Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
  • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
  • B25B15/00—Screwdrivers
  • B25B15/001—Screwdrivers characterised by material or shape of the tool bit
  • B25B15/004—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section
  • B25B15/005—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section with cross- or star-shaped cross-section
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
  • B21K1/00—Making machine elements
  • B21K1/44—Making machine elements bolts, studs, or the like
  • B21K1/46—Making machine elements bolts, studs, or the like with heads
  • B21K1/463—Making machine elements bolts, studs, or the like with heads with recessed heads
• • 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
  • 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
  • F16B35/044—Specially-shaped ends
  • F16B35/045—Specially-shaped ends for retention or rotation by a tool

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Connection Of Plates (AREA)
• Forging (AREA)
• Portable Nailing Machines And Staplers (AREA)
• Insertion Pins And Rivets (AREA)
• Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
• Drilling Tools (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=25205573

Family Applications (2)

Family Applications Before (1)

Country Status (6)

Families Citing this family (2)

Family Cites Families (6)

• 0
  • NL NL112346D patent/NL112346C/xx active
  • NL NL251161D patent/NL251161A/xx unknown
• 1960
  • 1960-04-20 DE DE1960P0016554 patent/DE1922795U/de not_active Expired
  • 1960-04-20 DE DE1960G0032653 patent/DE1925198U/de not_active Expired
  • 1960-04-20 DE DE1960G0032603 patent/DE1923210U/de not_active Expired
  • 1960-04-20 DE DE1960P0024869 patent/DE1179769B/de active Pending
  • 1960-04-26 GB GB1463960A patent/GB953795A/en not_active Expired
  • 1960-04-26 AT AT40064A patent/AT244876B/de active
  • 1960-04-26 AT AT757762A patent/AT241248B/de active
  • 1960-04-30 ES ES0257752A patent/ES257752A1/es not_active Expired
  • 1960-05-02 BE BE590386A patent/BE590386A/fr unknown

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