EP0068205A2 - Screw-driver with interchangeable blade - Google Patents

Screw-driver with interchangeable blade Download PDF

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Publication number
EP0068205A2
EP0068205A2 EP82105051A EP82105051A EP0068205A2 EP 0068205 A2 EP0068205 A2 EP 0068205A2 EP 82105051 A EP82105051 A EP 82105051A EP 82105051 A EP82105051 A EP 82105051A EP 0068205 A2 EP0068205 A2 EP 0068205A2
Authority
EP
European Patent Office
Prior art keywords
blade
bush
booklet
handle
annular groove
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Withdrawn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
EP82105051A
Other languages
German (de)
French (fr)
Other versions
EP0068205A3 (en
Inventor
Karl Lieser
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.)
Wera Werk Hermann Werner GmbH and Co KG
Original Assignee
Wera Werk Hermann Werner GmbH and Co KG
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 Wera Werk Hermann Werner GmbH and Co KG filed Critical Wera Werk Hermann Werner GmbH and Co KG
Publication of EP0068205A2 publication Critical patent/EP0068205A2/en
Publication of EP0068205A3 publication Critical patent/EP0068205A3/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G3/00—Attaching handles to the implements
    • B25G3/02—Socket, tang, or like fixings
    • B25G3/04—Socket, tang, or like fixings with detachable or separate socket pieces
    • 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
    • B25B15/02—Screwdrivers operated by rotating the handle
    • 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
    • B25F1/00—Combination or multi-purpose hand tools
    • B25F1/02—Combination or multi-purpose hand tools with interchangeable or adjustable tool elements

Definitions

  • the invention relates to a screwdriver with an interchangeable blade, which can be inserted from the one end in a form-fitting manner into a longitudinally non-circular opening in a cross-section which is non-circular in cross-section and which is assigned a spring for frictionally holding the blade, the opening being viewed from the inside and outside is formed polygonal sleeve, which is formed with part of its length in the booklet and with its remaining length protrudes over the end face of the booklet and which is assigned an annular groove in which the annularly shaped spring partially lies.
  • the object of the invention is based on the development of a screwdriver of this type in such a way that the production costs can be reduced while achieving an increase in stability.
  • the spring lies in an annular groove in front of the inner end face of the sleeve between the end face of the sleeve and a shoulder of the stepped entry bore of the handle and the working end of the blade is tapered relative to the diameter of the shaft.
  • the screwdriver designed in this way is characterized on the one hand by lower production costs.
  • the ring groove receiving the spring is now in the booklet itself. If this is made of plastic, the ring groove can already be taken into account when spraying. With larger quantities, this means a not insignificant saving in manufacturing costs.
  • the arrangement of the annular groove in the booklet has the advantage that the transmission element between the shaft and booklet, namely the bushing, is not weakened, so that this results in an increase in the stability of the screwdriver. Pushing the shaft equipped with blades on both sides into the handle is still permitted since the working end of the blades is tapered in relation to the diameter of the shaft. This enables trouble-free, complete insertion of the shaft into the entry hole.
  • the spring consists of a leaf spring ring with a circumferential separation point. This design proves to be very unaffected by wear, so that even after a long period of use, the secure frictional engagement is always guaranteed.
  • the leaf spring ring comes into contact with the shaft when it is inserted.
  • the screwdriver has a booklet 1.
  • the latter is preferably made of suitable plastic, so that the booklet can be produced using the plastic injection molding process.
  • a bush 2 with a cross section having a part x its length is formed in the booklet 1. The remaining length y of the sleeve 2 projects beyond the end face 3 of the booklet 1.
  • the bushing 2 contains an opening 4 with a hexagonal cross section, which is oriented such that the outer hexagonal surfaces 5 of the bushing 2 are parallel to the inner hexagonal surfaces 6 of the opening 4, see FIG. 3. From FIG. 2 it can be seen that the polygonal shape of the sleeve 2 extends only over approximately the partial length y corresponding to the projection of the sleeve 2 over the end face 3 of the booklet 1. The remaining length of the opening 4 corresponds to the length x and is designed as a cylindrical bore 7 which is larger in cross section than the inner polygon.
  • the cylindrical bore 7 of the sleeve 2 is followed by an annular groove 15 which is larger than the bore 7.
  • the latter is part of a step-shaped stepped entry bore 16 of the booklet 1, the entry bore in the end region 16 'having a hexagonal cross section such that this cross section corresponds approximately to the cross section of the hexagonal opening 4 of the sleeve 2.
  • a shoulder 17 is created through the annular groove 15 of the inlet bore 16.
  • there are two leaf spring rings 18 and 19 which are arranged one behind the other and form the spring.
  • One leaf spring ring 18 is supported with its edge R on the shoulder 17, while the other leaf spring ring 19 rests with its edge R on the end face 20 of the sleeve 2.
  • Each leaf spring ring 18, 19 has a circumferential separation point 21. As particularly illustrated in FIGS. 2 and 5, the mutually opposite edges of the separation point 21 engage in a tooth-like manner.
  • the blade 10 has a blade shaft 12 with a hexagonal cross section, which is adapted to the cross section of the hexagonal opening 4.
  • the blade shaft 12 continues at one working end in a Phillips blade 13 and at the other working end in a slotted blade 14.
  • These working ends 13, 14 of the blade 10 are designed such that they are tapered in relation to the diameter of the shaft 12. Therefore, the blade with the respective working end 13 or 14 can be inserted without problems into the bushing 2 while moving through the leaf spring rings 18, 19 into the inlet bore 16.
  • the leaf spring rings 18, 19 then expand, as illustrated in FIGS. 5 and 6, with good frictional engagement. Even when the leaf spring rings 18, 19 are widened, the toothing is not canceled, so that after the blade 10 is pulled out of the booklet 1, the leaf spring rings 18, 19 always return to their starting position.
  • Both the opening area accommodating the bush 2 and the adjoining inlet bore 16 with an annular groove 15 can be taken into account when the booklet 1 is pointed.

