CA2183211A1 - Screw - Google Patents
ScrewInfo
- Publication number
- CA2183211A1 CA2183211A1 CA002183211A CA2183211A CA2183211A1 CA 2183211 A1 CA2183211 A1 CA 2183211A1 CA 002183211 A CA002183211 A CA 002183211A CA 2183211 A CA2183211 A CA 2183211A CA 2183211 A1 CA2183211 A1 CA 2183211A1
- Authority
- CA
- Canada
- Prior art keywords
- screw
- shank
- threaded portion
- cutting teeth
- wood
- 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.)
- Abandoned
Links
- 230000036346 tooth eruption Effects 0.000 claims abstract description 11
- 239000002023 wood Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 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
- F16B25/0036—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
-
- 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
- F16B25/0015—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 a soft organic material, e.g. wood or plastic
-
- 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
- F16B25/0057—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 screw having distinct axial zones, e.g. multiple axial thread sections with different pitch or thread cross-sections
-
- 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
- F16B33/00—Features common to bolt and nut
- F16B33/02—Shape of thread; Special thread-forms
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Dispersion Chemistry (AREA)
- Wood Science & Technology (AREA)
- Connection Of Plates (AREA)
- Joining Of Building Structures In Genera (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Heterocyclic Compounds That Contain Two Or More Ring Oxygen Atoms (AREA)
- Materials For Medical Uses (AREA)
- Polyesters Or Polycarbonates (AREA)
Abstract
A screw includes a shank and a head formed to a first end thereof and a second end of the shank is a sharp end, the shank having a threaded portion defined in an outer periphery thereof, the threaded portion having in at least one section thereof a plurality of radially defined cutting teeth.
Description
SCREW
2 R~CRGROI~ND OF THE I~V~;N110N
2 R~CRGROI~ND OF THE I~V~;N110N
3 1. Field of the Invention 4 The present invention relates to a screw and more particularly, to an improved screw which has a shanh aLld a 6 head formed to a first end thereof and a tip portion formed 7 to a second thereof, a threaded portion defined in an outer 8 periphery of the shank and the threaded portion including a 9 plurality of cutting teeth formed therein.
2. Brief Description of the Prior Art 11 A conventional screw is composed of a shank and a head 12 which is formed to one end of the shank and the other end of 13 the shank is a sharp end so as to penetrate into an object to 14 receive the screw. The shank has a threaded portion defined in an outer periphery thereof such that when the screw is 16 screwed into the object, the threaded portion is tightly 17 engaged with the material of the object and this causes an 18 advancing of the screw in the object. Accordingly, as the 19 screw penetrates the object, thereby encountering increasing surface contact with the object, an operator must use more 21 force to screw the screw such that the screw can be 22 completely screwed into the object.
23 The present invention intends to provide an improved 24 screw in which the threaded portion has cutting teeth formed thereto so as to facilitate the screwing of the screw to 26 mitigate and/or obviate the above-mentioned problems.
27 S~RY OF T}IE 1NVL... 110N
28 The present invention provides a screw which includes 3_ 2183211 1a shank and a head formed to a first end thereof and a second 2end of the shank is a sharp end. The shank has a threaded 3portion defined in an outer periphery thereof, the threaded 4portion having in at least one section thereof a plurality of 5radially defined cutting teeth defined radially .
6It is an object of the present invention to provide a 7screw having a plurality of cutting teeth defined therein so 8as to effectively screw the screw into an object.
gOther objects, advantages, and novel features of the 10invention will become more apparent from the following 11detailed description when taken in conjunction with the 12accompanying drawings.
14Fig. 1 is a perspective view of a screw in accordance 15with the present invention;
16Fig. 2 is an illustrative view of the screw which is 17going to be screwed into a piece of wood;
18Fig. 3 is a cross-sectional view, partly in section, 19of a threaded portion having cutting teeth of the screw, and 20Fig. 4 is a side elevational view, partly in section, 21of screw screwed into the piece of wood.
