WO2007000595A1 - Screw driver - Google Patents

Screw driver Download PDF

Info

Publication number
WO2007000595A1
WO2007000595A1 PCT/GB2006/002372 GB2006002372W WO2007000595A1 WO 2007000595 A1 WO2007000595 A1 WO 2007000595A1 GB 2006002372 W GB2006002372 W GB 2006002372W WO 2007000595 A1 WO2007000595 A1 WO 2007000595A1
Authority
WO
WIPO (PCT)
Prior art keywords
screw
formation
screw driver
head
socket
Prior art date
Application number
PCT/GB2006/002372
Other languages
French (fr)
Inventor
Philip Duffy
Original Assignee
Aquamark Holdings (Proprietary) Limited
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 Aquamark Holdings (Proprietary) Limited filed Critical Aquamark Holdings (Proprietary) Limited
Publication of WO2007000595A1 publication Critical patent/WO2007000595A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B15/00—Screwdrivers
    • B25B15/001—Screwdrivers characterised by material or shape of the tool bit
    • 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
    • B25B23/02—Arrangements for handling screws or nuts
    • B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
    • B25B23/10—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
    • B25B23/101—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means for hand-driven screw-drivers
    • 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
    • B25B23/02—Arrangements for handling screws or nuts
    • B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
    • B25B23/10—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
    • B25B23/105—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means the gripping device being an integral part of the driving bit

