DK149050C - STAR SCREW AND PROCEDURE FOR ITS MANUFACTURING - Google Patents

STAR SCREW AND PROCEDURE FOR ITS MANUFACTURING

Info

Publication number
DK149050C
DK149050C DK255179A DK255179A DK149050C DK 149050 C DK149050 C DK 149050C DK 255179 A DK255179 A DK 255179A DK 255179 A DK255179 A DK 255179A DK 149050 C DK149050 C DK 149050C
Authority
DK
Denmark
Prior art keywords
screw
axis
individual slots
lateral
impressed
Prior art date
Application number
DK255179A
Other languages
Danish (da)
Other versions
DK149050B (en
DK255179A (en
Inventor
Anton Gerhard
Original Assignee
Anton Gerhard
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 Anton Gerhard filed Critical Anton Gerhard
Publication of DK255179A publication Critical patent/DK255179A/en
Publication of DK149050B publication Critical patent/DK149050B/en
Application granted granted Critical
Publication of DK149050C publication Critical patent/DK149050C/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G3/00—Removable ornamental heads for nails, screws, or the like
    • 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
    • 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
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/14—Cap nuts; Nut caps or bolt caps

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Forging (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Sheet Holders (AREA)
  • Dowels (AREA)
  • Closures For Containers (AREA)

Abstract

1. Phillips screw (3) which is suitable for receiving a cap (26) and has four individual slots (5) which extend axisymmetrically from the screw head surface (11) and lie with their radially limiting flanks (9) on the lateral surface area of an inverted truncated cone and which are followed by a coaxial truncated cone-shaped recess (15), the two side walls (8) of each individual slot (5) running parallel to one another and radial impressed sections (20) being provided between each pair of peripherally adjacent individual slots (5), characterised in that the impressed sections (20) are lateral areas of cylinder segments parallel to the axis (6) of the screw (3), the cylinder axes of which, on the angle bisector between each pair of peripherally adjacent individual slots (5), are staggered outwards radially from the screw axis (6) and of which the generating line, producing each lateral limitation, is formed by a sharp edge (23) which at the same time forms an axially parallel limitation of the adjacent side wall (8) in the direction of the screw axis (6).
DK255179A 1978-06-20 1979-06-19 STAR SCREW AND PROCEDURE FOR ITS MANUFACTURING DK149050C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2826933A DE2826933C2 (en) 1978-06-20 1978-06-20 Phillips screw suitable for receiving a cover cap and method for its manufacture
DE2826933 1978-06-20

Publications (3)

Publication Number Publication Date
DK255179A DK255179A (en) 1979-12-21
DK149050B DK149050B (en) 1985-12-30
DK149050C true DK149050C (en) 1986-07-07

Family

ID=6042214

Family Applications (1)

Application Number Title Priority Date Filing Date
DK255179A DK149050C (en) 1978-06-20 1979-06-19 STAR SCREW AND PROCEDURE FOR ITS MANUFACTURING

Country Status (6)

Country Link
EP (1) EP0006139B1 (en)
AT (1) ATE364T1 (en)
DE (1) DE2826933C2 (en)
DK (1) DK149050C (en)
ES (1) ES244031Y (en)
NO (1) NO792041L (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3016890C1 (en) * 1980-05-02 1981-10-01 Elsenheimer, Wolfgang, 5768 Sundern Slotted 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
DE3481211D1 (en) * 1983-10-14 1990-03-08 Alfons Knoche UNIVERSAL SCREW.
IT1396825B1 (en) * 2009-11-11 2012-12-14 Grotto S P A METHOD FOR THE PRODUCTION OF A CLOTHING GARMENT

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2592462A (en) * 1951-09-11 1952-04-08 Res Eng & Mfg Recessed head fastener
NL112346C (en) * 1959-05-05
GB1162701A (en) * 1959-05-05 1969-08-27 Gkn Screws Fasteners Ltd Improvements in or relating to Screw Threaded Fasteners
US3134290A (en) * 1962-08-23 1964-05-26 Robertson Co H H Corrosion resistant metal screw with a plastic head
US3234982A (en) * 1963-06-24 1966-02-15 Gardner Denver Co Driver for recessed head fasteners
US3329057A (en) * 1966-06-20 1967-07-04 Robert B Salz Threaded fastener device
GB1526225A (en) * 1976-10-26 1978-09-27 Gkn Fasteners Ltd Fastener having a new driving recess

Also Published As

Publication number Publication date
ATE364T1 (en) 1981-11-15
NO792041L (en) 1979-12-21
DK149050B (en) 1985-12-30
EP0006139B1 (en) 1981-11-04
DE2826933C2 (en) 1980-04-24
DK255179A (en) 1979-12-21
EP0006139A1 (en) 1980-01-09
ES244031U (en) 1980-01-16
DE2826933B1 (en) 1979-08-23
ES244031Y (en) 1980-07-01

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Legal Events

Date Code Title Description
PBP Patent lapsed