22DET~Tr~n DESCRIPTION OF TXE PREFERRED EMBODIMENT
23Referring to the drawings and initially to Figs. 1 24through 3, a screw in accordance with the present invention 25generally includes a shank 10 and a head 12 formed to a first 26end thereof and a second end of the shank 10 is a sharp end 2711. The shank 10 has a threaded portion 20 defined in an 28outer periphery thereof, the threaded portion 20 having in a 1 lower section thereof a plurality of radially defined cutting 2 teeth 22 defined radially therein.
3 Referring now to Fig. 4, the cutting teeth 22 cut into 4 a piece of wood 3 0 into which the screw is screwed.
Theref~re, whe~ an operator (not shown) screws the screw, the 6 cutting teeth 22 will effectively cut the piece of wood 30 to 7 facilitate the screw to be screwed into the piece of wood 30 8 and the threaded portion 20 without cutting teeth 22 is g tightly engaged with the wood 30 such that the screw can be easily screwed into the piece of wood 3 0 and is securely 11 engaged to the wood 3 0 .
12 Accordingly, the screw provides an effective feature 13 when being screwed into the piece of wood 3 0, the 14 configuration or the arrangement of the cutting teeth can be designed to meet requirements according to different 16 situations.
17 Although the invention has been explained in relation 18 to its preferred embodiment, it is to be understood that many 19 other possible modifications and variations can be made without departing from the spirit and scope of the invention 21 as hereinafter claimed.
2. Brief Description of the Prior Art 11 A conventional screw is composed of a shank and a head 12 which is formed to one end of the shank and the other end of 13 the shank is a sharp end so as to penetrate into an object to 14 receive the screw. The shank has a threaded portion defined in an outer periphery thereof such that when the screw is 16 screwed into the object, the threaded portion is tightly 17 engaged with the material of the object and this causes an 18 advancing of the screw in the object. Accordingly, as the 19 screw penetrates the object, thereby encountering increasing surface contact with the object, an operator must use more 21 force to screw the screw such that the screw can be 22 completely screwed into the object.
23 The present invention intends to provide an improved 24 screw in which the threaded portion has cutting teeth formed thereto so as to facilitate the screwing of the screw to 26 mitigate and/or obviate the above-mentioned problems.
27 S~RY OF T}IE 1NVL... 110N
28 The present invention provides a screw which includes 3_ 2183211 1a shank and a head formed to a first end thereof and a second 2end of the shank is a sharp end. The shank has a threaded 3portion defined in an outer periphery thereof, the threaded 4portion having in at least one section thereof a plurality of 5radially defined cutting teeth defined radially .
6It is an object of the present invention to provide a 7screw having a plurality of cutting teeth defined therein so 8as to effectively screw the screw into an object.
gOther objects, advantages, and novel features of the 10invention will become more apparent from the following 11detailed description when taken in conjunction with the 12accompanying drawings.
14Fig. 1 is a perspective view of a screw in accordance 15with the present invention;
16Fig. 2 is an illustrative view of the screw which is 17going to be screwed into a piece of wood;
18Fig. 3 is a cross-sectional view, partly in section, 19of a threaded portion having cutting teeth of the screw, and 20Fig. 4 is a side elevational view, partly in section, 21of screw screwed into the piece of wood.
22DET~Tr~n DESCRIPTION OF TXE PREFERRED EMBODIMENT
23Referring to the drawings and initially to Figs. 1 24through 3, a screw in accordance with the present invention 25generally includes a shank 10 and a head 12 formed to a first 26end thereof and a second end of the shank 10 is a sharp end 2711. The shank 10 has a threaded portion 20 defined in an 28outer periphery thereof, the threaded portion 20 having in a 1 lower section thereof a plurality of radially defined cutting 2 teeth 22 defined radially therein.
