Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
  • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
  • B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
  • B23P15/32—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools twist-drills
• • 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
  • F16B25/0021—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 material being metal, e.g. sheet-metal or aluminium
• • 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
  • F16B25/0084—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 geometric details of the tip
• • 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
  • F16B25/10—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T408/00—Cutting by use of rotating axially moving tool
  • Y10T408/89—Tool or Tool with support
  • Y10T408/909—Having peripherally spaced cutting edges

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• Geometry (AREA)
• Drilling Tools (AREA)
• Drilling And Boring (AREA)
• Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
• Connection Of Plates (AREA)
• Disintegrating Or Milling (AREA)
• Forging (AREA)

Applications Claiming Priority (1)

Publications (2)

Family

ID=22139370

Family Applications (1)

Country Status (17)

Families Citing this family (12)

Family Cites Families (14)

• 1979
  • 1979-09-21 US US06/077,664 patent/US4295768A/en not_active Expired - Lifetime
• 1980
  • 1980-08-25 CA CA000358905A patent/CA1145600A/en not_active Expired
  • 1980-09-12 IE IE1915/80A patent/IE50120B1/en unknown
  • 1980-09-15 NZ NZ194954A patent/NZ194954A/en unknown
  • 1980-09-15 DE DE19803034745 patent/DE3034745A1/de not_active Withdrawn
  • 1980-09-17 CH CH6967/80A patent/CH649136A5/de not_active IP Right Cessation
  • 1980-09-18 SE SE8006556A patent/SE443412B/sv not_active IP Right Cessation
  • 1980-09-18 GB GB8030267A patent/GB2058616B/en not_active Expired
  • 1980-09-19 FR FR8020266A patent/FR2465915B1/fr not_active Expired
  • 1980-09-19 ES ES495560A patent/ES495560A0/es active Granted
  • 1980-09-19 MX MX183995A patent/MX151407A/es unknown
  • 1980-09-19 AU AU62552/80A patent/AU535906B2/en not_active Ceased
  • 1980-09-22 IT IT24815/80A patent/IT1132874B/it active
  • 1980-09-22 JP JP13224080A patent/JPS5652615A/ja active Pending
  • 1980-09-22 ZA ZA00805851A patent/ZA805851B/xx unknown
• 1984
  • 1984-12-24 SG SG914/84A patent/SG91484G/en unknown
• 1986
  • 1986-12-30 MY MY122/86A patent/MY8600122A/xx unknown

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