WO2009103935A1 - Thick resilient integrally coated screws - Google Patents

Thick resilient integrally coated screws Download PDF

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Publication number
WO2009103935A1
WO2009103935A1 PCT/GB2008/000895 GB2008000895W WO2009103935A1 WO 2009103935 A1 WO2009103935 A1 WO 2009103935A1 GB 2008000895 W GB2008000895 W GB 2008000895W WO 2009103935 A1 WO2009103935 A1 WO 2009103935A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
means
screw
amp
threads
screws
Prior art date
Application number
PCT/GB2008/000895
Other languages
French (fr)
Inventor
Michael Victor Rodrigues
Original Assignee
Michael Victor Rodrigues
Priority date (The priority date 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 date listed.)
Filing date
Publication date

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B13/00Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/14Non-metallic plugs or sleeves; Use of liquid, loose solid or kneadable material therefor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
    • F16B25/00Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/001Screws 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
    • F16B25/0026Screws 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 hard non-organic material, e.g. stone, concrete or drywall

Abstract

The coated meta screw (1) of the. invention comprises a tapered tip (It) with an assorted integral screw head (4) and has a substantial length of screw heads (2), thickly coated with resilient elastic material (3). The advantages thereof are : 1. Saves time, labour & costs on repetitive accurate masonry screw fixing tasks 2. Instant alignment in one go, one drilling using fixture item holes only 3. Eliminates extra hole alignment templates requiring removal to insert wall plugs 4. Eliminates separate box for screws & separate box for associated wall plugs 5. Eliminates frustrations arising from mix-ups - right screw/ wrong wall plug 6. Require smaller diameter drilled holes than the fatter wall plugs they supplant 7. stronges- 360 degrees resilient anchorage v/s quadruple faceted Rawlplug anchorage

Description

THICK RESILIENT INTEGRALLY COATED SCREWS

FIELD OF INVENTION: The invention relates to TRICS™ - "Thick Resilient Integrally Coated Screws", to supplant & eliminate present wall inserts & Rawlplugs® - used for fastening items to drilled holes in masonry walls. This lateral thinking Keep It Simple invention - TRICS™, directly engages the holes, providing accurate alignment, stronger anchoring, saving time, labour & costs for Professional and DIY clients.

Definitive characteristics of key words used & Excluded in this Invention: "Masonry Screws" - have tapered tips & deep flat troughs between sharp threads - "Machine Screws" - have flat tips and smooth symmetrical troughs & threads. MACHINE SCREWS ARE SPECIFICALLY EXCLUDED IN THIS PATENT.

Drawbacks of Rawlplugs® &Wall Inserts: - Even Rawlplug®, the popular successful wall fixing Company, concede (through statements in successive patents) that Rawlplugs® are beset with drawbacks - a few of which are cited below: - a. Hole too deep, Rawlplug® pushes too far in, fixing screw fails to engage. b. Solution - use Rawlplug® with rim! - New drawback, rim proud, impedes flush fixing. c. Fixing screw fits Article's holes, but matching Rawlplugs® required do not. d. Two masonry drill-bits, required 1st for screw, 2nd for fatter Rawlplug®. e. Rawlplugs® being fatter, article's holes cannot serve as drilling template. f. Heavy anchoring loads require bulky, expensive, expansible Rawlbolts-. g. Insert provided with Hammer fixings are too fat for article's holes. h. Rawlplugs® and Hammer fixing inserts cannot be removed or re-used. See page 2 for TRICS™ solutions to above drawbacks & problems.

Drawbacks of Concrete Screws: These self tapping unclad tapered tip screws are only suitable for light loads as substrates of concrete, bricks, plaster & mortar disintegrate when subjected to screw tension & shear. Solution - TRICS™ & Rawlplugs® use compression to obtain good anchorage in walls. TRICS™ Solutions to Drawbacks & Problems of present Rawlplugs.

The present invention overcomes all the cited drawbacks of Rawlplugs® by lateral thinking - providing a single unified TRICS™ - Thick Resilient Integrally Coated Screw to supplant and eliminate Rawlplugs , and their problems as follows :- a. Hole too deep, no problem, TRICS™, thick resilient coating engages on insertion. b. Rim! TRICS™ has no rim, giving inherent flush fixing. c. TRICS™ screw & resilient coating both fit Article's holes. d. Only one size drill required when using TRICS™. e. With TRICS™ article's holes can be used as drilling template. f. TRICS™ concept cater for light & heavy anchoring loads. g. TRICS™ work as hammer fixings and fit article's holes. h. TRICS™ screwed in or hammer fixed can be unscrewed and re-used.

