CA2084270C - Cartridge type screwdriver - Google Patents

Cartridge type screwdriver

Info

Publication number
CA2084270C
CA2084270C CA002084270A CA2084270A CA2084270C CA 2084270 C CA2084270 C CA 2084270C CA 002084270 A CA002084270 A CA 002084270A CA 2084270 A CA2084270 A CA 2084270A CA 2084270 C CA2084270 C CA 2084270C
Authority
CA
Canada
Prior art keywords
handle
magazine
shaft
tool
barrel shaft
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.)
Expired - Lifetime
Application number
CA002084270A
Other languages
French (fr)
Other versions
CA2084270A1 (en
Inventor
Hermann Fruhm
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.)
Winsire Enterprises Corp
Original Assignee
Winsire Enterprises Corp
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 Winsire Enterprises Corp filed Critical Winsire Enterprises Corp
Priority to CA002084270A priority Critical patent/CA2084270C/en
Priority to TW82106522A priority patent/TW299268B/zh
Priority to EP93922871A priority patent/EP0674567B1/en
Priority to PCT/CA1993/000436 priority patent/WO1994012322A1/en
Priority to BR9307551A priority patent/BR9307551A/en
Priority to JP6512601A priority patent/JP2869678B2/en
Priority to DE69308038T priority patent/DE69308038T2/en
Priority to AT93922871T priority patent/ATE148647T1/en
Priority to KR1019950702035A priority patent/KR100291865B1/en
Priority to AU52826/93A priority patent/AU668616B2/en
Publication of CA2084270A1 publication Critical patent/CA2084270A1/en
Application granted granted Critical
Publication of CA2084270C publication Critical patent/CA2084270C/en
Priority to HK98103573A priority patent/HK1004260A1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25GHANDLES FOR HAND IMPLEMENTS
    • B25G1/00Handle constructions
    • B25G1/08Handle constructions with provision for storing tool elements
    • B25G1/085Handle constructions with provision for storing tool elements for screwdrivers, wrenches or spanners

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Pens And Brushes (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
  • Valve Device For Special Equipments (AREA)
  • Optical Head (AREA)
  • Coating Apparatus (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

A multiple bit screwdriver employs a breach loading magazine to store a plurality of bits. The magazine is enclosed inside the hollow handle of the screwdriver and is extracted along the axis of the screwdriver when the end-cap of the handle is pulled. The bits are stored in the magazine and are located about the circumference of the magazine tube that reciprocates relative to the screwdriver. When the magazine is fully extracted, the bits are easily viewed and may be individually removed from or replaced in the clips applying a simple radial force.

Description

- 1 2 0 8 ~ ~ 7 ~

CARTRID~E TYPE SCREWDRIVER

INTRODUCTION

This invention relatas to a multiple bit tool, and, more particularly, to a multiple bit tool such as a screwdriver.

BACKGROUND OF THE lNv~NllON

The use and existence of multiple bit tools are well known. Generally and in the case o~ a s~L~ iver used manually, the bits are st~red in the handle o~ the screwdriver. To retrieve a bit, the user removes the end-cap of the handle to expose the bits. One difficulty with such tools is that users have difficulty deteL in;n~
the appropriate bit without its removal. Hence, all of ' -the bits are usually emptied from the handle. ;~

Various ~ch~n;~rc have been devised to select individual bits. In U.S. Patent 4,463,788 to Corona et ~ ;~
al, a mechanism includes a rotatable disk at the anterior end of the handle in which a slot acts to guide one bit at a time from the storage chamberl or maga~ine, into the chuck.

In U.S. Patent 4,572,038 to Graham, a mechanism ~' is described in which the bits are stored in a forward magazine which rotates about a rear retractable driving shaft in order to individually engage the bits stored in the magazine.

In U.S. Patent 3,753,455 to Butler, the bits can ; '~;
be gravity fed from the storage chamber directly into the '~
chuck.

-' %~270 SUMMARY OF THE lNV~NllON

According to the invention, there is provided a screwdriver type tool comprising a chuck, a first stationary shaft extending ~rom said chuck and within a handle, a second barrel shaft longit~ n~lly movable on said first stationary shaft from a first position wherein said second barrel shaft is substantially wholly within sai~ handle to a second position wherein said second barrel shaft is substantially out~ide said handle.