Abstract

A screwdriver with interchangeable blade (10) which can be positively inserted into a cross-sectionally out-of-round opening (4), in the longitudinal direction of the handle, which opening is formed by an internally and externally polygonal bush (2), of which part is moulded into the handle (1) and the remainder projects beyond the end face (3) of the handle, and which is assigned an annular groove (15) for frictionally holding the blade, in which groove the annular key partly engages. For a design which is stable in use and easy to manufacture, the key (18, 19) engages in an annular groove (15) in front of the inner end of the bush (2), between the end face (20) of the bush (2) and a shoulder (17) of the stepped inlet bore (16) of the handle, and the working end (13 or 14) of the blade (10) is tapered relative to the diameter of the shank (12). <IMAGE>

Description

Die Erfindung betrifft einen Schraubendreher mit auswechselbarer Klinge, welche von dem einen Stirnende her formschlüssig in eine im Querschnitt unrunde Öffnung, welcher eine Feder zur reibungsschlüssigen Halterung der Klinge zugeordnet ist, in Längsrichtung des Heftes gesehen einschiebbar ist, wobei die Öffnung von einer innen und außen mehrkantig gestalteten Büchse gebildet ist, welche mit einem Teil ihrer Länge in das Heft eingeformt ist und mit ihrer Restlänge über die Stirnfläche des Heftes vorsteht und welcher eine Ringnut zugeordnet ist, in welcher die ringförmig gestaltete Feder teilweise einliegt.The invention relates to a screwdriver with an interchangeable blade, which can be inserted from the one end in a form-fitting manner into a longitudinally non-circular opening in a cross-section which is non-circular in cross-section and which is assigned a spring for frictionally holding the blade, the opening being viewed from the inside and outside is formed polygonal sleeve, which is formed with part of its length in the booklet and with its remaining length protrudes over the end face of the booklet and which is assigned an annular groove in which the annularly shaped spring partially lies.

Dem Gegenstand der Erfindung liegt die Aufgabe zugrunde, einen Schraubendreher dieser Gattung dahingehend weiterzubilden, daß unter Erzielung einer Stabilitätserhöhung die Herstellungskosten senkbar sind.The object of the invention is based on the development of a screwdriver of this type in such a way that the production costs can be reduced while achieving an increase in stability.

Gelöst wird diese Aufgabe dadurch, daß die Feder in einer Ringnut vor dem inneren Stirnende der Büchse zwischen der Stirnfläche der Büchse und einer Schulter der stufenförmig abgesetzten Eintrittsbohrung des Heftes einliegt und das Arbeitsende der Klinge gegenüber dem Durchmesser des Schafts verjüngt ist.This object is achieved in that the spring lies in an annular groove in front of the inner end face of the sleeve between the end face of the sleeve and a shoulder of the stepped entry bore of the handle and the working end of the blade is tapered relative to the diameter of the shaft.

