EP0675783A1 - Outil, notamment embout de tournevis - Google Patents

Outil, notamment embout de tournevis

Info

Publication number
EP0675783A1
EP0675783A1 EP94903861A EP94903861A EP0675783A1 EP 0675783 A1 EP0675783 A1 EP 0675783A1 EP 94903861 A EP94903861 A EP 94903861A EP 94903861 A EP94903861 A EP 94903861A EP 0675783 A1 EP0675783 A1 EP 0675783A1
Authority
EP
European Patent Office
Prior art keywords
screwdriver
tool
structured
contacting
torque transmitting
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Withdrawn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
EP94903861A
Other languages
German (de)
English (en)
Inventor
Martin Strauch
Robert Hoy
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
Priority claimed from DE4300446A external-priority patent/DE4300446C2/de
Application filed by Wera Werk Hermann Werner GmbH and Co KG filed Critical Wera Werk Hermann Werner GmbH and Co KG
Publication of EP0675783A1 publication Critical patent/EP0675783A1/fr
Withdrawn legal-status Critical Current

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
    • B25B15/002—Screwdrivers characterised by material or shape of the tool bit characterised by material used or surface finishing
    • 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
    • B25B15/004—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section
    • B25B15/005—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section with cross- or star-shaped cross-section

Definitions

  • the invention relates to a tool with structured
  • 00022 tool e.g. of the screwdriver. 00023
  • the object of the present invention is to avoid
  • the subclaim represents a vortej.l .f -. *.
  • 00034 aimed for fine structure of the work surface as one from the
  • 00062 abrasive coating has the same roughness values 00063 (RMS) - also from the roughness of the mold wall of the sinter
  • the side surface of the tip is, for example, 00070 se also corrugated crosswise, so that diamond-shaped pla-
  • 00077 by shaping an embossing, rolling or similar 00078 forming tool. It can also be a press
  • 00080 should be on the tool tip, more precisely on the work
  • 00083 preferably the shape of a dome or the shape of a
  • 00086 is preferably square. The distance between the knobs should
  • the knob can preferably be round. But it is
  • 00091 is assigned to a dratic or rectangular plateau
  • 00093 corresponds to the knobs.
  • the height of the knobs i.e. the
  • 00095 gen should be less than the radius of a knob-
  • Figure 3 is a view against the hexagonal shaft end
  • FIG. 5 a screwdriver blade with a nubbed point
  • Fig. 8 is an enlarged detail of the knobbed
  • FIG. 9 shows a representation according to FIG. 8 of a second one
  • Fig.11 is a section along the line XI-XI in Fig. 10. 00149
  • the bit consists of the hexagonal shaft section 1,
  • the entire screwdriver insert is designed as a molded part 00160, made of sintered powder metal.
  • 00161 grain size of the powder metal is approximately between 10 to
  • 00189 has a plastic component in a particular
  • the mass can be at a temperature of 150 to
  • the green compacts can be dipped in a solvent
  • the temperature can be reduced to the sintering temperature
  • 00205 can be evacuated.
  • FIGS. 5-11 show a screwdriver in which
  • the knobs 10 have an essentially
  • knobs can be lenticular or dome-shaped. 00217
  • 00219 is preferably in a range of 0.1-0.3 mm.
  • 00220 can also be in a range of 0.15 - 0.3 mm
  • the nub width can be between 0.2 and
  • 00223 vary 0.4 mm and preferably varies in a range
  • knobs 10 can over it
  • knobs are not on plateaus
  • knobs is 0.17 mm here. Here too the knobs have
  • the grid is 00243 around a grid with a square network shape
  • knobs are arranged on the corner points of the grid -
  • the grid is opposite the baseline or the vertical
  • the height H is also here
  • 00249 tool tip 13 is about a 2.8 mm long
  • knobs have a different shape
  • 00253 have, for example, a dome shape. You can
  • 00254 in particular be lenticular, that is a

