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
  • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
  • F16B25/001—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed
  • F16B25/0031—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed the screw being designed to be screwed into different materials, e.g. a layered structure or through metallic and wooden parts
• • 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
  • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
  • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
  • F16B25/0042—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw
  • F16B25/0047—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw the ridge being characterised by its cross-section in the plane of the shaft axis
• • 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
  • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
  • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
  • F16B25/0078—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw with a shaft of non-circular cross-section or other special geometric features of the shaft
• • 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
  • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
  • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
  • F16B35/041—Specially-shaped shafts
  • F16B35/042—Specially-shaped shafts for retention or rotation by a tool, e.g. of polygonal cross-section

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• Geometry (AREA)
• Drilling And Boring (AREA)
• Connection Of Plates (AREA)
• Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
• Lining Or Joining Of Plastics Or The Like (AREA)
• Dowels (AREA)

Applications Claiming Priority (1)

Publications (3)

Family

ID=23648025

Family Applications (1)

Country Status (18)

Families Citing this family (8)

• 1974
  • 1974-11-05 NL NL7414428A patent/NL7414428A/xx not_active Application Discontinuation
  • 1974-11-06 SE SE7413926A patent/SE401725B/xx unknown
  • 1974-11-08 FI FI3252/74A patent/FI325274A/fi unknown
  • 1974-11-11 IL IL46025A patent/IL46025A/xx unknown
  • 1974-11-12 NO NO744065A patent/NO138780C/no unknown
  • 1974-11-12 IE IE2328/74A patent/IE40327B1/xx unknown
  • 1974-11-14 CA CA213,680A patent/CA1008348A/en not_active Expired
  • 1974-11-14 IT IT29429/74A patent/IT1025693B/it active
  • 1974-11-14 DE DE19742454087 patent/DE2454087A1/de active Pending
  • 1974-11-15 GB GB49577/74A patent/GB1488125A/en not_active Expired
  • 1974-11-15 FR FR7437829A patent/FR2251742B1/fr not_active Expired
  • 1974-11-15 CH CH1525474A patent/CH577118A5/xx not_active IP Right Cessation
  • 1974-11-15 ZA ZA00747321A patent/ZA747321B/xx unknown
  • 1974-11-15 DK DK594774AA patent/DK141180B/da unknown
  • 1974-11-15 JP JP13184274A patent/JPS5428891B2/ja not_active Expired
  • 1974-11-15 AT AT918174A patent/AT339673B/de not_active IP Right Cessation
  • 1974-11-18 BR BR9659/74A patent/BR7409659A/pt unknown
  • 1974-11-19 AR AR256574A patent/AR202855A1/es active

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