BRIEF DESCRIPTION OF THE SEVER~L VIEWS OF THE DR~WINGS

Figures lA, lB and lC are side, front and end ~:. :
views, respectively, of a screwdriver according to one aspect of the present invention; :

Figures 2A, 2B and 2C are side, front and end views, respectively of a first stationary shaft used in ~ :
the tool;
s~
Figure 2D is a view taken along IID-IID o~
Figure 2A;

Figures 3A and 3B are side and end views of the .
handle of the tool of Figure 1 together with the shaft of Figure 2;

Figures 4A and 4B are views of the cap taken along 4A and 4B of Figure l;

Figures 5A is a side view of the bit magazine and barrel shaft of the tool according to the invention;

Figure 5B is a view taken along VB-VB of Figure 5A; ~.
~ '.

208~270 - 3 - :

Figure 5C is a cross-sectional view taken along ~::
VC-VC of Figurs 5A;

Figures 6A, 6B, 6C are side, right end and left 5 end views of the retaining ring of the tool according to :~ ;
the invention;

Figure 6D is a cross-sectional view taken along VID-VID of Figure 6C;
: ~:
Figures 7A and 7B are side and end views of the handle bearing of the tool according to the invention;
:
Figure 8A i6 a cross-section taken along VIIIA~
VIIIA of Figure 1;

Figure 8B is a view taken along VIIIB-VIIIB of : ' Figure 8A; and Figure 9 is a diagrammatic partially cross~
sectional view of the screwdriver according to the : ~::
invention with its handle in its extended position.

DESCRIPTION OF THE SPECIFIC EMBODIMENT
:
With reference now to the drawings, a tool, -~
conveniently a screwdriver i~ g~nerally illustrated at 10 in Figure 1. It comprises a first stationary shaft 11, an injection moulded hollow handle 12 which surrounds the circumference of one end of first stationary shaft 11, and ~, an end-cap 13 which forms an enclosure with hollow handle 12 and i~ movable relative to the handle 12 as will be explained. , ;;~

With reference now to Figure 2A, the first ;~
stationary shaft 11 includes a flat portion 14 with which 21~8~270 the injection moulded handle 12 makes contact. The firs~
stationary shaft 11 also includes a hexagonal opening or chuck 15 operable to accept a tool bit. The opposite end of first stationary shaft 11 to the chuck 15 exhibits a ~ :~
reduced diameter 16 and includes a plurality of circumferential teeth 17.

A bit storage magazine generally illustrated at 20 (Figure 5C) includes a second barrel shaft 21 with a plurality of ~utwardly extending fins 24 about its circumference, each pair of fins being operable to accept and retain a tool bit having a circumference of a si~e to ~ : .
fit in chuck 15. Second barrel shaft 21 includes a section having a narrower internal diameter or collar 22 and a concave bevel 23 at the opposite end. The internal diameter 22 is only slightly larger than the outer -~
diameter of the first stationary shaft 11 such that second barrel shaft 21 may be reciprocatecl along first stationary . "' shaft 11.
A retaining ring generally illustrated at 30 (Figure 6) is in the form of a cylinder 31 with an opening 32 operable to accept the end of first stationary .
shaft 11 and teeth 17, and a circular spring type clip 33 having a plurality of arms 35 which is operable to be inserted into and produce friction against the second ~ ;
barrel shaft 21 and to temporarily lock into bevel 23 in second barrel shaft 21 as the flexible arms 35 ~Ypiqn~
after passing over bPvel 23.
End-cap 13 (Figure 43 includes an opening 40, ~ :
opening 40 being operable to accept in a press ~it the bevel end of the second barrel shaft 21. End-cap 13 also , ~ :
includes a tapered sleeve 41 operable to be inserted into handle 12 to provide positive connection between end-cap 13 and handle 12 and to provide radial support to the :' :

~ 2 ~ 7 ~
- 5 - ~

handle opening. The ~aper in sleeve 41 eases entry of ~;
end-cap 13 into handle 12 and also facilitates alignment between said end-cap and said handle.

The handle 12 also includes a bearing cap 50 at its anterior end. The bearing cap 50 rotates on and relative to handle 12.
. ~ .
To attach the bit storage magazine 20 (Figure 5), second barrel sha~t 21 is placed over first stationary shaft ll and the magazine 20 is completely inserted into the hollow handle 12 by sliding along the circumference of the first shaft ll. With the magazine 20 in this fully inserted position within handle 12, the end portion of first stationary shaft 11 is accessible through the end of second barrel shaft 21. Retaining ring 30 is inserted into second barrel shaft 21 such that opening 32 in retaining ring 30 is slipped over the end of first ;
stationary shaft 11 until it i5 locked in place by the action of the teeth 17. Magazine 20 is then extracted from hollow handle 12 while ret~;nin~ ring 30 remains attached to first stationary shaft 11 while, as earlier ~ ~
described, spring clip 33 produces friction against the ; ~ -inside of second barrel shaft 21. The end of se¢ond barrel shaft 21 is then inserted ililtO the opening 40 of end-cap 13 and is bonded in place chemically or otherwise.
A pocket is thus formed between the second barrel shaft bevel 23 and the end-cap 13 which accepts the expansion of the spring clip 33 in its locked position.
OPERATION ~ ~;

