BE478339A - - Google Patents
Info
- Publication number
- BE478339A BE478339A BE478339DA BE478339A BE 478339 A BE478339 A BE 478339A BE 478339D A BE478339D A BE 478339DA BE 478339 A BE478339 A BE 478339A
- 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
- F16B23/0023—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 cross-shaped
-
- 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
- B25B15/005—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section with cross- or star-shaped cross-section
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Connection Of Plates (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Joining Of Building Structures In Genera (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US470671A US2474994A (en) | 1942-12-30 | 1942-12-30 | Screw socket |
| US782875A US2507231A (en) | 1942-12-30 | 1947-10-29 | Screw driver having cruciform shaped bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE478339A true BE478339A (en) |
Family
ID=27043179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE478339D BE478339A (en) | 1942-12-30 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2507231A (en) |
| BE (1) | BE478339A (en) |
| CH (1) | CH281532A (en) |
| DE (1) | DE966464C (en) |
| FR (1) | FR958075A (en) |
| GB (1) | GB663163A (en) |
| NL (1) | NL74183C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3108623A (en) * | 1959-05-05 | 1963-10-29 | Phillips Screw Co | Tools for recessed head fasteners |
| US3187790A (en) * | 1959-05-18 | 1965-06-08 | Hi Shear Rivet Tool Company | Screw and screw driver coupling |
| NL276619A (en) * | 1961-03-31 | |||
| US4998454A (en) * | 1988-11-14 | 1991-03-12 | Black & Decker Inc. | Screwdriver bit for phillips-head fasteners |
| USD980707S1 (en) * | 2021-02-15 | 2023-03-14 | Min Woo Lee | Bolt |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10612C (en) * | P. SCHNEITLER in Berlin N., Müllerstrafse 179B | Innovations in screw heads and associated screwdrivers | ||
| US2046838A (en) * | 1934-07-03 | 1936-07-07 | Phillips Screw Co | Screw driver |
| NL42923C (en) * | 1934-07-03 | |||
| US2046840A (en) * | 1935-01-15 | 1936-07-07 | Phillips Screw Co | Screw driver |
| US2066484A (en) * | 1935-01-15 | 1937-01-05 | Philips Screw Company | Screw |
| US2046839A (en) * | 1935-01-15 | 1936-07-07 | Phillips Screw Co | Screw |
| US2084078A (en) * | 1935-11-15 | 1937-06-15 | American Screw Co | Method of making screws |
| US2084079A (en) * | 1935-11-15 | 1937-06-15 | American Screw Co | Screw |
| US2058197A (en) * | 1935-12-12 | 1936-10-20 | Maxwell A West | Screw |
-
0
- FR FR958075D patent/FR958075A/fr not_active Expired
- BE BE478339D patent/BE478339A/xx unknown
- NL NL74183D patent/NL74183C/xx active
-
1947
- 1947-10-29 US US782875A patent/US2507231A/en not_active Expired - Lifetime
- 1947-12-15 GB GB33059/47A patent/GB663163A/en not_active Expired
- 1947-12-24 CH CH281532D patent/CH281532A/en unknown
-
1949
- 1949-12-28 DE DEP495A patent/DE966464C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR958075A (en) | 1950-03-03 |
| GB663163A (en) | 1951-12-19 |
| CH281532A (en) | 1952-03-15 |
| NL74183C (en) | |
| US2507231A (en) | 1950-05-09 |
| DE966464C (en) | 1957-08-08 |