GB2455609A - Pistol grip electric drills - Google Patents

Pistol grip electric drills Download PDF

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Publication number
GB2455609A
GB2455609A GB0819759A GB0819759A GB2455609A GB 2455609 A GB2455609 A GB 2455609A GB 0819759 A GB0819759 A GB 0819759A GB 0819759 A GB0819759 A GB 0819759A GB 2455609 A GB2455609 A GB 2455609A
Authority
GB
United Kingdom
Prior art keywords
handle
pistol grip
drill
electric drill
grip electric
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Withdrawn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
GB0819759A
Other versions
GB0819759D0 (en
Inventor
Neil Millward
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 GB0819759D0 publication Critical patent/GB0819759D0/en
Publication of GB2455609A publication Critical patent/GB2455609A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B35/00—Methods for boring or drilling, or for working essentially requiring the use of boring or drilling machines; Use of auxiliary equipment in connection with such methods
    • 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
    • B23B45/003—Attachments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
    • 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
    • B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
    • B25B11/002—Magnetic work holders
    • 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
    • B25B23/16—Handles
    • 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
    • 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
    • B25F5/02—Construction of casings, bodies or handles
    • B25F5/025—Construction of casings, bodies or handles with torque reaction bars for rotary tools
    • B25F5/026—Construction of casings, bodies or handles with torque reaction bars for rotary tools in the form of an auxiliary handle
    • B25F5/027—Construction of casings, bodies or handles with torque reaction bars for rotary tools in the form of an auxiliary handle with storage compartments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/08—Handle constructions with provision for storing tool elements
    • B25G1/085—Handle constructions with provision for storing tool elements for screwdrivers, wrenches or spanners

Abstract

A portable pistol grip electric drill is provided with a removable auxiliary handle 10 which contains an internal cavity. The cavity opens through one end 13 of the handle into which small metal items 4 can be inserted and held by one or more permanent magnets (15, fig 2). The magnets may be incorporated into a sleeve which may be either inserted into the handle or located about the handle.