Der derart gestaltete Schraubendreher zeichnet sich zum einen durch geringere Herstellungskosten aus. Die die Feder aufnehmende Ringnut befindet sich nun im Heft selbst. Besteht dieses aus Kunststoff, so kann die Ringnut beim Spritzen bereits mitberücksichtigt werden. Bei größeren Stückzahlen bedeutet dieses eine nicht unbedeutende Einsparung von Herstellungskosten. Zum anderen bringt die Anordnung der Ringnut in dem Heft den Vorteil, daß das zwischen Schaft und Heft vorliegende Übertragungselement, nämlich die Büchse, nicht geschwächt wird, so daß hieraus eine Stabilitätserhöhung des Schraubendrehers resultiert. Das Einschieben des beidseitig mit Klingen ausgestatteten Schafts in das Heft ist weiterhin gestattet, da das Arbeitsende der Klingen gegenüber dem Durchmesser des Schafts verjüngt ist. Damit ist das störungsfreie, vollständige Einschieben des Schaftes in die Eintrittsbohrung möglich.The screwdriver designed in this way is characterized on the one hand by lower production costs. The ring groove receiving the spring is now in the booklet itself. If this is made of plastic, the ring groove can already be taken into account when spraying. With larger quantities, this means a not insignificant saving in manufacturing costs. On the other hand, the arrangement of the annular groove in the booklet has the advantage that the transmission element between the shaft and booklet, namely the bushing, is not weakened, so that this results in an increase in the stability of the screwdriver. Pushing the shaft equipped with blades on both sides into the handle is still permitted since the working end of the blades is tapered in relation to the diameter of the shaft. This enables trouble-free, complete insertion of the shaft into the entry hole.

Eine vorteilhafte Ausgestaltung besteht dabei darin, daß die Feder aus einem Blattfederring mit einer umfangseitigen Trennstelle besteht. Diese Bauform erweist sich als sehr verschleißunanfällig, so daß auch nach langer Gebrauchsdauer stets der sichere Reibungsschluß gewährleistet ist. Der Blattfederring gelangt in Kantenanlage zum Schaft, wenn dieser eingeschoben wird.An advantageous embodiment is that the spring consists of a leaf spring ring with a circumferential separation point. This design proves to be very unaffected by wear, so that even after a long period of use, the secure frictional engagement is always guaranteed. The leaf spring ring comes into contact with the shaft when it is inserted.

Um Verkantungen des Blattfederringes innerhalb der Ringnut beim Einschieben des Schafts weitgehend auszuschließen, greifen die einander gegenüberliegenden Kanten der Trennstelle verzahnungsartig ineinander ein.In order to largely prevent canting of the leaf spring ring within the ring groove when the shaft is inserted, the mutually opposite edges of the separation point engage in a tooth-like manner.

Schließlich erweist es sich noch von Vorteil, mehrere hintereinanderliegende Blattfederringe vorzusehen. Die Ringnut ist dann entsprechend der Anzahl der aufzunehmenden Blattfederringe zu verlängern. Auf diese Weise läßt sich der Reibungsschluß variieren.Finally, it proves to be advantageous to provide several leaf spring rings in series. The ring groove is then to be extended in accordance with the number of leaf spring rings to be accommodated. In this way, the frictional engagement can be varied.

Nachstehend wird ein Ausführungsbeispiel der Erfindung anhand der Fig. 1 bis 6 erläutert. Es zeigt:

  • Fig. 1 eine Ansicht eines Schraubendrehers mit eingesetzter Klinge,
  • Fig. 2 in vergrößerter Darstellung einen Längsmittelschnitt durch den Schraubendreher im Bereich der in das Heft eingesetzten Büchse, jedoch ohne Klinge,
  • Fig. 3 den Schnitt nach der Linie III-III in Fig. 2,
  • Fig. 4 den Schnitt nach der Linie Vi VI in Fig. 2,
  • Fig. 5 eine der Fig. 2 entsprechende Darstellung, wobei die Klinge eingesetzt ist und
  • Fig. 6 einen der Fig. 4 entsprechenden Schnitt, jedoch mit eingesetzter Klinge.
An exemplary embodiment of the invention is explained below with reference to FIGS. 1 to 6. It shows:
  • 1 is a view of a screwdriver with an inserted blade,
  • 2 shows an enlarged central longitudinal section through the screwdriver in the area of the sleeve inserted in the booklet, but without a blade,
  • 3 shows the section along the line III-III in FIG. 2,
  • 4 shows the section along the line VI VI in FIG. 2,
  • Fig. 5 is a representation corresponding to Fig. 2, wherein the blade is inserted and
  • Fig. 6 is a section corresponding to FIG. 4, but with the blade inserted.

