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BE652149A - - Google Patents

Info

Publication number
BE652149A
BE652149A BE652149A BE652149A BE652149A BE 652149 A BE652149 A BE 652149A BE 652149 A BE652149 A BE 652149A BE 652149 A BE652149 A BE 652149A BE 652149 A BE652149 A BE 652149A
Authority
BE
Belgium
Application number
BE652149A
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 filed Critical
Publication of BE652149A publication Critical patent/BE652149A/xx

Links

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
    • F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0076—Specially shaped nuts or heads of bolts or screws for rotations by a tool causing slipping of the tool in loosening rotation, i.e. disabling unscrewing unless another tool is used

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
BE652149A 1963-08-21 1964-08-21 BE652149A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US30354263A 1963-08-21 1963-08-21

Publications (1)

Publication Number Publication Date
BE652149A true BE652149A (en) 1965-02-22

Family

ID=23172589

Family Applications (1)

Application Number Title Priority Date Filing Date
BE652149A BE652149A (en) 1963-08-21 1964-08-21

Country Status (2)

Country Link
BE (1) BE652149A (en)
GB (1) GB1074513A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990008267A1 (en) * 1989-01-10 1990-07-26 Thiffault Jean Claude Engaging and interlocking notches for all types of turnable objects

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2236569B (en) * 1989-10-03 1993-11-17 Norman Cropper A security screw
GB2290999B (en) * 1994-07-09 1998-12-16 Nat Power Plc Improvements relating to labyrinth seals
DE29903686U1 (en) * 1999-03-02 2000-07-13 fischerwerke Artur Fischer GmbH & Co. KG, 72178 Waldachtal screw
DE19955438A1 (en) * 1999-11-18 2001-06-13 Klappstein Kurt Safety screw head has stop faces for transmission of screw-in forces, and opposite faces run at angle abutment-free
EP2475896B1 (en) * 2009-09-11 2014-11-05 Flaig, Hartmut Threaded element and tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990008267A1 (en) * 1989-01-10 1990-07-26 Thiffault Jean Claude Engaging and interlocking notches for all types of turnable objects

Also Published As

Publication number Publication date
GB1074513A (en) 1967-07-05

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