Definitions

  • the invention relates to a screw driver.
  • the invention in particular relates to a screw driver for holding and manipulating a screw steadily in a difficult situation for example, where the threaded screw receiving location is difficult to access, and for example where it is located within a deep recess, and especially a recess of limited lateral dimensions.
  • a conventional screw has a threaded shank, typically to be engaged within a receiving site which may already be complementarily threaded, and a head defining an engagement formation which can be engaged by a screw driver for turning the screw.
  • a conventional screw driver consists of a handle and a screw bit provided at the distal end of a shank attached to the handle, and shaped to engage with the engagement formation on the screw head, so that turning the handle enables the screw to be turned.
  • the screw bit is at the distal end of a shank, and is effective in turning the screw once it has become engaged within its complementarily threaded receiving site, but is not effective at manipulating the screw towards that initial point of engagement at the receiving site, or to start the timing of the head as it first engages.
  • secondary means typically the user's other hand, to steady the screw in position at the commencement of the driving operation is typical. Where the screw receiving site is difficult to access, for example in such a deep recess, this may not be practical.
  • a screw driver for turning a screw having a threaded shank and a head defining an engagement formation which can be engaged by the screw driver for turning the screw
  • the screw driver including: a holding formation defining a socket formation in which the head of the screw can be removably held; a screw bit projecting into' the socket formation for engaging the engagement formation of the head of the screw; and a handle formation connected to the screw bit.
  • a holding formation defining a socket formation in which the head of the screw can be removably held enables the screw to be retained and manipulated by the screw before it is engaged in a suitable receiving site, and for example enables the screw driver to be of particular use in manipulating the screw to and accurately locating it in the receiving site prior to driving it home.
  • a screw bit projects into the socket formation to engage the engagement formation of the head of screw in the usual manner, and thus enables the screw to be driven into a suitable receiving site once it has been so positioned.
  • the manipulation, positioning and driving home of the screw is performed in a single operation using a single tool which can for example be operated by a single hand.
  • the holding formation, screw bit, and handle formation may be integrally formed.
  • the socket formation may be configured and dimensioned to receive and hold the head of the screw in an interference fit.
  • the socket formation thus at least partly surrounds and engages upon a screw retained within the socket formation in interference fit.
  • the socket formation may be configured to retain a particular size of screw in a snug fit.
  • An internal gripping surface may be provided on an internal surface of the socket formation or a part thereof.
  • the socket formation, or at least an internal gripping surface where provided, may be fabricated from resiliently deformable material to effect engagement on the head of the screw in interference fit, but to allow for relatively easy release of that engagement, for example once the screw is driven into position.
  • the socket formation may be structured, for example with slots, internally fluted or tapered or otherwise structured internal surfaces or the like, to facilitate engagement via an interference fit on the head of the screw.
  • the configuration of the screw bit may be adapted to correspond to the configuration of the engagement formation of the head of the screw.
  • the screw bit may be one of a Flathead, Philipps, Pozi, Hex and Torx type screw bit.
  • the handle formation may have a suitable outer profile in cross section that defines a gripping surface that permits the handle to be gripped, and may for example have a hexagonal outer profile.
  • the invention extends to an elongate screw driver tool having a screw driver in accordance with the invention at each end thereof.
  • Figure 1 shows a schematic sectional side view of a screw driver in accordance with the invention
  • Figure 2 show a schematic perspective view of the screw driver of Figure 1;
  • Figure 3 shows a schematic sectional side view of an elongate screw driver tool in accordance with the invention having a screw driver in accordance with the invention, at each end thereof;
  • Figure 4 shows a schematic perspective view of the elongate screw driver tool of Figure 4;
  • Figure 5 shows a schematic perspective view of an alternative to the arrangement of Figure 2.
  • a screw driver in accordance with the invention, is designated generally by reference numeral 10.
  • the screw driver 10 comprises a holding formation 16 defining a socket 18, a screw bit 20 projecting into the socket 18, and a handle 22.
  • the screw driver 10 is adapted for use in turning a screw 24.
  • the screw 24 is a pan head self tapping screw which has a threaded shank 26 and a head 28 defining a Pozi type engagement formation 30.
  • the holding formation 16, screw bit 20, and handle 22 are of integrally formed plastics materials.
  • the screw bit 20 is a Pozi type screw bit.
  • the engagement formation 30 of the screw 24 is engaged by the bit 20 for turning the screw 24.
  • the handle 22 has a hexagonal outer profile in cross section that defines a gripping surface 32 that permits the handle 22 to be gripped.
  • the screw driver 10 is designed for locating and turning screws in awkward places in order to start turning the head into an object.
  • the head 28 of the screw 24 is received in the socket 18 of the screw driver 10 and held therein in an interference fit.
  • the wall of the holding formation defining the socket 18, is sufficiently thin to render it resiliently deformable, thereby permitting the wall to grip the head of the screw in the interference fit ⁇ referred to above.
  • the engagement formation 30 of the screw is engaged by the bit 20 and the screw driver 10 is turned by hand by gripping the gripping surface 32 of the handle 22.
  • the screw 24 can be further tightened with a conventional screw driver.
  • an elongate screw driver tool in accordance with the invention and having a screw driver 10, at each end thereof, is designated generally by reference numeral 12.
  • the screw driver tool 12 comprises a smaller screw driver 10.1 at one end and a larger screw driver 10.2 at the other end.
  • the socket 18 of the smaller screw driver 5 is configured and dimensioned to receive and hold the head of a No. 6 pan head self tapping screw in an interference fit.
  • the socket 18 of the larger screw driver is configured and dimensioned to receive and hold the head of a No. 8 pan head self tapping screw in an interference fit.
  • the socket entirely surrounds the screw head and is resiliently deformable to effect engagement in that it is sufficiently thin and of inherently deformable material. It will be appreciated that any other means of obtaining a suitable snug engaging grip may be employed.
  • Figure 5 illustrates a further alternative, by which the receiving socket may be 5 made resiliently deformable. The design is broadly equivalent to that of Figures 1 and 2, and where applicable like numerals are used.
  • the screw driver 10 again comprises a holding formation 16 defining a socket 18, with a screw bit 20 projecting into the socket 18, and a handle 22.
  • the screw 24 is identical.
  • the head 28 of the screw 24 is received in the socket 18 of the screw driver 10 and held therein in interference fit.
  • the interference fit is facilitated in that the resilient deformability of the socket arises at least in part in that the socket wall is provided with slots 34.
  • a deformable and/or high friction gripping surface may be provided on at least part of the internal surface of the socket.
  • the internal surface of the socket may be suitably shaped or configured, for example by tapered or fluted portions, to facilitate gripping of the screw head. In all such arrangements, the screw driver is effective in manipulating and turning screws in awkward places.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