Der Schraubendreher weist ein Heft 1 auf. Letzteres besteht vorzugsweise aus geeignetem Kunststoff, so daß das Heft im Kunststoffspritzverfahren hergestellt werden kann. In das Heft 1 ist eine im Querschnitt sechskantige Büchse 2 mit einem Teil x ihrer Länge eingeformt. Die Restlänge y der Büchse 2 steht über die Stirnfläche 3 des Heftes 1 vor.The screwdriver has a booklet 1. The latter is preferably made of suitable plastic, so that the booklet can be produced using the plastic injection molding process. In the booklet 1, a bush 2 with a cross section having a part x its length is formed. The remaining length y of the sleeve 2 projects beyond the end face 3 of the booklet 1.

Die Büchse 2 enthält eine im Querschnitt sechskantige Öffnung 4, die so ausgerichtet ist, daß die äußeren Sechskantflächen 5 der Büchse 2 parallel zu den inneren Sechskantflächen 6 der Öffnung 4 liegen, vergl. Fig. 3. Aus Fig. 2 ist ersichtlich, daß sich die mehrkantige Gestalt der Büchse 2 im Inneren nur über etwa die dem Überstand der Büchse 2 über die Stirnfläche 3 des Heftes 1 entsprechende Teillänge y erstreckt. Die Restlänge der Öffnung 4 entspricht der Länge x und ist als gegenüber dem Innenmehrkant querschnittsgrößere zylindrische Bohrung 7 ausgebildet.The bushing 2 contains an opening 4 with a hexagonal cross section, which is oriented such that the outer hexagonal surfaces 5 of the bushing 2 are parallel to the inner hexagonal surfaces 6 of the opening 4, see FIG. 3. From FIG. 2 it can be seen that the polygonal shape of the sleeve 2 extends only over approximately the partial length y corresponding to the projection of the sleeve 2 over the end face 3 of the booklet 1. The remaining length of the opening 4 corresponds to the length x and is designed as a cylindrical bore 7 which is larger in cross section than the inner polygon.

An die zylindrische Bohrung 7 der Büchse 2 schließt sich eine gegenüber der Bohrung 7 querschnittsgrößere Ringnut 15 an. Letztere ist Teil einer stufenförmig abgesetzten Eintrittsbohrung 16 des Heftes 1, welche Eintrittsbohrung im Endbereich 16' im Querschnitt sechskantförmig gestaltet ist derart, daß dieser Querschnitt in etwa dem Querschnitt der sechskantigen Öffnung 4 der Büchse 2 entspricht. Durch die Ringnut 15 der Eintrittsbohrung 16 ist eine Schulter 17 geschaffen. In der Ringnut 15 liegen mit Spiel zwei hintereinander angeordnete, die Feder bildende Blattfederringe 18 und 19 ein. Der eine Blattfederring 18 stützt sich mit seinem Rand R an der Schulter 17 ab, während der andere Blattfederring 19 mit seinem Rand R auf der Stirnfläche 20 der Büchse 2 aufliegt.The cylindrical bore 7 of the sleeve 2 is followed by an annular groove 15 which is larger than the bore 7. The latter is part of a step-shaped stepped entry bore 16 of the booklet 1, the entry bore in the end region 16 'having a hexagonal cross section such that this cross section corresponds approximately to the cross section of the hexagonal opening 4 of the sleeve 2. A shoulder 17 is created through the annular groove 15 of the inlet bore 16. In the annular groove 15 there are two leaf spring rings 18 and 19 which are arranged one behind the other and form the spring. One leaf spring ring 18 is supported with its edge R on the shoulder 17, while the other leaf spring ring 19 rests with its edge R on the end face 20 of the sleeve 2.

Jeder Blattfederring 18,19 weist eine umfangseitige Trennstelle 21 auf. Wie insbesondere Fig. 2 und 5 es veranschaulichen, greifen die einander gegenüberliegenden Kanten der Trennstelle 21 verzahnungsartig ineinander ein.Each leaf spring ring 18, 19 has a circumferential separation point 21. As particularly illustrated in FIGS. 2 and 5, the mutually opposite edges of the separation point 21 engage in a tooth-like manner.

