AT172380B - Schraubenzieher - Google Patents
SchraubenzieherInfo
- Publication number
- AT172380B AT172380B AT172380DA AT172380B AT 172380 B AT172380 B AT 172380B AT 172380D A AT172380D A AT 172380DA AT 172380 B AT172380 B AT 172380B
- Authority
- AT
- Austria
- Prior art keywords
- screwdriver
- Prior art date
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)
- Connection Of Plates (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US172380XA | 1943-01-19 | 1943-01-19 | |
GB758144A GB575978A (en) | 1943-01-19 | 1944-04-24 | Screws |
Publications (1)
Publication Number | Publication Date |
---|---|
AT172380B true AT172380B (de) | 1952-09-10 |
Family
ID=21781505
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT172380D AT172380B (de) | 1943-01-19 | 1950-07-03 | Schraubenzieher |
Country Status (3)
Country | Link |
---|---|
AT (1) | AT172380B (de) |
DE (1) | DE966580C (de) |
GB (1) | GB575978A (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2012280708A1 (en) | 2011-07-06 | 2014-01-23 | Nobel Biocare Services Ag | Screw and driver tool |
GB2509739A (en) | 2013-01-11 | 2014-07-16 | Nobel Biocare Services Ag | Dental drill bit with spherical head and helical fluting |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB427892A (en) * | 1933-05-09 | 1935-04-29 | Fitzpatrick Corp | Improvements in screw drivers |
NL42923C (de) * | 1934-07-03 | |||
US2046343A (en) * | 1934-07-03 | 1936-07-07 | Phillips Screw Co | Screw |
US2066484A (en) * | 1935-01-15 | 1937-01-05 | Philips Screw Company | Screw |
US2046839A (en) * | 1935-01-15 | 1936-07-07 | Phillips Screw Co | Screw |
-
1944
- 1944-04-24 GB GB758144A patent/GB575978A/en not_active Expired
-
1950
- 1950-07-03 AT AT172380D patent/AT172380B/de active
- 1950-08-15 DE DE1950G0003294 patent/DE966580C/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB575978A (en) | 1946-03-13 |
DE966580C (de) | 1957-08-22 |
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