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)
• Lining Or Joining Of Plastics Or The Like (AREA)
• Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
• Dowels (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

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

Also Published As

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