FR1441073A - Locking security screws - Google Patents

Locking security screws

Info

Publication number
FR1441073A
FR1441073A FR24573A FR24573A FR1441073A FR 1441073 A FR1441073 A FR 1441073A FR 24573 A FR24573 A FR 24573A FR 24573 A FR24573 A FR 24573A FR 1441073 A FR1441073 A FR 1441073A
Authority
FR
France
Prior art keywords
locking security
security screws
screws
locking
security
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
FR24573A
Other languages
French (fr)
Inventor
Pierre Henri Joseph Parmentier
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
Priority to FR24573A priority Critical patent/FR1441073A/en
Priority claimed from FR24572A external-priority patent/FR1443552A/en
Application granted granted Critical
Publication of FR1441073A publication Critical patent/FR1441073A/en
Priority to BE684086D priority patent/BE684086A/xx
Expired legal-status Critical Current

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
    • F16B23/0007—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
    • F16B23/0015—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 rectangular, e.g. one-slot head
    • 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
    • B25B15/007—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section with blade of flat or substantially flat cross-section
FR24573A 1965-07-13 1965-07-13 Locking security screws Expired FR1441073A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR24573A FR1441073A (en) 1965-07-13 1965-07-13 Locking security screws
BE684086D BE684086A (en) 1965-07-13 1966-07-13

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR24573A FR1441073A (en) 1965-07-13 1965-07-13 Locking security screws
FR24572A FR1443552A (en) 1965-07-13 1965-07-13 Special screwdrivers for security locking screws

Publications (1)

Publication Number Publication Date
FR1441073A true FR1441073A (en) 1966-06-03

Family

ID=26164766

Family Applications (1)

Application Number Title Priority Date Filing Date
FR24573A Expired FR1441073A (en) 1965-07-13 1965-07-13 Locking security screws

Country Status (2)

Country Link
BE (1) BE684086A (en)
FR (1) FR1441073A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3318941A1 (en) * 1983-05-25 1984-11-29 Wirth Maschinen- und Bohrgeräte-Fabrik GmbH, 5140 Erkelenz DEVICE FOR ROTATING AND AXIAL MOVING BOLTS

Also Published As

Publication number Publication date
BE684086A (en) 1966-12-16

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