A screw driver (10) is described suitable for turning a screw (24) having a threaded shank (26) and a head (28) defining an engagement formation which can be engaged by the screw driver for turning the screw. The screw driver includes a holding formation (16) defining a socket formation in which the head of the screw can be removably held; a screw bit (20) projecting into the socket formation for engaging the engagement formation (30) of the head of the screw; and a handle formation (22) connected to the screw bit. A screw driving tool (12) with such a screw driver at either end is also described.

Description

SCREW DRIVER
The invention relates to a screw driver.
The invention in particular relates to a screw driver for holding and manipulating a screw steadily in a difficult situation for example, where the threaded screw receiving location is difficult to access, and for example where it is located within a deep recess, and especially a recess of limited lateral dimensions.
A conventional screw has a threaded shank, typically to be engaged within a receiving site which may already be complementarily threaded, and a head defining an engagement formation which can be engaged by a screw driver for turning the screw. A conventional screw driver consists of a handle and a screw bit provided at the distal end of a shank attached to the handle, and shaped to engage with the engagement formation on the screw head, so that turning the handle enables the screw to be turned.
Where a screw is to be driven into a receiving site which is relatively inaccessible, for example being reached via a deep recess, manipulation of the screw to ensure that the threaded portion engages successfully with the threaded receiving site at the end of such a recess to begin the screw driving operation is not easy.
In a conventional screw driver, the screw bit is at the distal end of a shank, and is effective in turning the screw once it has become engaged within its complementarily threaded receiving site, but is not effective at manipulating the screw towards that initial point of engagement at the receiving site, or to start the timing of the head as it first engages. The use of secondary means, typically the user's other hand, to steady the screw in position at the commencement of the driving operation is typical. Where the screw receiving site is difficult to access, for example in such a deep recess, this may not be practical.
Solutions have been suggested that in some way fix the engaging formation to the screw bit during this initial manipulation phase, for example involving some kind of adhesive material between the screw bit and the engagement formation, or involving a magnetic screw bit. Such arrangements are not entirely satisfactory.
It is an object of the invention to mitigate some or all of the disadvantages of the above systems.
It is a particular object of the invention to provide a screw driver that assists in the manipulation of the a screw to its receiving site, as well as the turning of the screw once it is in position at the receiving site.
Thus according to the invention there is provided a screw driver for turning a screw having a threaded shank and a head defining an engagement formation which can be engaged by the screw driver for turning the screw, the screw driver including: a holding formation defining a socket formation in which the head of the screw can be removably held; a screw bit projecting into' the socket formation for engaging the engagement formation of the head of the screw; and a handle formation connected to the screw bit. The provision of a holding formation defining a socket formation in which the head of the screw can be removably held enables the screw to be retained and manipulated by the screw before it is engaged in a suitable receiving site, and for example enables the screw driver to be of particular use in manipulating the screw to and accurately locating it in the receiving site prior to driving it home. A screw bit projects into the socket formation to engage the engagement formation of the head of screw in the usual manner, and thus enables the screw to be driven into a suitable receiving site once it has been so positioned. The manipulation, positioning and driving home of the screw is performed in a single operation using a single tool which can for example be operated by a single hand. There is no need for the use of separate means, or the use of another hand, to position the screw at the receiving site prior to driving it home, and in difficult to access situations where a receiving site for the screw is, for example, at the end of a deep recess, a simple practical solution is offered.
The holding formation, screw bit, and handle formation may be integrally formed.
The socket formation may be configured and dimensioned to receive and hold the head of the screw in an interference fit. The socket formation thus at least partly surrounds and engages upon a screw retained within the socket formation in interference fit.
The socket formation may be configured to retain a particular size of screw in a snug fit. An internal gripping surface may be provided on an internal surface of the socket formation or a part thereof. The socket formation, or at least an internal gripping surface where provided, may be fabricated from resiliently deformable material to effect engagement on the head of the screw in interference fit, but to allow for relatively easy release of that engagement, for example once the screw is driven into position. Additionally or alternatively, the socket formation may be structured, for example with slots, internally fluted or tapered or otherwise structured internal surfaces or the like, to facilitate engagement via an interference fit on the head of the screw.