Description

Neil Miliward
PISTOL GRIP ELECTRIC DRILLS
TECHNICAL FIELD OF THE INVENTION
This invention relates to portable pistol grip electric drills.
BACKGROUND
Using a portable electric drill commonly entails frequent changes of the bits inserted into the chuck. A common sequence is to drill a hole with one or more drill bits and then change to a screwdriver bit to insert a screw into the hole. Usually the user puts the last-used bit back in its box, in his pocket, on the floor, or wherever. When the screwdriver bit is no longer needed it is removed and stored somewhere, often in a special clip on the drill body, and the search for the right drill bit to start drilling the next hole begins. Often this sequence is repeated many times using a small number of bits.
There have been a number of proposals for temporarily holding one or more drill bits when the bit is not in use.
US 5 056 661, US 200210101311 Al, US 2004/0055917 Al and US 6 972 654 BI all disclose magnetic tool holders which can be secured to the body of a portable electric drill allowing unused bits and other ferrous P1381 metal objects to be held on the body of the drill when they are not in use.
However, all of these proposals suffer from the disadvantage that the metal objects are held in an exposed position where they could easily become dislodged during use of the drill, Furthermore, some of the devices could cause the user to hold the drill in an unusual way. In both cases the use of the tool holder could have significant safety implications for the user.
WO 01 58628 Al proposes incorporating a removable tray into the main pistol grip handle of a battery operated electric drill, allowing small metal items to be magnetically retained safely within the tray. However, it is not possible to incorporate such a tray into all kinds of drill, and it is not possible to provide such a tool holder as a retro- fit item.
Another proposal disclosed in DE 20 2004 000 749 UI relates to an unusual form of pistol grip drill which incorporates a U-shaped handle with integral front and rear limbs. The front limb has an open groove into which unused bits can be inserted and held by a permanent magnet.
Many portable electric drills are currently provided with an auxiliary handle which can be secured in front of the integral pistol grip handle to enable the user to exert more pressure while drilling and exercise greater control over movement of the drill. Some auxiliary handles can be screwed into a hole provided in the drill body, but more commonly, the handle is attached to a releasable collar which is clamped around a cylindrical boss directly behind the chuck. In some cases the handle may be used projecting laterally from the drill body, perpendicular to the main pistol grip handle, and is therefore commonly referred to as a "side handle", but in many cases the auxiliary handle is used projecting downwards substantially parallel to the pistol grip handle.
P1 381 The present invention seeks to provide a new and inventive way of holding drill bits and other small metal items when they are not being used, in such a way that the items do not interfere with the normal operation of the drill whilst still being readily accessible when they are required.
SUMMARY OF THE INVENTION
The present invention proposes a portable pistol grip electric drill provided with an auxiliary handle having a proximal end adapted to be releasably secured to the drill body, and an opposite free end, in which the auxiliary handle contains an internal cavity opening at the free end of the handle into which small ferrous metal items can be inserted, and the auxiliary handle includes one or more permanent magnets arranged to magnetically hold the said items within the cavity.
BRIEF DESCRIPTION OF THE DRAWINGS
The following description and the accompanying drawings referred to therein are included by way of non-limiting example in order to illustrate how the invention may be put into practice. In the drawings: Figure 1 is a general view of a portable pistol grip electric drill incorporating an auxiliary handle in accordance with the invention; Figure 2 is a cross section through a first embodiment of the P1381 auxiliary handle; FiQure 3 is a cross section through a second embodiment of the auxiliary handle; and Figure 4 is a cross section through a third embodiment of the auxiliary handle.
DETAILED DESCRIPTION OF THE DRAWINGS
Referring to Fig. 1, a pistol grip electric drill I includes a body 2 that contains an electric motor which turns a chuck 3 to rotate about an axis which extends longitudinally of the body 2. Drill bits 4, screw driver bits and similar tools can be held in the chuck 3, as shown. The bQdy 2 includes an integral handle 5 extending generally perpendicularly downwards from the body 1. The handle 5 typically includes a trigger 6 for controlling the operation and speed of the motor within the body 2. In the embodiment shown the drill is powered by a battery pack 7 releasably mounted at the lower end of the handle 5, but the invention could also be applied to drills of the kind which are powered via an electric cable typically extending from the bottom end of the handle. Adjacent to the chuck 3 the body 2 is provided with a boss 8 about which is mounted a collar 9 to which is secured an auxiliary handle 10. The collar 9 is radially split allowing the collar to be removed from the boss 8, but when in place the collar can be clamped to the handle by means of a clamp screw 11 or like means. The proximal end of the handle 10 adjacent to the boss 8 incorporates a projecting annular flange 12. The opposite free end 13 of the handle 10 is open, providing access to an internal cavity 14, shown in each of the cross sectional views of Flg.s 2 to 4. P1381
In the embodiment shown in Fig. 2 the handle 10 includes two circumferentially-spaced magnetic retainers 15 which are arranged to hold unused ferrous metal drill bits 4 or other small metal items within the cavity 14. Such items can easily be inserted into the handle through the end opening 13 so that the items are safely and securely held where they cannot be accidentally dislodged when the drill is in use. On the other hand, when the item is required, e.g. when changing a drill bit, the item can easily be manually removed through the opening 13.
Instead of being built into the handle 10 the permanent magnet retainers could, as shown in Fig. 3, be mounted in a sleeve 16 which is inserted into the cavity 14. Such a sleeve allows the magnetic retainers to be retro-fitted to an existing hollow handle if required. In a further embodiment shown in Fig. 4, the magnetic retainers 15 could be mounted in a sleeve 17 which is fitted over the handle 10, again allowing the permanent magnets to be retro-fitted to an existing hollow handle.
The task of locating and retrieving items from within the handle 10 may be made easier if at least part of the handle is formed of transparent material so that the items are visible through the handle, Another possibility would be to mount the magnetic retainers on a slider which can be moved out of the handle to attach or remove the items on a visible part of the slider.
Although two magnetic retainers 15 are shown by way of illustration it will be appreciated that only a single retainer, or more than two retainers, could be used if desired.
Whilst the above description places emphasis on the areas which are believed to be new and addresses specific problems which have been P1 381 identified, it is intended that the features disclosed herein may be used in any combination which is capable of providing a new and useful advance in the art.
