GB669157A - Self-tapping screw fastener - Google Patents
Self-tapping screw fastenerInfo
- Publication number
- GB669157A GB669157A GB30453/49A GB3045349A GB669157A GB 669157 A GB669157 A GB 669157A GB 30453/49 A GB30453/49 A GB 30453/49A GB 3045349 A GB3045349 A GB 3045349A GB 669157 A GB669157 A GB 669157A
- Authority
- GB
- United Kingdom
- Prior art keywords
- self
- flute
- tapping
- tapping screw
- screw fastener
- 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
Links
- 238000010079 rubber tapping Methods 0.000 title abstract 4
- 230000036346 tooth eruption Effects 0.000 abstract 1
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
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/001—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed
- F16B25/0031—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed the screw being designed to be screwed into different materials, e.g. a layered structure or through metallic and wooden parts
-
- 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
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
- F16B25/0078—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw with a shaft of non-circular cross-section or other special geometric features of the shaft
-
- 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
- F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
- F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
- F16B25/0084—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by geometric details of the tip
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
Abstract
669,157. Self-tapping screws. PARKERKALON CORPORATION. Nov. 28, 1949 [July 1, 1949], No. 30453/49. Class 83 (iii). A self-tapping screw has a portion of the threads of the tapping portion 2 compressed into the body to form a wide shallow flute 3 whose bottom surface is substantially concentric with the root diameters of the cutting teeth so as to co-operate with the wall of the hole in the engaged material in breaking up chips. The thread - ends at the opposite side of the flute to the substantially radial cutting shoulders 4, rise gradually along an incline 5 tangential to the root diameter. More than one flute may be provided and they may be parallel to the screw axis or inclined to it.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US669157XA | 1949-07-01 | 1949-07-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB669157A true GB669157A (en) | 1952-03-26 |
Family
ID=22072535
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30453/49A Expired GB669157A (en) | 1949-07-01 | 1949-11-28 | Self-tapping screw fastener |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB669157A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE970937C (en) * | 1952-08-08 | 1958-11-13 | N S F Nuernberger Schraubenfab | Fixing screw with self-making thread |
US3136205A (en) * | 1962-02-19 | 1964-06-09 | Robertson Mfg Co | Self-tapping wood screw |
US4235149A (en) * | 1978-08-17 | 1980-11-25 | Veldman Donald R | Self-thread creating fastener and method and apparatus for making the same |
US4534690A (en) * | 1983-10-26 | 1985-08-13 | Illinois Tool Works Inc. | Assymetrically shaped thread forming screw and method of making same |
US5071301A (en) * | 1991-02-28 | 1991-12-10 | General Motors Corporation | Modified rolled thread form for studs |
DE4108332C1 (en) * | 1991-03-14 | 1992-08-13 | Sfs Stadler Holding Ag, Heerbrugg, Ch | |
GB2313167A (en) * | 1996-05-15 | 1997-11-19 | Chen Sen Yang | Screw for fibrous boards |
-
1949
- 1949-11-28 GB GB30453/49A patent/GB669157A/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE970937C (en) * | 1952-08-08 | 1958-11-13 | N S F Nuernberger Schraubenfab | Fixing screw with self-making thread |
US3136205A (en) * | 1962-02-19 | 1964-06-09 | Robertson Mfg Co | Self-tapping wood screw |
US4235149A (en) * | 1978-08-17 | 1980-11-25 | Veldman Donald R | Self-thread creating fastener and method and apparatus for making the same |
US4534690A (en) * | 1983-10-26 | 1985-08-13 | Illinois Tool Works Inc. | Assymetrically shaped thread forming screw and method of making same |
US5071301A (en) * | 1991-02-28 | 1991-12-10 | General Motors Corporation | Modified rolled thread form for studs |
DE4108332C1 (en) * | 1991-03-14 | 1992-08-13 | Sfs Stadler Holding Ag, Heerbrugg, Ch | |
GB2313167A (en) * | 1996-05-15 | 1997-11-19 | Chen Sen Yang | Screw for fibrous boards |
GB2313167B (en) * | 1996-05-15 | 2000-05-10 | Chen Sen Yang | Screw for fibrous boards |
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