3 Referring now to Fig. 4, the cutting teeth 22 cut into 4 a piece of wood 3 0 into which the screw is screwed.
Theref~re, whe~ an operator (not shown) screws the screw, the 6 cutting teeth 22 will effectively cut the piece of wood 30 to 7 facilitate the screw to be screwed into the piece of wood 30 8 and the threaded portion 20 without cutting teeth 22 is g tightly engaged with the wood 30 such that the screw can be easily screwed into the piece of wood 3 0 and is securely 11 engaged to the wood 3 0 .
12 Accordingly, the screw provides an effective feature 13 when being screwed into the piece of wood 3 0, the 14 configuration or the arrangement of the cutting teeth can be designed to meet requirements according to different 16 situations.
17 Although the invention has been explained in relation 18 to its preferred embodiment, it is to be understood that many 19 other possible modifications and variations can be made without departing from the spirit and scope of the invention 21 as hereinafter claimed.
Claims (2)
1. A screw comprising a shank and a head formed to a first end thereof, said shank having a threaded portion defined in an outer periphery thereof, said threaded-portion having in at least one section thereof a plurality of radially defined cutting teeth.
2. The screw as claimed in claim 1 wherein a second end of said shank is a sharp end.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9607399A FR2749890B3 (en) | 1996-06-14 | 1996-06-14 | CUTTING THREAD SCREWS |
| NL1003399A NL1003399C1 (en) | 1996-06-14 | 1996-06-21 | Screw bolt. |
| DE29611864U DE29611864U1 (en) | 1996-06-14 | 1996-07-08 | screw |
| CA002183211A CA2183211A1 (en) | 1996-06-14 | 1996-08-13 | Screw |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9607399A FR2749890B3 (en) | 1996-06-14 | 1996-06-14 | CUTTING THREAD SCREWS |
| NL1003399A NL1003399C1 (en) | 1996-06-14 | 1996-06-21 | Screw bolt. |
| DE29611864U DE29611864U1 (en) | 1996-06-14 | 1996-07-08 | screw |
| CA002183211A CA2183211A1 (en) | 1996-06-14 | 1996-08-13 | Screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2183211A1 true CA2183211A1 (en) | 1998-02-14 |
Family
ID=27427282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002183211A Abandoned CA2183211A1 (en) | 1996-06-14 | 1996-08-13 | Screw |
Country Status (4)
| Country | Link |
|---|---|
| CA (1) | CA2183211A1 (en) |
| DE (1) | DE29611864U1 (en) |
| FR (1) | FR2749890B3 (en) |
| NL (1) | NL1003399C1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29812526U1 (en) * | 1998-07-14 | 1999-11-25 | Fischer Artur Werke Gmbh | Thread forming screw |
| DE19852339B4 (en) | 1998-11-13 | 2008-02-07 | TOGE-Dübel A. Gerhard KG | Concrete screw |
| DE10045274A1 (en) * | 2000-09-13 | 2002-03-21 | Toge Duebel A Gerhard Kg | Thread-forming screw, especially concrete screw |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB943575A (en) * | 1961-04-26 | 1963-12-04 | Gen Am Transport | Thread-swaging and fastening screws |
| US4844676A (en) * | 1986-10-23 | 1989-07-04 | Pheoll Manufacturing Company, Inc. | Self-penetrating screw |
| DE3926951C2 (en) * | 1989-08-14 | 1995-11-16 | Wakai Sangyo Kk | Clamping screw |
| DE4419988A1 (en) * | 1994-06-08 | 1995-12-14 | Eichsfelder Schraubenwerk Gmbh | Thread=cutting screw, in partic. for chipboard |
-
1996
- 1996-06-14 FR FR9607399A patent/FR2749890B3/en not_active Expired - Fee Related
- 1996-06-21 NL NL1003399A patent/NL1003399C1/en not_active IP Right Cessation
- 1996-07-08 DE DE29611864U patent/DE29611864U1/en not_active Expired - Lifetime
- 1996-08-13 CA CA002183211A patent/CA2183211A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| FR2749890B3 (en) | 1998-05-07 |
| NL1003399C1 (en) | 1997-12-23 |
| FR2749890A3 (en) | 1997-12-19 |
| DE29611864U1 (en) | 1996-09-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |