JPS4938779B1 - - Google Patents

Info

Publication number
JPS4938779B1
JPS4938779B1 JP3908869A JP3908869A JPS4938779B1 JP S4938779 B1 JPS4938779 B1 JP S4938779B1 JP 3908869 A JP3908869 A JP 3908869A JP 3908869 A JP3908869 A JP 3908869A JP S4938779 B1 JPS4938779 B1 JP S4938779B1
Authority
JP
Japan
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.)
Pending
Application number
JP3908869A
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 filed Critical
Publication of JPS4938779B1 publication Critical patent/JPS4938779B1/ja
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F16B23/0015—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 rectangular, e.g. one-slot head
    • 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
    • B25B15/007—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section with blade of flat or substantially flat cross-section

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Basic Packing Technique (AREA)
JP3908869A 1968-05-28 1969-05-21 Pending JPS4938779B1 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US73264868A 1968-05-28 1968-05-28

Publications (1)

Publication Number Publication Date
JPS4938779B1 true JPS4938779B1 (ja) 1974-10-21

Family

ID=24944419

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3908869A Pending JPS4938779B1 (ja) 1968-05-28 1969-05-21

Country Status (8)

Country Link
JP (1) JPS4938779B1 (ja)
BE (1) BE724436A (ja)
CH (1) CH480552A (ja)
DE (1) DE1926761A1 (ja)
FR (1) FR1592713A (ja)
GB (1) GB1230442A (ja)
NL (1) NL6816278A (ja)
SE (1) SE341895B (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5444062A (en) * 1977-09-13 1979-04-07 Urashima Nori Kk Laver sheet

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123509B (en) * 1982-06-25 1986-01-29 Atomic Energy Authority Uk Screw fasteners
US4497225A (en) * 1983-05-06 1985-02-05 John Vaughn High torque fastener and driving tool

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2745120A (en) * 1949-07-11 1956-05-15 Rudolph M Vaughn Method of milling an undercut slot in a screw head
FR1375769A (fr) * 1963-07-05 1964-10-23 Procédé de perfectionnement aux vis à bois et à métaux, à tête fraisée
FR1423024A (fr) * 1964-11-17 1966-01-03 Procédé de perfectionnement aux vis à bois et à métaux

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2745120A (en) * 1949-07-11 1956-05-15 Rudolph M Vaughn Method of milling an undercut slot in a screw head
FR1375769A (fr) * 1963-07-05 1964-10-23 Procédé de perfectionnement aux vis à bois et à métaux, à tête fraisée
FR1423024A (fr) * 1964-11-17 1966-01-03 Procédé de perfectionnement aux vis à bois et à métaux

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5444062A (en) * 1977-09-13 1979-04-07 Urashima Nori Kk Laver sheet

Also Published As

Publication number Publication date
BE724436A (ja) 1969-05-02
DE1926761A1 (de) 1969-12-04
NL6816278A (ja) 1969-12-02
GB1230442A (ja) 1971-05-05
FR1592713A (ja) 1970-05-19
SE341895B (ja) 1972-01-17
CH480552A (fr) 1969-10-31

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