GB1230442A - - Google Patents

Info

Publication number
GB1230442A
GB1230442A GB1230442DA GB1230442A GB 1230442 A GB1230442 A GB 1230442A GB 1230442D A GB1230442D A GB 1230442DA GB 1230442 A GB1230442 A GB 1230442A
Authority
GB
United Kingdom
Prior art keywords
screw
blade
circular recess
arcuate bottom
vaughn
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
Application number
Other languages
English (en)
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 GB1230442A publication Critical patent/GB1230442A/en
Expired 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)
GB1230442D 1968-05-28 1968-10-24 Expired GB1230442A (es)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
GB1230442A true GB1230442A (es) 1971-05-05

Family

ID=24944419

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1230442D Expired GB1230442A (es) 1968-05-28 1968-10-24

Country Status (8)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123509A (en) * 1982-06-25 1984-02-01 Atomic Energy Authority Uk Screw fasteners

Families Citing this family (2)

* 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
US4497225A (en) * 1983-05-06 1985-02-05 John Vaughn High torque fastener and driving tool

Family Cites Families (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
FR1423024A (fr) * 1964-11-17 1966-01-03 Procédé de perfectionnement aux vis à bois et à métaux
FR1375769A (fr) * 1963-07-05 1964-10-23 Procédé de perfectionnement aux vis à bois et à métaux, à tête fraisée

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123509A (en) * 1982-06-25 1984-02-01 Atomic Energy Authority Uk Screw fasteners

Also Published As

Publication number Publication date
BE724436A (es) 1969-05-02
DE1926761A1 (de) 1969-12-04
NL6816278A (es) 1969-12-02
FR1592713A (es) 1970-05-19
SE341895B (es) 1972-01-17
CH480552A (fr) 1969-10-31
JPS4938779B1 (es) 1974-10-21

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years