* * * * * * * * P1381 Neil Miliward
PISTOL GRIP ELECTRIC DRILLS
TECHNICAL FIELD OF THE INVENTION
This invention relates to portable pistol grip electric drills.
BACKGROUND
Using a portable electric drill commonly entails frequent changes of the bits inserted into the chuck. A common sequence is to drill a hole with one or more drill bits and then change to a screwdriver bit to insert a screw into the hole. Usually the user puts the last-used bit back in its box, in his pocket, on the floor, or wherever. When the screwdriver bit is no longer needed it is removed and stored somewhere, often in a special clip on the drill body, and the search for the right drill bit to start drilling the next hole begins. Often this sequence is repeated many times using a small number of bits.
There have been a number of proposals for temporarily holding one or more drill bits when the bit is not in use.
US 5 056 661, US 200210101311 Al, US 2004/0055917 Al and US 6 972 654 BI all disclose magnetic tool holders which can be secured to the body of a portable electric drill allowing unused bits and other ferrous P1381 metal objects to be held on the body of the drill when they are not in use.
However, all of these proposals suffer from the disadvantage that the metal objects are held in an exposed position where they could easily become dislodged during use of the drill, Furthermore, some of the devices could cause the user to hold the drill in an unusual way. In both cases the use of the tool holder could have significant safety implications for the user.
WO 01 58628 Al proposes incorporating a removable tray into the main pistol grip handle of a battery operated electric drill, allowing small metal items to be magnetically retained safely within the tray. However, it is not possible to incorporate such a tray into all kinds of drill, and it is not possible to provide such a tool holder as a retro- fit item.
Another proposal disclosed in DE 20 2004 000 749 UI relates to an unusual form of pistol grip drill which incorporates a U-shaped handle with integral front and rear limbs. The front limb has an open groove into which unused bits can be inserted and held by a permanent magnet.
Many portable electric drills are currently provided with an auxiliary handle which can be secured in front of the integral pistol grip handle to enable the user to exert more pressure while drilling and exercise greater control over movement of the drill. Some auxiliary handles can be screwed into a hole provided in the drill body, but more commonly, the handle is attached to a releasable collar which is clamped around a cylindrical boss directly behind the chuck. In some cases the handle may be used projecting laterally from the drill body, perpendicular to the main pistol grip handle, and is therefore commonly referred to as a "side handle", but in many cases the auxiliary handle is used projecting downwards substantially parallel to the pistol grip handle.
P1 381 The present invention seeks to provide a new and inventive way of holding drill bits and other small metal items when they are not being used, in such a way that the items do not interfere with the normal operation of the drill whilst still being readily accessible when they are required.
SUMMARY OF THE INVENTION
The present invention proposes a portable pistol grip electric drill provided with an auxiliary handle having a proximal end adapted to be releasably secured to the drill body, and an opposite free end, in which the auxiliary handle contains an internal cavity opening at the free end of the handle into which small ferrous metal items can be inserted, and the auxiliary handle includes one or more permanent magnets arranged to magnetically hold the said items within the cavity.
BRIEF DESCRIPTION OF THE DRAWINGS
The following description and the accompanying drawings referred to therein are included by way of non-limiting example in order to illustrate how the invention may be put into practice. In the drawings: Figure 1 is a general view of a portable pistol grip electric drill incorporating an auxiliary handle in accordance with the invention; Figure 2 is a cross section through a first embodiment of the P1381 auxiliary handle; FiQure 3 is a cross section through a second embodiment of the auxiliary handle; and Figure 4 is a cross section through a third embodiment of the auxiliary handle.
DETAILED DESCRIPTION OF THE DRAWINGS
Referring to Fig. 1, a pistol grip electric drill I includes a body 2 that contains an electric motor which turns a chuck 3 to rotate about an axis which extends longitudinally of the body 2. Drill bits 4, screw driver bits and similar tools can be held in the chuck 3, as shown. The bQdy 2 includes an integral handle 5 extending generally perpendicularly downwards from the body 1. The handle 5 typically includes a trigger 6 for controlling the operation and speed of the motor within the body 2. In the embodiment shown the drill is powered by a battery pack 7 releasably mounted at the lower end of the handle 5, but the invention could also be applied to drills of the kind which are powered via an electric cable typically extending from the bottom end of the handle. Adjacent to the chuck 3 the body 2 is provided with a boss 8 about which is mounted a collar 9 to which is secured an auxiliary handle 10. The collar 9 is radially split allowing the collar to be removed from the boss 8, but when in place the collar can be clamped to the handle by means of a clamp screw 11 or like means. The proximal end of the handle 10 adjacent to the boss 8 incorporates a projecting annular flange 12. The opposite free end 13 of the handle 10 is open, providing access to an internal cavity 14, shown in each of the cross sectional views of Flg.s 2 to 4. P1381
In the embodiment shown in Fig. 2 the handle 10 includes two circumferentially-spaced magnetic retainers 15 which are arranged to hold unused ferrous metal drill bits 4 or other small metal items within the cavity 14. Such items can easily be inserted into the handle through the end opening 13 so that the items are safely and securely held where they cannot be accidentally dislodged when the drill is in use. On the other hand, when the item is required, e.g. when changing a drill bit, the item can easily be manually removed through the opening 13.
Instead of being built into the handle 10 the permanent magnet retainers could, as shown in Fig. 3, be mounted in a sleeve 16 which is inserted into the cavity 14. Such a sleeve allows the magnetic retainers to be retro-fitted to an existing hollow handle if required. In a further embodiment shown in Fig. 4, the magnetic retainers 15 could be mounted in a sleeve 17 which is fitted over the handle 10, again allowing the permanent magnets to be retro-fitted to an existing hollow handle.
The task of locating and retrieving items from within the handle 10 may be made easier if at least part of the handle is formed of transparent material so that the items are visible through the handle, Another possibility would be to mount the magnetic retainers on a slider which can be moved out of the handle to attach or remove the items on a visible part of the slider.
Although two magnetic retainers 15 are shown by way of illustration it will be appreciated that only a single retainer, or more than two retainers, could be used if desired.
Whilst the above description places emphasis on the areas which are believed to be new and addresses specific problems which have been P1 381 identified, it is intended that the features disclosed herein may be used in any combination which is capable of providing a new and useful advance in the art.
* * * * * * * * P1381