Landscapes

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

Abstract

L'invention concerne un outil comportant des surfaces d'usinage structurées transmettant un couple par contact avec une pièce, notamment un embout de tournevis. Afin de pouvoir réaliser un outil ayant une surface de travail optimalement adaptée au but d'utilisation, l'invention prévoit que l'outil se présente soit sous la forme d'une pièce moulée frittée en métal pulvérisé de manière à ce que la rugosité résultant de la grosseur de grain de la poudre de métal constitue la surface de travail structurée optimalement pour transmettre le couple, soit qu'il comporte une surface munie de protubérances formées par laminage.
EP94903861A 1992-12-22 1993-12-22 Outil, notamment embout de tournevis Withdrawn EP0675783A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE4243609 1992-12-22
DE4243609 1992-12-22
DE4300446 1993-01-09
DE4300446A DE4300446C2 (de) 1992-12-22 1993-01-09 Schraubwerkzeug, insbesondere Schraubendrehereinsatz
PCT/EP1993/003657 WO1994014576A1 (fr) 1992-12-22 1993-12-22 Outil, notamment embout de tournevis

Publications (1)

Publication Number Publication Date
EP0675783A1 true EP0675783A1 (fr) 1995-10-11

Family

ID=25921647

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94903861A Withdrawn EP0675783A1 (fr) 1992-12-22 1993-12-22 Outil, notamment embout de tournevis

Country Status (3)

Country Link
EP (1) EP0675783A1 (fr)
AU (1) AU5815194A (fr)
WO (1) WO1994014576A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6152000A (en) * 1998-09-08 2000-11-28 Phillips Screw Company Driver bit and driver
TW200916277A (en) * 2007-10-05 2009-04-16 Bing-Wen Huang Improved structure of screwdriver bit
GB2476917B (en) 2008-11-07 2013-10-23 Milwaukee Electric Tool Corp Tool bit with curved shank
US10022845B2 (en) 2014-01-16 2018-07-17 Milwaukee Electric Tool Corporation Tool bit
US11059162B2 (en) 2017-05-17 2021-07-13 Milwaukee Electric Tool Corporation Screwdriver
USD855433S1 (en) 2017-08-09 2019-08-06 Milwaukee Electric Tool Corporation Screwdriver
US11638987B2 (en) 2017-12-01 2023-05-02 Milwaukee Electric Tool Corporation Wear resistant tool bit
USD921468S1 (en) 2018-08-10 2021-06-08 Milwaukee Electric Tool Corporation Driver bit

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1561327A (fr) * 1968-01-29 1969-03-28
US4343866A (en) * 1975-10-16 1982-08-10 Manville Service Corporation Deeply embossed sheet product
FR2562451A1 (fr) * 1984-04-10 1985-10-11 Bruss Polt I Plaquette coupante composite pour l'usinage de pieces a grande resistance et procede de fabrication de cette plaquette
DE3416841A1 (de) * 1984-05-07 1985-11-07 Etablissement Agura, Vaduz Verfahren zur herstellung eines heizkessels mit einer doppelwandigen, spiralfoermigen lamelle als ein waermeuebertragendes medium fuehrendem teil
SE467649B (sv) * 1988-10-21 1992-08-24 Sandvik Ab Sintrat dubbelpositivt skaer bestaaende av tvaa identiska pulverkroppar, samt metod foer tillverkning av skaeret
US5032352A (en) * 1990-09-21 1991-07-16 Ceracon, Inc. Composite body formation of consolidated powder metal part
DE9211907U1 (de) * 1992-02-25 1992-11-26 USH Schraubwerkzeugfabrik Ulrich Schmidt, 5912 Hilchenbach Schraubendreherbits und Halter für hand- und maschinenbetätigte Schraubwerkzeuge

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9414576A1 *

Also Published As

Publication number Publication date
AU5815194A (en) 1994-07-19
WO1994014576A1 (fr) 1994-07-07

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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17P Request for examination filed

Effective date: 19950616

AK Designated contracting states

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Designated state(s): DE FR GB

17Q First examination report despatched

Effective date: 19951214

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19970131