ATA218386A - SCREW HEAD WITH SYMMETRIC RECESSING ARRANGEMENT - Google Patents

SCREW HEAD WITH SYMMETRIC RECESSING ARRANGEMENT

Info

Publication number
ATA218386A
ATA218386A AT218386A AT218386A ATA218386A AT A218386 A ATA218386 A AT A218386A AT 218386 A AT218386 A AT 218386A AT 218386 A AT218386 A AT 218386A AT A218386 A ATA218386 A AT A218386A
Authority
AT
Austria
Prior art keywords
recessing
symmetric
arrangement
screw head
screw
Prior art date
Application number
AT218386A
Other languages
German (de)
Other versions
AT384864B (en
Original Assignee
Schildberg Heinrich Ing
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 Schildberg Heinrich Ing filed Critical Schildberg Heinrich Ing
Priority to AT218386A priority Critical patent/AT384864B/en
Publication of ATA218386A publication Critical patent/ATA218386A/en
Application granted granted Critical
Publication of AT384864B publication Critical patent/AT384864B/en

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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
AT218386A 1986-08-13 1986-08-13 Screw head with symmetrical recess arrangement AT384864B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT218386A AT384864B (en) 1986-08-13 1986-08-13 Screw head with symmetrical recess arrangement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT218386A AT384864B (en) 1986-08-13 1986-08-13 Screw head with symmetrical recess arrangement

Publications (2)

Publication Number Publication Date
ATA218386A true ATA218386A (en) 1987-06-15
AT384864B AT384864B (en) 1988-01-25

Family

ID=3529487

Family Applications (1)

Application Number Title Priority Date Filing Date
AT218386A AT384864B (en) 1986-08-13 1986-08-13 Screw head with symmetrical recess arrangement

Country Status (1)

Country Link
AT (1) AT384864B (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1521141A (en) * 1975-07-19 1978-08-16 Gkn Fasteners Ltd Threaded fastener
US4202244A (en) * 1978-07-26 1980-05-13 Technofast, Inc. Recessed head screw
DE3337535A1 (en) * 1983-10-14 1985-05-02 Alfons 5758 Fröndenberg Knoche Screw having an improved internal drive, a stamping die for pressing the internal drive of such a screw, and a screwdriver for this screw

Also Published As

Publication number Publication date
AT384864B (en) 1988-01-25

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties