GB1376586A - Fasteners - Google Patents
FastenersInfo
- Publication number
- GB1376586A GB1376586A GB1473274A GB1473274A GB1376586A GB 1376586 A GB1376586 A GB 1376586A GB 1473274 A GB1473274 A GB 1473274A GB 1473274 A GB1473274 A GB 1473274A GB 1376586 A GB1376586 A GB 1376586A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lobes
- thread
- shank portion
- fastener
- workentering
- 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
- 238000005096 rolling process Methods 0.000 abstract 2
- 238000010079 rubber tapping Methods 0.000 abstract 2
- 238000010276 construction Methods 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H3/00—Making helical bodies or bodies having parts of helical shape
- B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
- B21H3/027—Rolling of self-tapping screws
-
- 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
- F16B25/0021—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 material being metal, e.g. sheet-metal or aluminium
-
- 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
- F16B25/0042—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 the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw
- F16B25/0052—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 the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw the ridge having indentations, notches or the like in order to improve the cutting behaviour
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Forging (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
1376586 Self-tapping screws; rolling USM CORP 23 May 1973 [24 May 1972] 14732/74 Divided out of 1376585 Headings B3N and B3M A self-tapping threaded fastener comprises a cylindrical shank portion 12, a tapering workentering portion 16, a continuous thread formed on the work-entering portion and part of the shank portion, and a plurality of rows of thread forming lobes 30 superimposed on said thread over only the work-entering portion, one of said rows includes a lobe or lobes 30<SP>1</SP> which close to the junction of the shank portion and the workentering portion extend radially further from the longitudinal axis of the fastener than the distance from the axis to the crest of the thread on the shank portion. The fastener is formed by rolling between a primary and secondary die. Only the primary has lobe forming recesses whilst both dies have a rerolling section whereby after the lobes are formed the lobes on all but one row are rerolled to give the required construction.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US25637072A | 1972-05-24 | 1972-05-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1376586A true GB1376586A (en) | 1974-12-04 |
Family
ID=22972001
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1473274A Expired GB1376586A (en) | 1972-05-24 | 1973-05-23 | Fasteners |
| GB2477973A Expired GB1376585A (en) | 1972-05-24 | 1973-05-23 | Fasteners |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2477973A Expired GB1376585A (en) | 1972-05-24 | 1973-05-23 | Fasteners |
Country Status (18)
| Country | Link |
|---|---|
| AT (1) | AT339118B (en) |
| BE (1) | BE799936A (en) |
| CA (1) | CA977192A (en) |
| CH (1) | CH572165A5 (en) |
| DE (2) | DE2322351C2 (en) |
| ES (1) | ES415433A1 (en) |
| FI (1) | FI58819C (en) |
| FR (1) | FR2186084A5 (en) |
| GB (2) | GB1376586A (en) |
| HK (2) | HK65778A (en) |
| IE (1) | IE37620B1 (en) |
| IL (1) | IL42270A0 (en) |
| IT (1) | IT987827B (en) |
| LU (1) | LU67649A1 (en) |
| NL (1) | NL174914C (en) |
| NO (2) | NO139343C (en) |
| SE (1) | SE397394B (en) |
| ZA (1) | ZA733514B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2703433A1 (en) * | 1977-01-28 | 1978-12-07 | Schumacher Wilhelm Kg | THREAD FORMING SCREW AND METHOD OF MANUFACTURING THE SAME AND ROLLING JAW FOR PERFORMING THE METHOD |
| DE2844412C2 (en) * | 1978-10-12 | 1986-03-27 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Cup-shaped housing for electrical components |
| US4411147A (en) * | 1981-08-12 | 1983-10-25 | Russell Burdsall & Ward Corporation | Rolling dies and method of forming the same |
| DE102022121434A1 (en) | 2022-08-24 | 2024-02-29 | Ejot Se & Co. Kg | Screw for direct screwing into a component |
| DE102022121435A1 (en) | 2022-08-24 | 2024-02-29 | Ejot Se & Co. Kg | Screw for direct screwing into a component |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2348850A (en) * | 1939-05-03 | 1944-05-16 | Groov Pin Corp | Art of screw rolling |
| FR1337952A (en) * | 1961-10-25 | 1963-09-20 | Gen Am Transport | Groove-less tapping tools and manufacturing processes |
| US3426642A (en) * | 1962-02-05 | 1969-02-11 | Res Eng & Mfg | Self-tapping screws with threadforming projections |
| US3504722A (en) * | 1968-11-20 | 1970-04-07 | Lamson & Sessions Co | Thread forming and locking fastener |
-
1973
- 1973-02-16 CA CA163,957A patent/CA977192A/en not_active Expired
- 1973-05-03 DE DE2322351A patent/DE2322351C2/de not_active Expired - Lifetime
- 1973-05-03 DE DE2322351A patent/DE2322351A1/en active Granted
- 1973-05-09 FI FI1498/73A patent/FI58819C/en active
- 1973-05-10 CH CH701373A patent/CH572165A5/xx not_active IP Right Cessation
- 1973-05-10 IE IE741/73A patent/IE37620B1/en unknown
- 1973-05-15 IL IL42270A patent/IL42270A0/en unknown
- 1973-05-18 NL NLAANVRAGE7307022,A patent/NL174914C/en not_active IP Right Cessation
- 1973-05-22 FR FR7318538A patent/FR2186084A5/fr not_active Expired
- 1973-05-23 AT AT448573A patent/AT339118B/en not_active IP Right Cessation
- 1973-05-23 LU LU67649A patent/LU67649A1/xx unknown
- 1973-05-23 NO NO2121/73A patent/NO139343C/en unknown
- 1973-05-23 ZA ZA733514A patent/ZA733514B/en unknown
- 1973-05-23 IT IT24448/73A patent/IT987827B/en active
- 1973-05-23 SE SE7307258A patent/SE397394B/en unknown
- 1973-05-23 GB GB1473274A patent/GB1376586A/en not_active Expired
- 1973-05-23 GB GB2477973A patent/GB1376585A/en not_active Expired
- 1973-05-23 BE BE131440A patent/BE799936A/en not_active IP Right Cessation
- 1973-05-24 ES ES415433A patent/ES415433A1/en not_active Expired
-
1975
- 1975-03-03 NO NO750695A patent/NO750695L/no unknown
-
1978
- 1978-11-16 HK HK657/78A patent/HK65778A/en unknown
- 1978-11-16 HK HK658/78A patent/HK65878A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH572165A5 (en) | 1976-01-30 |
| IE37620B1 (en) | 1977-08-31 |
| HK65878A (en) | 1978-11-24 |
| NL7307022A (en) | 1973-11-27 |
| ZA733514B (en) | 1974-11-27 |
| ES415433A1 (en) | 1976-02-16 |
| NO139343C (en) | 1979-02-21 |
| SE397394B (en) | 1977-10-31 |
| FI58819B (en) | 1980-12-31 |
| NL174914C (en) | 1984-09-03 |
| DE2322351C2 (en) | 1990-08-23 |
| NO139343B (en) | 1978-11-13 |
| NO750695L (en) | 1973-11-27 |
| AU5598073A (en) | 1974-11-28 |
| NL174914B (en) | 1984-04-02 |
| LU67649A1 (en) | 1973-07-26 |
| FI58819C (en) | 1981-04-10 |
| GB1376585A (en) | 1974-12-04 |
| HK65778A (en) | 1978-11-24 |
| FR2186084A5 (en) | 1974-01-04 |
| IT987827B (en) | 1975-03-20 |
| CA977192A (en) | 1975-11-04 |
| BE799936A (en) | 1973-09-17 |
| DE2322351A1 (en) | 1973-12-06 |
| AT339118B (en) | 1977-10-10 |
| IE37620L (en) | 1973-11-24 |
| IL42270A0 (en) | 1973-07-30 |
| ATA448573A (en) | 1977-01-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PE20 | Patent expired after termination of 20 years |
Effective date: 19930522 |