FR2399568A1 - PHILLIPS SCREW, SCREWDRIVER AND TOOL FOR THE MANUFACTURE OF SUCH SCREWS - Google Patents

PHILLIPS SCREW, SCREWDRIVER AND TOOL FOR THE MANUFACTURE OF SUCH SCREWS

Info

Publication number
FR2399568A1
FR2399568A1 FR7823076A FR7823076A FR2399568A1 FR 2399568 A1 FR2399568 A1 FR 2399568A1 FR 7823076 A FR7823076 A FR 7823076A FR 7823076 A FR7823076 A FR 7823076A FR 2399568 A1 FR2399568 A1 FR 2399568A1
Authority
FR
France
Prior art keywords
screwdriver
manufacture
tool
screws
screw
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Withdrawn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
FR7823076A
Other languages
French (fr)
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.)
Bauer & Co Carl GmbH
Original Assignee
Bauer & Co Carl GmbH
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 Bauer & Co Carl GmbH filed Critical Bauer & Co Carl GmbH
Publication of FR2399568A1 publication Critical patent/FR2399568A1/en
Withdrawn legal-status Critical Current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
    • B25B15/004—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/44—Making machine elements bolts, studs, or the like
    • B21K1/46—Making machine elements bolts, studs, or the like with heads
    • B21K1/463—Making machine elements bolts, studs, or the like with heads with recessed heads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
    • F16B23/0023—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool substantially cross-shaped

Landscapes

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

Abstract

Pour recevoir un tournevis de forme correspondante, la tête 10 d'une vis est munie d'une empreinte cruciforme il qui comporte une cavité centrale 12 d'où partent radialement des fentes symétriques 13 et qui possède un fond conique 14 dont la pointe s'avance dans la tête 10. Le fond conique 14 de l'empreinte 11 a un angle au sommet compris entre 164 degrés et 178 degrés . L'invention est relative non seulement à une telle vis, mais encore au tournevis correspondant et à l'outil utilisé pour sa fabrication.To receive a screwdriver of corresponding shape, the head 10 of a screw is provided with a cruciform recess 11 which comprises a central cavity 12 from which symmetrical slots 13 start radially and which has a conical bottom 14 whose point s' advances in the head 10. The conical bottom 14 of the cavity 11 has an angle at the top of between 164 degrees and 178 degrees. The invention relates not only to such a screw, but also to the corresponding screwdriver and to the tool used for its manufacture.

FR7823076A 1977-08-06 1978-08-04 PHILLIPS SCREW, SCREWDRIVER AND TOOL FOR THE MANUFACTURE OF SUCH SCREWS Withdrawn FR2399568A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772735546 DE2735546A1 (en) 1977-08-06 1977-08-06 Slotted screw, screwdriver and tools for making such screws

Publications (1)

Publication Number Publication Date
FR2399568A1 true FR2399568A1 (en) 1979-03-02

Family

ID=6015817

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7823076A Withdrawn FR2399568A1 (en) 1977-08-06 1978-08-04 PHILLIPS SCREW, SCREWDRIVER AND TOOL FOR THE MANUFACTURE OF SUCH SCREWS

Country Status (5)

Country Link
DE (1) DE2735546A1 (en)
FR (1) FR2399568A1 (en)
GB (1) GB2002082A (en)
IT (1) IT1097637B (en)
SE (1) SE7808159L (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2221004A (en) * 1988-07-21 1990-01-24 Europ Ind Services Limited Tamperproof fastener, punch and driving tool
EP3635482B1 (en) * 2017-06-05 2023-10-18 SeeScan, Inc. Deep water enclosures for lighting and imaging

Also Published As

Publication number Publication date
IT1097637B (en) 1985-08-31
GB2002082A (en) 1979-02-14
DE2735546A1 (en) 1979-02-08
IT7826504A0 (en) 1978-08-04
SE7808159L (en) 1979-02-07

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Legal Events

Date Code Title Description
ST Notification of lapse