Die Klinge 10 besitzt einen im Querschnitt sechskantigen Klingen-Schaft 12, der dem Querschnitt der sechskantigen Öffnung 4 angepaßt ist. Beim Ausführungsbeispiel setzt sich der Klingenschaft 12 an dem einen Arbeitsende in eine Kreuzschlitzklinge 13 und an dem anderen Arbeitsende in eine Schlitzklinge 14 fort. Diese Arbeitsenden 13,14 der Klinge 10 sind so beschaffen, daß sie gegenüber dem Durchmesser des Schafts 12 verjüngt sind. Daher kann die Klinge mit dem jeweiligen Arbeitsende 13 bzw. 14 störungsfrei in die Büchse 2 unter Durchwanderung der Blattfederringe 18,19 in die Eintrittsbohrung 16 eingesteckt werden. Durch die Kanten des Schaftes 12 erfahren dann die Blattfederringe 18,19 eine Aufweitung, wie es die Fig. 5 und 6 veranschaulichen unter Erzielung eines guten Reibungsschlusses. Auch bei aufgeweiteten Blattfederringen 18,19 ist die Verzahnung nicht aufgehoben, so daß nach Herausziehen der Klinge 10 aus dem Heft 1 die Blattfederringe 18,19 stets in ihre Ausgangsstellung zurückkehren.The blade 10 has a blade shaft 12 with a hexagonal cross section, which is adapted to the cross section of the hexagonal opening 4. In the exemplary embodiment, the blade shaft 12 continues at one working end in a Phillips blade 13 and at the other working end in a slotted blade 14. These working ends 13, 14 of the blade 10 are designed such that they are tapered in relation to the diameter of the shaft 12. Therefore, the blade with the respective working end 13 or 14 can be inserted without problems into the bushing 2 while moving through the leaf spring rings 18, 19 into the inlet bore 16. Through the edges of the shaft 12, the leaf spring rings 18, 19 then expand, as illustrated in FIGS. 5 and 6, with good frictional engagement. Even when the leaf spring rings 18, 19 are widened, the toothing is not canceled, so that after the blade 10 is pulled out of the booklet 1, the leaf spring rings 18, 19 always return to their starting position.

Sowohl der die Büchse 2 aufnehmende Öffnungsbereich als auch die sich daran anschließende Eintrittsbohrung 16 mit Ringnut 15 können beim Spitzvorgang des Heftes 1 mitberücksichtigt werden.Both the opening area accommodating the bush 2 and the adjoining inlet bore 16 with an annular groove 15 can be taken into account when the booklet 1 is pointed.

Sollen größere Drehmomente auf die Klinge 10 übertragen werden, so kann dieses unter Zuhilfenahme einer Zange oder eines Schraubenschlüssels geschehen, welche am Überstand 2' der Büchse 2 angreifen. In diesem Falle treten am Heft 1 nur geringfügige Kräfte auf, da der Kraftfluß von der Büchse 2 unmittelbar in den Klingenschaft 12 geleitet wird.If larger torques are to be transmitted to the blade 10, this can be done with the aid of pliers or a wrench, which act on the projection 2 'of the sleeve 2. In this case, only slight forces occur on the booklet 1, since the force flow from the bush 2 is conducted directly into the blade shaft 12.

Alle in der Beschreibung und in der Zeichnung dargestellten neuen Merkmale sind erfindungswesentlich, auch soweit sie in den Ansprüchen nicht ausdrücklich beansprucht sind.All new features shown in the description and in the drawing are essential to the invention, even if they are not expressly claimed in the claims.

Claims (4)