In operation, the magazine 20 is extracted from within the hollow handle 12 by pulling the end-cap 13.
The second barrel shaft 21 travels along first statîonary sha~t 11, guided by the narrow diameter restriction or ;

r., "' ",:.,~,: ..:';'~r ~
2~2~

collar 22 at its anterior end and by the ~riction caused by spring clip 33. The magazine 20 is extracted until the narrow diameter restriction 22 in second barrel shaft 21 comes into contact with ~he anterior end of the ret~;nin~
ring 30.

In the extracted position, the plurality of pairs of fins 24 and their retained tool bits (not illustrated) are fully exposed to the user. The user may inspect the bits and select the desired one by rotating magazine 20 and applying an outward radial force to unclip -~
the bit from the fins 24. A bit no longer needed can be placed between an unused pair of fins 24 by applying an inward radial force.
The magazine 20 is then reinserted into the hollow handle 12 by pushing on end-cap 13. When the magazine 20 is within the handle 12, the spring clip 33 -will have travelled into the pocket formed between the 20 second barrel shaft bevel 23 and the end-cap orifice 40 so ~-~
as to maintain the end-cap 13 in it:s closed position. The spring clip 33 will expand within t:he pocket and lock the magazine ~0 into the closed position. -A further feature of the invention allows the end-cap 13 to be rotatable about stationary shaft 11 and relative to handle 12 when the magazine 20 is in its closed position. This me~h~n;! allows the user to apply a driving or axial ~orce with one hand and a torque to the tool with the other. To apply the driving force into the workpiece, the user places one hand on the end-cap 13 and applies a force along the axis of the tool. The torque is applied by the user grasping the screwdriver handle 12 and rotating it about the end-cap 13. Alternatively, the bearing 50 may be held and the handle 12 rotated so as to rotate the tool and bit relative to bearing 50 20~27~

While a specific embodiment of the invention has been disclosed, many modifications may readily occur to those skilled in the art to which the invention relates. :~:
Accordingly, the embodiment should be taken as illustrative of the invention only and not as limiting its scope as defined in accordance with the accompanying claims.

1 0 : ~ :

15 .~. ~

: :..,:

~,.'' ~ 30 :~

:, : .:

-~

:' ' :~

~3 ~ r~

Claims (7)

1. A screwdriver type tool comprising a chuck, a first stationary shaft extending from said chuck and within a handle, a second barrel shaft longitudinally movable on said first stationary shaft from a first position wherein said second barrel shaft is substantially wholly within said handle to a second position wherein said second barrel shaft is substantially outside said handle.
2. A tool as in claim 1 and further comprising an end-cap mounted on and movable with said second barrel shaft, said end-cap closing the end of said handle when said second barrel shaft is in said first position and opening the end of said handle when said second barrel shaft is in said second position.
3. A tool as in claim 2 and further comprising a magazine mounted on and movable with said second barrel shaft, said magazine being within said handle when said second barrel shaft is in said first position and outside said handle when said second barrel shaft is in said second position.
4. A tool as in claim 3 and further comprising a resilient clip on the end of said first shaft within said handle and a recess to accommodate said resilient clip adjacent the end of said second barrel shaft and said end-cap.
5. A tool as in claim 3 wherein said magazine has a plurality of resilient bit holders, said bit holders being mounted about the circumference of said second barrel shaft and being adapted to allow mounting and removal of a plurality of bits.
6. A tool as in claim 1 wherein said end-cap and magazine are rotatable relative to said handle.
7. A tool as in claim 6 and further including a bearing rotatable on and relative to said handle.
CA002084270A 1992-12-01 1992-12-01 Cartridge type screwdriver Expired - Lifetime CA2084270C (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
CA002084270A CA2084270C (en) 1992-12-01 1992-12-01 Cartridge type screwdriver
TW82106522A TW299268B (en) 1992-12-01 1993-08-14
AU52826/93A AU668616B2 (en) 1992-12-01 1993-10-15 Cartridge type screwdriver
BR9307551A BR9307551A (en) 1992-12-01 1993-10-15 Storage cartridge type tool
JP6512601A JP2869678B2 (en) 1992-12-01 1993-10-15 Cartridge type tool
DE69308038T DE69308038T2 (en) 1992-12-01 1993-10-15 CARTRIDGE SCREWDRIVER
EP93922871A EP0674567B1 (en) 1992-12-01 1993-10-15 Cartridge type screwdriver
KR1019950702035A KR100291865B1 (en) 1992-12-01 1993-10-15 Cartridge type screwdriver
PCT/CA1993/000436 WO1994012322A1 (en) 1992-12-01 1993-10-15 Cartridge type screwdriver
AT93922871T ATE148647T1 (en) 1992-12-01 1993-10-15 CARTRIDGE-TYPE SCREWDRIVER
HK98103573A HK1004260A1 (en) 1992-12-01 1998-04-28 Cartridge type screwdriver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002084270A CA2084270C (en) 1992-12-01 1992-12-01 Cartridge type screwdriver