The configuration of the screw bit may be adapted to correspond to the configuration of the engagement formation of the head of the screw. In particular embodiments of the screw driver, the screw bit may be one of a Flathead, Philipps, Pozi, Hex and Torx type screw bit.
The handle formation may have a suitable outer profile in cross section that defines a gripping surface that permits the handle to be gripped, and may for example have a hexagonal outer profile.
The invention extends to an elongate screw driver tool having a screw driver in accordance with the invention at each end thereof.
Further features of the invention are described hereinafter by way of a non- limiting example of the invention, with reference to and as illustrated in the accompanying diagrammatic drawings. In the drawings:
Figure 1 shows a schematic sectional side view of a screw driver in accordance with the invention;
Figure 2 show a schematic perspective view of the screw driver of Figure 1; Figure 3 shows a schematic sectional side view of an elongate screw driver tool in accordance with the invention having a screw driver in accordance with the invention, at each end thereof;
Figure 4 shows a schematic perspective view of the elongate screw driver tool of Figure 4;
Figure 5 shows a schematic perspective view of an alternative to the arrangement of Figure 2.
With reference to Figure 1 and 2 of the drawings, a screw driver, in accordance with the invention, is designated generally by reference numeral 10. The screw driver 10 comprises a holding formation 16 defining a socket 18, a screw bit 20 projecting into the socket 18, and a handle 22. The screw driver 10 is adapted for use in turning a screw 24. The screw 24 is a pan head self tapping screw which has a threaded shank 26 and a head 28 defining a Pozi type engagement formation 30.
The holding formation 16, screw bit 20, and handle 22 are of integrally formed plastics materials.
The screw bit 20 is a Pozi type screw bit. The engagement formation 30 of the screw 24 is engaged by the bit 20 for turning the screw 24.
The handle 22 has a hexagonal outer profile in cross section that defines a gripping surface 32 that permits the handle 22 to be gripped.
The screw driver 10 is designed for locating and turning screws in awkward places in order to start turning the head into an object. In use, the head 28 of the screw 24 is received in the socket 18 of the screw driver 10 and held therein in an interference fit. As such, the wall of the holding formation defining the socket 18, is sufficiently thin to render it resiliently deformable, thereby permitting the wall to grip the head of the screw in the interference fit ^ referred to above. In order to screw the screw 24 into an object, the engagement formation 30 of the screw is engaged by the bit 20 and the screw driver 10 is turned by hand by gripping the gripping surface 32 of the handle 22. The screw 24 can be further tightened with a conventional screw driver.
0 With reference to Figure 3 and 4 of the drawings, an elongate screw driver tool in accordance with the invention and having a screw driver 10, at each end thereof, is designated generally by reference numeral 12. The screw driver tool 12 comprises a smaller screw driver 10.1 at one end and a larger screw driver 10.2 at the other end. The socket 18 of the smaller screw driver 5 is configured and dimensioned to receive and hold the head of a No. 6 pan head self tapping screw in an interference fit. The socket 18 of the larger screw driver is configured and dimensioned to receive and hold the head of a No. 8 pan head self tapping screw in an interference fit.
0 In the example of Figures 1 and 2, the socket entirely surrounds the screw head and is resiliently deformable to effect engagement in that it is sufficiently thin and of inherently deformable material. It will be appreciated that any other means of obtaining a suitable snug engaging grip may be employed. Figure 5 illustrates a further alternative, by which the receiving socket may be 5 made resiliently deformable. The design is broadly equivalent to that of Figures 1 and 2, and where applicable like numerals are used. The screw driver 10 again comprises a holding formation 16 defining a socket 18, with a screw bit 20 projecting into the socket 18, and a handle 22. The screw 24 is identical. As before, the head 28 of the screw 24 is received in the socket 18 of the screw driver 10 and held therein in interference fit. In this example, the interference fit is facilitated in that the resilient deformability of the socket arises at least in part in that the socket wall is provided with slots 34.
It will be understood that various other arrangements may be possible to effect or improve upon a suitable interference fit. For example, a deformable and/or high friction gripping surface may be provided on at least part of the internal surface of the socket. Additionally or alternatively, the internal surface of the socket may be suitably shaped or configured, for example by tapered or fluted portions, to facilitate gripping of the screw head. In all such arrangements, the screw driver is effective in manipulating and turning screws in awkward places.