Claims (5)

1. A portable pistol grip electric drill provided with an auxiliary handle having a proximal end adapted to be releasably secured to the drill body, and an opposite free end, in which the auxiliary handle contains an internal cavity opening at the free end of the handle into which small ferrous metal items can be inserted, and the auxiliary handle includes one or more permanent magnets arranged to magnetically hold the said items within the cavity.
2. A portable pistol grip electric drill according to Claim I in which the permanent magnet or magnets are incorporated in a sleeve.
3. A portable pistol grip electric drill according to Claim 2 in which the sleeve is inserted into the handle.
4. A portable pistol grip electric drill according to Claim 2 in which the sleeve is located about the handle.
5. A portable pistol grip electric drill substantially as described with reference to the drawings.
* * * * * * * *
5. A portable pistol grip electric drill substantially as described with reference to the drawings.
* * * * * * * *
1. A portable pistol grip electric drill provided with an auxiliary handle having a proximal end adapted to be releasably secured to the drill body, and an opposite free end, in which the auxiliary handle contains an internal cavity opening at the free end of the handle into which small ferrous metal items can be inserted, and the auxiliary handle includes one or more permanent magnets arranged to magnetically hold the said items within the cavity.
2. A portable pistol grip electric drill according to Claim I in which the permanent magnet or magnets are incorporated in a sleeve.
3. A portable pistol grip electric drill according to Claim 2 in which the sleeve is inserted into the handle.
4. A portable pistol grip electric drill according to Claim 2 in which the sleeve is located about the handle.
GB0819759A 2007-12-13 2008-10-28 Pistol grip electric drills Withdrawn GB2455609A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0724389A GB2455562A (en) 2007-12-13 2007-12-13 Handle of portable electric drill