Publications (2)

Publication Number Publication Date
CA2084270A1 CA2084270A1 (en) 1994-06-02
CA2084270C true CA2084270C (en) 1998-01-20

Family

ID=4150775

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002084270A Expired - Lifetime CA2084270C (en) 1992-12-01 1992-12-01 Cartridge type screwdriver

Country Status (9)

Country Link
EP (1) EP0674567B1 (en)
JP (1) JP2869678B2 (en)
KR (1) KR100291865B1 (en)
AT (1) ATE148647T1 (en)
AU (1) AU668616B2 (en)
BR (1) BR9307551A (en)
CA (1) CA2084270C (en)
DE (1) DE69308038T2 (en)
HK (1) HK1004260A1 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20305133U1 (en) * 2003-03-31 2003-06-12 Hilti Ag, Schaan Hand tool with bit reserve
DE102005007117B4 (en) * 2005-02-17 2012-02-16 Felo-Werkzeugfabrik Holland-Letz Gmbh Magazine handle for tool inserts, especially screwdriver bits
US8011277B2 (en) * 2007-05-10 2011-09-06 Wagic, Inc. Hand tool with multiple bit storage and a method for using the same
US7946203B2 (en) 2008-01-17 2011-05-24 Wagic, Inc. Tool handle for holding multiple tools of different sizes during use
US8468916B2 (en) 2008-01-17 2013-06-25 Wagic, Inc. Biaxial foldout tool with multiple tools on a side and a rotational stop
US8925429B2 (en) 2008-01-17 2015-01-06 Wagic, Inc. Radial foldout tool
US8033200B2 (en) 2008-01-17 2011-10-11 Wagic, Inc. Universal ratcheting tool
US9120208B2 (en) 2009-10-05 2015-09-01 WAGIC, Inc Handled ratcheting tool with a flip out handle
JP2011245591A (en) * 2010-05-27 2011-12-08 Kaneko Seisakusho:Kk Air-cushion driver
US9193058B2 (en) 2012-05-15 2015-11-24 Wagic, Inc. Adjustable tool handle for holding a tool during use
US10723014B2 (en) 2012-05-15 2020-07-28 Wagic, Inc. Tool holder for holding multiple tools of different sizes
US9387579B2 (en) 2012-05-15 2016-07-12 Wagic, Inc. Adjustable tool handle for holding a tool during use
DE102012107038A1 (en) 2012-08-01 2014-02-27 Wiha Werkzeuge Gmbh Screwdriver handle with a magazine for screwdriver bits
USD723276S1 (en) 2013-03-15 2015-03-03 Wagic, Inc. Post lock tool holder for L-shaped wrenches
US9193062B2 (en) 2013-03-15 2015-11-24 Wagic, Inc. Post lock tool holder for L-shaped wrenches
CN109290993A (en) * 2018-11-12 2019-02-01 广东奥能五金工具有限公司 Integral electric screwdriver
DE102019116810A1 (en) 2019-06-21 2020-12-24 Wera Werkzeuge Gmbh Screwdriver tool with magazine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB396874A (en) * 1932-04-19 1933-08-17 George Learmonth Cheffins Electricians' screw-driver
US4278119A (en) * 1980-01-07 1981-07-14 Vermont American Corporation Storage means for removable tips for hand tool
DE8706030U1 (en) * 1987-04-25 1988-08-25 Scintilla Ag, Solothurn Hand tool machine

Also Published As

Publication number Publication date
AU5282693A (en) 1994-06-22
KR100291865B1 (en) 2002-06-27
DE69308038T2 (en) 1997-11-13
JPH08505812A (en) 1996-06-25
AU668616B2 (en) 1996-05-09
HK1004260A1 (en) 1998-11-20
CA2084270A1 (en) 1994-06-02
EP0674567A1 (en) 1995-10-04
BR9307551A (en) 1999-06-01
ATE148647T1 (en) 1997-02-15
JP2869678B2 (en) 1999-03-10
EP0674567B1 (en) 1997-02-05
DE69308038D1 (en) 1997-03-20

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Legal Events

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EEER Examination request
MKEX Expiry

Effective date: 20121203