2343646A (en) * 1998-11-14 2000-05-17 Michael Burvill Power tool with multiple chucks
WO2001017728A1 (en) * 1999-09-10 2001-03-15 Cummins Richard D Turret hand drill
WO2002026453A2 (en) * 2000-09-28 2002-04-04 Steen Mandsfelt Eriksen A hand-held turret drill

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0673723A1 (en) * 1994-03-23 1995-09-27 Black & Decker Inc. Drill configuration
GB2343646A (en) * 1998-11-14 2000-05-17 Michael Burvill Power tool with multiple chucks
WO2001017728A1 (en) * 1999-09-10 2001-03-15 Cummins Richard D Turret hand drill
WO2002026453A2 (en) * 2000-09-28 2002-04-04 Steen Mandsfelt Eriksen A hand-held turret drill

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7066692B2 (en) * 2003-01-16 2006-06-27 Kuhn Jayme K Dual chuck electrical hand drill
US7371033B2 (en) 2003-11-24 2008-05-13 Whitehot Solutions Pty Ltd Twin chuck drill with one drive shaft
EP1985414A1 (en) * 2007-04-27 2008-10-29 Ferm Corporate B.V. Tool head for an electronic tool
US7997835B2 (en) 2007-10-19 2011-08-16 Whitehot Solutions Pty. Ltd. Multiple chuck hand tool
WO2015042694A1 (en) * 2013-09-27 2015-04-02 G.B.D. Corp. Pipe sealing tool and methods for use
US9475231B2 (en) 2013-09-27 2016-10-25 Omachron Intellectual Property Inc. Pipe sealing tool and methods for use
US20210039303A1 (en) * 2018-02-03 2021-02-11 Kocher-Plastik Maschinenbau Gmbh Device for removing plastic products
JP2021511983A (en) * 2018-02-03 2021-05-13 コッヒャー−プラスティック マシーネンバウ ゲゼルシャフト ミット ベシュレンクテル ハフツング Device for removing plastic products
JP7288452B2 (en) 2018-02-03 2023-06-07 コッヒャー-プラスティック マシーネンバウ ゲゼルシャフト ミット ベシュレンクテル ハフツング Device for removing plastic products
CN113510275A (en) * 2020-04-12 2021-10-19 蓝天众成环保工程有限公司 On-spot cutting device in electric power copper bar cabinet

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