1.Schraubendreher mit auswechselbarer Klinge, welche von dem einen Stirnende her formschlüssig in eine im Querschnitt unrunde Öffnung, welcher eine Feder zur reibungsschlüssigen Halterung der Klinge zugeordnet ist, in Längsrichtung des Heftes gesehen einschiebbar ist, wobei die Öffnung von einer innen und außen mehrkantig gestalteten Büchse gebildet ist, welche mit einem Teil ihrer Länge in das Heft eingeformt ist und mit ihrer Restlänge über die Stirnfläche des Heftes vorsteht und welcher eine Ringnut zugeordnet ist, in welcher die ringförmig gestaltete Feder teilweise einliegt, dadurch gekennzeichnet, daß die Feder (18,19) in einer Ringnut (15) vor dem inneren Stirnende der Büchse (2) zwischen der Stirnfläche (20) der Büchse (2) und einer Schulter (17) der stufenförmig abgesetzten Eintrittsbohrung (16) des Heftes einliegt und das Arbeitsende (13 bzw. 14) der Klinge (10) gegenüber dem Durchmesser des Schafts (12) verjüngt ist.1.Screwdriver with interchangeable blade, which can be inserted from one end into a non-circular cross-section opening, to which a spring for frictionally holding the blade is assigned, seen in the longitudinal direction of the handle, the opening being polygonal on the inside and outside Bush is formed, which is formed with part of its length in the booklet and with its remaining length protrudes beyond the end face of the booklet and which is assigned an annular groove in which the ring-shaped spring partially lies, characterized in that the spring (18, 19) in an annular groove (15) in front of the inner end of the bush (2) between the end face (20) of the bush (2) and a shoulder (17) of the stepped entry bore (16) of the booklet and the working end (13 or 14) the blade (10) is tapered with respect to the diameter of the shaft (12). 2.Schraubendreher nach Anspruch 1, dadurch gekennzeichnet, daß die Feder aus einem Blattfederring (18,19) mit einer umfangseitigen Trennstelle (21) besteht.2. Screwdriver according to claim 1, characterized in that the spring consists of a leaf spring ring (18,19) with a peripheral separation point (21). 3.Schraubendreher nach Anspruch 2, dadurch gekennzeichnet, daß die einander gegenüberliegenden Kanten der Trennstelle (21) verzahnungsartig ineinandergreifen.3. Screwdriver according to claim 2, characterized in that the mutually opposite edges of the separation point (21) interlock like a tooth. 4. Schraubendreher nach Anspruch 1, gekennzeichnet durch mehrere hintereinanderliegende Blattfederringe (18,19).4. Screwdriver according to claim 1, characterized by a plurality of leaf spring rings (18, 19) one behind the other.
EP82105051A 1981-06-19 1982-06-09 Screw-driver with interchangeable blade Withdrawn EP0068205A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3124026 1981-06-19
DE19813124026 DE3124026A1 (en) 1981-06-19 1981-06-19 SCREWDRIVER WITH INTERCHANGEABLE BLADE

Publications (2)

Publication Number Publication Date
EP0068205A2 true EP0068205A2 (en) 1983-01-05
EP0068205A3 EP0068205A3 (en) 1984-05-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP82105051A Withdrawn EP0068205A3 (en) 1981-06-19 1982-06-09 Screw-driver with interchangeable blade

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EP (1) EP0068205A3 (en)
JP (1) JPS5851081A (en)
DE (1) DE3124026A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996030167A1 (en) * 1995-03-31 1996-10-03 Strauch, Martin Screwdriver with a sheathed shaft

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3539502C1 (en) * 1985-11-07 1987-02-05 Leibinger Oswald Gmbh Screwdrivers, in particular for surgical purposes

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1961246A (en) * 1932-04-29 1934-06-05 Timothy B Powers Screw driver
FR881205A (en) * 1942-04-14 1943-04-19 Les Fils De Peugeot Freres Reversible blade screwdriver
US2596594A (en) * 1950-10-11 1952-05-13 Park Metalware Company Inc Chuck feature of tools of the detachably connected shank and handle type
US4096896A (en) * 1977-04-29 1978-06-27 Upson Tools, Inc. Composite tool structure
EP0039387A1 (en) * 1980-05-02 1981-11-11 Wera-Werk Hermann Werner GmbH &amp; Co. Screw driver with an exchangeable shank

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1961246A (en) * 1932-04-29 1934-06-05 Timothy B Powers Screw driver
FR881205A (en) * 1942-04-14 1943-04-19 Les Fils De Peugeot Freres Reversible blade screwdriver
US2596594A (en) * 1950-10-11 1952-05-13 Park Metalware Company Inc Chuck feature of tools of the detachably connected shank and handle type
US4096896A (en) * 1977-04-29 1978-06-27 Upson Tools, Inc. Composite tool structure
EP0039387A1 (en) * 1980-05-02 1981-11-11 Wera-Werk Hermann Werner GmbH &amp; Co. Screw driver with an exchangeable shank

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996030167A1 (en) * 1995-03-31 1996-10-03 Strauch, Martin Screwdriver with a sheathed shaft

Also Published As

Publication number Publication date
DE3124026A1 (en) 1982-12-30
EP0068205A3 (en) 1984-05-16
JPS5851081A (en) 1983-03-25

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