FR445391A - Improvements in screws - Google Patents

Improvements in screws

Info

Publication number
FR445391A
FR445391A FR445391A FR445391DA FR445391A FR 445391 A FR445391 A FR 445391A FR 445391 A FR445391 A FR 445391A FR 445391D A FR445391D A FR 445391DA FR 445391 A FR445391 A FR 445391A
Authority
FR
France
Prior art keywords
screws
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
FR445391A
Other languages
French (fr)
Inventor
Maurice Steinman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 by Individual filed Critical Individual
Application granted granted Critical
Publication of FR445391A publication Critical patent/FR445391A/en
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
    • F16B23/0076—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)
  • Furniture Connections (AREA)
FR445391A 1912-01-19 1912-06-25 Improvements in screws Expired FR445391A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191201563T 1912-01-19

Publications (1)

Publication Number Publication Date
FR445391A true FR445391A (en) 1912-11-09

Family

ID=32569315

Family Applications (1)

Application Number Title Priority Date Filing Date
FR445391A Expired FR445391A (en) 1912-01-19 1912-06-25 Improvements in screws

Country Status (2)

Country Link
FR (1) FR445391A (en)
GB (1) GB191201563A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0013274A1 (en) * 1978-12-22 1980-07-09 Fa Karcher Schraubenwerke GmbH Mechanical connectors and fixing tool therefor
FR2544029A1 (en) * 1983-04-09 1984-10-12 Ford France SHUTTERING AND SEALING SCREWS FOR THREADED THREADS

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3313198A (en) * 1965-05-25 1967-04-11 Walton Marvin One-way screw for operation with high speed power tools
US3331274A (en) * 1965-06-01 1967-07-18 Walton Marvin Flatheaded one-way screw

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0013274A1 (en) * 1978-12-22 1980-07-09 Fa Karcher Schraubenwerke GmbH Mechanical connectors and fixing tool therefor
FR2544029A1 (en) * 1983-04-09 1984-10-12 Ford France SHUTTERING AND SEALING SCREWS FOR THREADED THREADS

Also Published As

Publication number Publication date
GB191201563A (en) 1912-08-01

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