Publications (2)

Publication Number Publication Date
GB0819759D0 GB0819759D0 (en) 2008-12-03
GB2455609A true GB2455609A (en) 2009-06-17

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
GB0724389A Withdrawn GB2455562A (en) 2007-12-13 2007-12-13 Handle of portable electric drill
GB0819759A Withdrawn GB2455609A (en) 2007-12-13 2008-10-28 Pistol grip electric drills

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0724389A Withdrawn GB2455562A (en) 2007-12-13 2007-12-13 Handle of portable electric drill

Country Status (1)

Country Link
GB (2) GB2455562A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011129731A1 (en) * 2010-04-16 2011-10-20 Husqvarna Ab A core drilling machine and a handle assembly for a core drilling machine.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2223972A (en) * 1988-10-26 1990-04-25 Steve Lin Screw driver
US20020035901A1 (en) * 1996-07-31 2002-03-28 Wayne Anderson Multiple-in-1 precision hand tool
US20050102845A1 (en) * 2003-11-18 2005-05-19 Alterra Holdings Corporation Retention system for a hand tool combination

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5056661A (en) * 1989-04-17 1991-10-15 Alfiero Balzano Tool caddy
US6364580B1 (en) * 2000-02-10 2002-04-02 One World Technologies, Inc. Accessory tray for a hand-held power tool
US6496094B2 (en) * 2001-01-30 2002-12-17 May, Iii Otho D Magnet clamp for hand tools
US6910578B2 (en) * 2002-09-25 2005-06-28 Jonathan S. Stern Portable hand power tool accessory holder
US6972654B1 (en) * 2002-11-27 2005-12-06 Mr. Magnet, Inc. Armored magnetic base
DE202004000749U1 (en) * 2004-01-20 2004-04-08 Festool Gmbh Electrical hand tool, esp. screw driver or drill has outer retainer groove with magnetic base and rising end sections to hold bits not in use, with easy bit removal
US20070059114A1 (en) * 2005-09-07 2007-03-15 Grimes Thomas D Ii Magnetized cover for motor-driven tools

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2223972A (en) * 1988-10-26 1990-04-25 Steve Lin Screw driver
US20020035901A1 (en) * 1996-07-31 2002-03-28 Wayne Anderson Multiple-in-1 precision hand tool
US20050102845A1 (en) * 2003-11-18 2005-05-19 Alterra Holdings Corporation Retention system for a hand tool combination

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011129731A1 (en) * 2010-04-16 2011-10-20 Husqvarna Ab A core drilling machine and a handle assembly for a core drilling machine.
CN102892537A (en) * 2010-04-16 2013-01-23 胡斯华纳有限公司 A core drilling machine and a handle assembly for a core drilling machine
US9149876B2 (en) 2010-04-16 2015-10-06 Husqvarna Ab Core drilling machine and a handle assembly for a core drilling machine
CN102892537B (en) * 2010-04-16 2016-03-16 胡斯华纳有限公司 Core-drill(ing) machine and the Handleset for core-drill(ing) machine

Also Published As

Publication number Publication date
GB2455562A (en) 2009-06-17
GB0819759D0 (en) 2008-12-03
GB0724389D0 (en) 2008-01-23

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