BE724436A - - Google Patents
Info
- Publication number
- BE724436A BE724436A BE724436DA BE724436A BE 724436 A BE724436 A BE 724436A BE 724436D A BE724436D A BE 724436DA BE 724436 A BE724436 A BE 724436A
- Authority
- BE
- Belgium
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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Basic Packing Technique (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US73264868A | 1968-05-28 | 1968-05-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE724436A true BE724436A (US08017720-20110913-C00001.png) | 1969-05-02 |
Family
ID=24944419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE724436D BE724436A (US08017720-20110913-C00001.png) | 1968-05-28 | 1968-11-25 |
Country Status (8)
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5444062A (en) * | 1977-09-13 | 1979-04-07 | Urashima Nori Kk | Laver sheet |
| GB2123509B (en) * | 1982-06-25 | 1986-01-29 | Atomic Energy Authority Uk | Screw fasteners |
| US4497225A (en) * | 1983-05-06 | 1985-02-05 | John Vaughn | High torque fastener and driving tool |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2745120A (en) * | 1949-07-11 | 1956-05-15 | Rudolph M Vaughn | Method of milling an undercut slot in a screw head |
| FR1375769A (fr) * | 1963-07-05 | 1964-10-23 | Procédé de perfectionnement aux vis à bois et à métaux, à tête fraisée | |
| FR1423024A (fr) * | 1964-11-17 | 1966-01-03 | Procédé de perfectionnement aux vis à bois et à métaux |
-
1968
- 1968-10-24 GB GB1230442D patent/GB1230442A/en not_active Expired
- 1968-11-15 NL NL6816278A patent/NL6816278A/xx unknown
- 1968-11-21 CH CH1734668A patent/CH480552A/fr not_active IP Right Cessation
- 1968-11-21 FR FR1592713D patent/FR1592713A/fr not_active Expired
- 1968-11-25 BE BE724436D patent/BE724436A/xx not_active IP Right Cessation
-
1969
- 1969-05-21 JP JP3908869A patent/JPS4938779B1/ja active Pending
- 1969-05-24 DE DE19691926761 patent/DE1926761A1/de active Pending
- 1969-05-27 SE SE740069A patent/SE341895B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4938779B1 (US08017720-20110913-C00001.png) | 1974-10-21 |
| SE341895B (US08017720-20110913-C00001.png) | 1972-01-17 |
| DE1926761A1 (de) | 1969-12-04 |
| GB1230442A (US08017720-20110913-C00001.png) | 1971-05-05 |
| CH480552A (fr) | 1969-10-31 |
| NL6816278A (US08017720-20110913-C00001.png) | 1969-12-02 |
| FR1592713A (US08017720-20110913-C00001.png) | 1970-05-19 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE20 | Patent expired |
Owner name: VAUGHN RUDOLPH H. Effective date: 19881125 |