Claims

1. A screw driver for turning a screw having a threaded shank and a head defining an engagement formation which can be engaged by the screw driver for turning the screw, the screw driver including: a holding formation defining a socket formation in which the head of the screw can be removably held; a screw bit projecting into the socket formation for engaging the engagement formation of the head of the screw; and a handle formation connected to the screw bit.
2. A screw driver in accordance with claim 1 wherein the holding formation, screw bit, and handle formation are integrally formed.
3. A screw driver in accordance with claim 1 or claim 2 wherein the socket formation is configured and dimensioned to received and hold the head of the screw in interference fit.
4. A screw driver in accordance with claim 3 wherein the socket formation at least partly surrounds and engages upon a screw retained within the socket formation in interference fit.
5. A screw driver in accordance with claim 3 or 4 wherein the socket formation is fabricated from resiliently deformable material to effect engagement on the head of a screw in interference fit.
6. A screw driver in accordance with one of claims 3 to 5 wherein the socket formation is structured with slots or internally fluted or tapered surfaces to facilitate engagement via an interference fit on the head of a screw.
7. A screw driver in accordance with any preceding claim wherein the socket is provided with an internal gripping surface to engage upon the head of a screw.
8. A screw driver in accordance with claim 7 wherein the internal gripping surface is fabricated from resiliency deformable material.
9. A screw driver in accordance with any preceding claim wherein the handle formation has a hexagonal outer profile in cross section that defines a gripping surface that permits the handle to be gripped.
10. An elongate screw driver tool having a screw driver in accordance with any preceding claim at each end thereof.
PCT/GB2006/002372 2005-06-29 2006-06-28 Screw driver WO2007000595A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA2005/05269 2005-06-29
ZA200505269 2005-06-29

Publications (1)

Publication Number Publication Date
WO2007000595A1 true WO2007000595A1 (en) 2007-01-04

Family

ID=37027565

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2006/002372 WO2007000595A1 (en) 2005-06-29 2006-06-28 Screw driver

Country Status (1)

Country Link
WO (1) WO2007000595A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2475335A (en) * 2009-11-17 2011-05-18 Dan Bramham Slotted drive tool
GB2582316A (en) * 2019-03-19 2020-09-23 William Mijalski John Turning tool for screw or bolt with a cross-slotted head
IE20210125A1 (en) * 2021-06-22 2023-01-04 Sensible Product Solutions Ltd Tool for driving M8 Bolts

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US797078A (en) * 1904-08-11 1905-08-15 Gentry Shelton Screw-driver.
GB370540A (en) * 1931-01-28 1932-04-14 Frederick Robert Bergemann Screw driver
US2015878A (en) * 1932-12-12 1935-10-01 Illinois Tool Works Coupling and driving device
US2637229A (en) * 1950-09-26 1953-05-05 Robert E Lee Tappet adjusting tool
US3178971A (en) * 1963-09-27 1965-04-20 Chicago Specialty Mfg Co Socket wrench
US3608596A (en) * 1969-05-12 1971-09-28 Donald A Yoho Safety screwdriver
FR2445197A1 (en) * 1978-12-28 1980-07-25 Amerace Corp SCREWDRIVER ACCESSORY AND USE THEREOF TO HELP A SCREWDRIVER USER
GB2208070A (en) * 1987-04-13 1989-02-22 John Thomas Brown Screwdriver
US5309799A (en) * 1993-08-05 1994-05-10 Jore Matthew B Transparent-sleeve screw holding and driving tool
DE29810986U1 (en) * 1998-06-19 1998-09-10 Stock, August, 36323 Grebenau Screw socket wrench
US6116125A (en) * 1997-04-15 2000-09-12 Mcleod; Alistair Gripping accessory
DE20117843U1 (en) * 2001-11-02 2002-01-17 Huang Hung Chen Divided tool container

