FR2202550A6 - - Google Patents
Info
- Publication number
- FR2202550A6 FR2202550A6 FR7235903A FR7235903A FR2202550A6 FR 2202550 A6 FR2202550 A6 FR 2202550A6 FR 7235903 A FR7235903 A FR 7235903A FR 7235903 A FR7235903 A FR 7235903A FR 2202550 A6 FR2202550 A6 FR 2202550A6
- Authority
- FR
- France
- 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
Links
Classifications
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- 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
-
- 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
- F16B23/003—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 star-shaped or multi-lobular, e.g. Torx-type, twelve-point star
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7235903A FR2202550A6 (fi) | 1972-08-10 | 1972-10-11 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7228866A FR2196026A5 (fi) | 1972-08-10 | 1972-08-10 | |
FR7235903A FR2202550A6 (fi) | 1972-08-10 | 1972-10-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2202550A6 true FR2202550A6 (fi) | 1974-05-03 |
Family
ID=26217274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7235903A Expired FR2202550A6 (fi) | 1972-08-10 | 1972-10-11 |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2202550A6 (fi) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0677667A1 (en) * | 1994-04-14 | 1995-10-18 | Carlo Sala | Screw and relative screwing tool |
-
1972
- 1972-10-11 FR FR7235903A patent/FR2202550A6/fr not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0677667A1 (en) * | 1994-04-14 | 1995-10-18 | Carlo Sala | Screw and relative screwing tool |
US5641258A (en) * | 1994-04-14 | 1997-06-24 | Sala; Carlo | Recessed screw head |