Prior Art - Patent & Product Searches - No Anticipations: At the time of filing, a Worldwide Patent Database Search carried out on the European Patent Office esp@cenet Patent Search Engine showed no prior art of a Thick Resilient Integrally Coated Tapered Tip Screw as characterised in this Patent.

"Coated Machine Screws" are Not Anticipations: Present Nylon coated Eslok®, Scotchgrip®, Precote®, Torque Tip®, Microseal®, and Driseal screws are not anticipations as they are machine screws which are specifically excluded from scope of this invention - see claim 4.

Also, for these machine screws products to work necessitates a thin coating or thin patch in the thin clearance between machine threads. This invention specifically embodies a thick coating on the threads see first word of every claim of this Patent.

Product Searches on the World Wide Web showed no web sites or descriptions matching the claims cited in the present patent. Furthermore, searches through specialist screw supplier websites & catalogues — ScrewFix, trade hardware shops and large DIY chain stores - B & Q, Wicks and Homebase show no availability of present invention. SUMMARY OF INVENTION: "Thick Resilient Integrally Coated Screws" to supplant & eliminate Rawlplugs®, comprises tapered tip metal screws, with assorted integral screw heads have screw threads thickly coated with resilient elastic material.

USES: To supplant & eliminate concrete screws & Rawlplugs® - expansible wall inserts, used for fastening items to masonry walls.

ADVANTAGES:

1. Saves time, labour & costs on repetitive accurate masonry screw fixing tasks. 2. Instant alignment in one go, after each drilling using fixture items' holes only.

3. Eliminates additional alignment templates requiring removal to insert wall plugs.

4. Eliminates separate boxes for screws & separate boxes for mating wall plugs.

5. Eliminates frustrations arising from mismatch of right screw / wrong wall plug.

6. Requires smaller diameter drilled holes than the fatter wall plugs they eliminate. 7. Stronger - 360° resilient anchorage v/s quadruple faceted Rawlplugs® contact.

REFERENCE TO DRAWINGS:

Figure 1 shows a front elevation and hatched sectional illustration of one embodiment of the present invention shown on its own, clearly illustrating the thick, elastic coating bonded to the screw threads of a tapered tip screw.

Figure 2 Shows 3D illustrations of examples of commonly available screw head shapes and examples of commonly available screw driver recesses.

Figure 3 Shows 3D illustrations of examples of commonly available functional article hanging head shapes. DESCRIPTION

1. Referring to the drawings, the present invention titled "Thick Resilient Integrally Coated Screws ", {to supplant & eliminate Rawlplugs®), comprises a tapered tip, It, metal screw, 1, having substantial length of screw threads, 2, thickly coated with resilient elastic material, 3, integrally adhered by bonding process means, said screw,

1, provided with assorted commonly available screw heads, 4.

2. The resilient elastic material, 3, includes all flexible, resilient elastic synthetic materials suitable for bonding to metal screw threads, 2, - plastic, nylon, PTFE, silicone and polythene.

3. The scope of the "integrally adhered by bonding process means" covers all available bonding, treatment & coating process means - dipping, chemical bonding process means, heat bonding process means and related mass production process & handling means.

4. The profiles of the threads, 2, of the metal screw, 1, includes all commonly available tapered tip, It, metal screw profiles, sizes and thread forms including single helix, double helix, and treble helix, commonly available thread angles, thread pitches and thread shapes, but specifically excludes machine screw threads.

5. The scope of the assorted commonly available screw heads, 4, includes all commonly available screw driver head shapes (fig. 2), - square, 6, hex,7, countersink, 8, pan, 9

& dome, 10, the heads are provided with all commonly available screw driver recess shapes, including Philips®, 11, Posidrive®, 12, & Crosshead®, 13, driver recess means, additionally the screw head shapes (figs. 2 & 3) also includes embodiment of all commonly available item hanging functional head shapes including hooks - C, 14, L, 15, and Y, 16, shapes, and eye, 17, head shapes. 6. The scope of the metal of the metal screw means includes commonly used high tensile strength metal materials, - brass, all steels as well as commonly used finishes, coatings, plating, and treatments used in the manufacture of screws.