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US797078A (en) * 1904-08-11 1905-08-15 Gentry Shelton Screw-driver.
GB370540A (en) * 1931-01-28 1932-04-14 Frederick Robert Bergemann Screw driver
US2015878A (en) * 1932-12-12 1935-10-01 Illinois Tool Works Coupling and driving device
US2637229A (en) * 1950-09-26 1953-05-05 Robert E Lee Tappet adjusting tool
US3178971A (en) * 1963-09-27 1965-04-20 Chicago Specialty Mfg Co Socket wrench
US3608596A (en) * 1969-05-12 1971-09-28 Donald A Yoho Safety screwdriver
FR2445197A1 (en) * 1978-12-28 1980-07-25 Amerace Corp SCREWDRIVER ACCESSORY AND USE THEREOF TO HELP A SCREWDRIVER USER
GB2208070A (en) * 1987-04-13 1989-02-22 John Thomas Brown Screwdriver
US5309799A (en) * 1993-08-05 1994-05-10 Jore Matthew B Transparent-sleeve screw holding and driving tool
US6116125A (en) * 1997-04-15 2000-09-12 Mcleod; Alistair Gripping accessory
DE29810986U1 (en) * 1998-06-19 1998-09-10 Stock, August, 36323 Grebenau Screw socket wrench
DE20117843U1 (en) * 2001-11-02 2002-01-17 Huang Hung Chen Divided tool container

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2475335A (en) * 2009-11-17 2011-05-18 Dan Bramham Slotted drive tool
GB2582316A (en) * 2019-03-19 2020-09-23 William Mijalski John Turning tool for screw or bolt with a cross-slotted head
GB2582316B (en) * 2019-03-19 2021-03-24 William Mijalski John Turning tool for screw or bolt with a cross-slotted head
IE20210125A1 (en) * 2021-06-22 2023-01-04 Sensible Product Solutions Ltd Tool for driving M8 Bolts

Similar Documents

Publication Publication Date Title
US4631985A (en) Device for holding a screw or the like
CA2172570C (en) Dual depth socket
EP2133175B1 (en) Chuck for a bit
KR100200991B1 (en) Wall anchor accomodating fasteners of varying thread diameters
EP2326463B1 (en) A combination driving tool for phillips and robertson fasteners
US7143670B2 (en) Compact auxiliary positioning driver for wrench
EP1579817A3 (en) System comprising screwdriver and bone screw
US4296656A (en) Driver bit attachment
US8733216B1 (en) Depth setter bit holder
US20150352704A1 (en) Interchangeable hand tool system
US11219987B2 (en) Tool for installation and removal of retention knobs
US5528966A (en) Combo screw driver head
WO2007000595A1 (en) Screw driver
US6405618B1 (en) Socket wrench with handle-housed drive sockets
US20070157446A1 (en) Spring nut insertion tool
US20050204875A1 (en) Anti-tamper fastener
US20150020652A1 (en) Tool Bit Having Improved Removability
US6298755B1 (en) Dimpler tool
US20070180958A1 (en) Multi-function screwdriver
US20140064872A1 (en) Replaceable Anchor
US20020157505A1 (en) Handle grip for a wrench
US20030000351A1 (en) Interference fit screw driver
US20170355068A1 (en) Screw remover tool device and method
CN216310641U (en) Knob, tightening and loosening mechanism and processing equipment
US20180092497A1 (en) Toilet seat tightening kit

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

WWW Wipo information: withdrawn in national office

Country of ref document: DE

122 Ep: pct application non-entry in european phase

Ref document number: 06764873

Country of ref document: EP

Kind code of ref document: A1