SE8300548D0 - DRILL SCREW - Google Patents
DRILL SCREWInfo
- Publication number
- SE8300548D0 SE8300548D0 SE8300548A SE8300548A SE8300548D0 SE 8300548 D0 SE8300548 D0 SE 8300548D0 SE 8300548 A SE8300548 A SE 8300548A SE 8300548 A SE8300548 A SE 8300548A SE 8300548 D0 SE8300548 D0 SE 8300548D0
- Authority
- SE
- Sweden
- Prior art keywords
- cutting surface
- drilling process
- drilling
- pilot end
- along
- Prior art date
Links
- 238000005553 drilling Methods 0.000 abstract 3
- 238000000034 method Methods 0.000 abstract 2
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
- F16B25/0021—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
- F16B25/0084—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
-
- 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
- F16B25/10—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws
- F16B25/103—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws by means of a drilling screw-point, i.e. with a cutting and material removing action
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Drilling Tools (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The fastener has a threaded shank (112) and a pilot end (116), which is generally elliptic in transverse section, to accomplish the drilling process. The pilot end (116) comprises a pair of flutes (118, 119), each of which has a cutting surface (120, 128) which has generally along the major axis of the ellipse, a transverse drag surface (140, 142) which is formed arcuately in the longitudinal direction and is of substantially constant radius (R) along its length to provide clearance for chips of material produced by the drilling process. The cutting surface (120, 128) may also be formed longitudinally arcuate to provide the correct rake for drilling. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US34602382A | 1982-02-05 | 1982-02-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
SE8300548D0 true SE8300548D0 (en) | 1983-02-02 |
SE8300548L SE8300548L (en) | 1983-08-06 |
Family
ID=23357597
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8300548A SE8300548L (en) | 1982-02-05 | 1983-02-02 | Self-tapping screws |
Country Status (17)
Country | Link |
---|---|
JP (1) | JPS58146711A (en) |
AU (1) | AU559300B2 (en) |
CA (1) | CA1217368A (en) |
CH (1) | CH659295A5 (en) |
DE (1) | DE3303466A1 (en) |
DK (1) | DK47783A (en) |
ES (1) | ES281729Y (en) |
FI (1) | FI830206L (en) |
FR (1) | FR2521234B1 (en) |
GB (1) | GB2114922B (en) |
HK (1) | HK83186A (en) |
IT (1) | IT1198422B (en) |
NL (1) | NL8300383A (en) |
NO (1) | NO830382L (en) |
NZ (1) | NZ202991A (en) |
SE (1) | SE8300548L (en) |
ZA (1) | ZA83289B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4836730A (en) * | 1985-01-17 | 1989-06-06 | Emhart Industries, Inc. | Fastener |
CH672171A5 (en) * | 1986-01-09 | 1989-10-31 | Emhart Ind | |
GB2233920A (en) * | 1989-07-18 | 1991-01-23 | Sandvik Ltd | Fluted drill |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3395603A (en) * | 1966-09-13 | 1968-08-06 | Parker Kaion Corp | Rotary threaded fasteners |
US3789725A (en) * | 1971-10-06 | 1974-02-05 | B Lindstrom | Self-drilling and self-tapping fastener and method of manufacture thereof |
IT1083022B (en) * | 1977-07-21 | 1985-05-21 | Mustad O & Figlio Spa | SELF-PERFORATING AND SELF-THREADING SCREW |
DE3022187C2 (en) * | 1980-06-13 | 1983-08-11 | Itw-Ateco Gmbh, 2000 Norderstedt | Drilling screw |
FR2751407A1 (en) * | 1996-07-16 | 1998-01-23 | Motorola Semiconducteurs | Threshold detector, for water level in washing machine or dish-washer |
-
1983
- 1983-01-11 NZ NZ202991A patent/NZ202991A/en unknown
- 1983-01-17 ZA ZA83289A patent/ZA83289B/en unknown
- 1983-01-21 CH CH335/83A patent/CH659295A5/en not_active IP Right Cessation
- 1983-01-21 FI FI830206A patent/FI830206L/en not_active Application Discontinuation
- 1983-01-25 CA CA000420183A patent/CA1217368A/en not_active Expired
- 1983-02-02 JP JP58016871A patent/JPS58146711A/en active Pending
- 1983-02-02 SE SE8300548A patent/SE8300548L/en not_active Application Discontinuation
- 1983-02-02 DE DE19833303466 patent/DE3303466A1/en not_active Withdrawn
- 1983-02-02 NL NL8300383A patent/NL8300383A/en not_active Application Discontinuation
- 1983-02-03 GB GB08302942A patent/GB2114922B/en not_active Expired
- 1983-02-04 ES ES1983281729U patent/ES281729Y/en not_active Expired
- 1983-02-04 AU AU11153/83A patent/AU559300B2/en not_active Ceased
- 1983-02-04 DK DK47783A patent/DK47783A/en unknown
- 1983-02-04 FR FR8301784A patent/FR2521234B1/en not_active Expired
- 1983-02-04 IT IT19426/83A patent/IT1198422B/en active
- 1983-02-04 NO NO830382A patent/NO830382L/en unknown
-
1986
- 1986-11-06 HK HK831/86A patent/HK83186A/en unknown
Also Published As
Publication number | Publication date |
---|---|
NZ202991A (en) | 1985-11-08 |
AU1115383A (en) | 1983-08-11 |
FI830206A0 (en) | 1983-01-21 |
CH659295A5 (en) | 1987-01-15 |
ES281729Y (en) | 1985-12-01 |
GB2114922B (en) | 1985-12-04 |
ZA83289B (en) | 1983-10-26 |
ES281729U (en) | 1985-05-01 |
GB2114922A (en) | 1983-09-01 |
NO830382L (en) | 1983-08-08 |
FR2521234B1 (en) | 1987-02-27 |
JPS58146711A (en) | 1983-09-01 |
IT1198422B (en) | 1988-12-21 |
DK47783A (en) | 1983-08-06 |
SE8300548L (en) | 1983-08-06 |
DK47783D0 (en) | 1983-02-04 |
AU559300B2 (en) | 1987-03-05 |
GB8302942D0 (en) | 1983-03-09 |
IT8319426A0 (en) | 1983-02-04 |
CA1217368A (en) | 1987-02-03 |
HK83186A (en) | 1986-11-14 |
FI830206L (en) | 1983-08-06 |
NL8300383A (en) | 1983-09-01 |
FR2521234A1 (en) | 1983-08-12 |
DE3303466A1 (en) | 1983-09-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAV | Patent application has lapsed |
Ref document number: 8300548-8 Effective date: 19880422 |