7. Optionally the substantial length of screw threads, 2, thick coating, 3, excludes coverage at start of first few threads (near tip, It,), and excludes coverage of end few threads (near head, 4.), and thickness of the coating, 3, and profile is provided to significantly follow profile of the screw threads, 2.

8. Optionally one preferred the heat bonding process means and related mass production process & handling means (not illustrated) comprises the screw heads held and rotated on electrically earthed, mating, magnetic mandrill means, induction heated to temperatures around 215° C, fusing and bonding of Nylon 11 powder (containing pigment and primer) electro-statically spray deposited (at electro-static voltages exceeding 10 KV) on to substrate - metal threads surface - with automatic process control means to ensure consistency of the described specific coverage plus peel-off proof integral adhesion of thick elastic nylon coating to the threads.

9. Optionally another alternative bonding process means and relative mass production process & handling means (not illustrated) comprises multiples of the screw head each held and rotated on multiple magnetic mandrill jig means, provided with dip coating process means of the threads into a sequence of vessels containing semi- liquid primer, resilient elastic material, then fixative process means, followed by conveyor handling and packaging means..

Claims

CLAIMS:
1. Thick Resilient Integrally Coated Screws , (to supplant & eliminate Rawlplugs®), comprising tapered tip, metal screw means, having substantial length of screw threads thickly coated with resilient elastic material means, integrally adhered by bonding process means, and integrally provided with assorted commonly available screw head means.
2. Thick Resilient Integrally Coated Screws as in claim 1, wherein said resilient elastic material means, includes all flexible, resilient elastic synthetic materials suitable for bonding to metal screw threads - plastic, nylon, PTFE, silicone and polythene.
3. Thick Resilient Integrally Coated Screws as in claim 2, wherein scope of said "integrally adhered by bonding process means" covers all available bonding, treatment & coating process means - dipping, chemical bonding process means, heat bonding process means and related mass production process & handling means.
4. Thick Resilient Integrally Coated Screws as in claim 3, wherein profiles of threads of said metal screw means includes all commonly available tapered tip, metal screw profiles, sizes and thread forms including single helix, double helix, and treble helix, commonly available thread angles, thread pitches and thread shapes - all claims specifically exclude machine screw threads.
5. Thick Resilient Integrally Coated Screws as in claim 4, wherein scope of said assorted commonly available screw head means includes all commonly available screw driver head shapes - square, hexagon, countersink, pan, & dome, including all commonly available screw driver recess shapes - Philips®, Posidrive®, & Crosshead driver recess means, additionally said screw heads include embodiments of all commonly available item hanging functional head shape means - C, L and Y shaped hooks, and eye head shapes.
6. Thick Resilient Integrally Coated Screws as in claim 5, wherein scope of said metal screw means includes commonly used high tensile strength metal materials, - brass, all steels as well as commonly used finishes, coatings, plating, and treatments used in the manufacture of screws.
7. Thick Resilient Integrally Coated Screws as in claim 6, wherein optionally said substantial length of screw threads thick coating excludes coverage at start of first few threads (near tip of tapered threads), and excludes coverage of end few threads (near head), and thickness of said coating and profile is provided to significantly follow profile of said screw threads.
8. Thick Resilient Integrally Coated Screws as in claim 7, wherein one preferred said heat bonding process means and related mass production process & handling means comprises said screw heads held and rotated on electrically earthed, mating, magnetic mandrill means, induction heated to temperatures around 215° C, fusing and bonding of Nylon 11 powder (containing pigment and primer) electro-statically spray deposited (at electro-static voltages exceeding 10 KV) on to substrate - metal threads surface - with automatic process control means to ensure consistency of said described specific coverage plus peel-off proof integral adhesion of thick elastic nylon coating to said threads.
9. Thick Resilient Integrally Coated Screws as in claim 8, wherein another alternative bonding process means and relative mass production process & handling means comprises multiples of said screw head each held and rotated on multiple magnetic mandrill jig means, provided with dip coating process means of said threads into a sequence of vessels containing semi-liquid primer, resilient elastic material, then fixative process means, followed by conveyor handling and packaging means..
PCT/GB2008/000895 2008-02-19 2008-03-14 Thick resilient integrally coated screws WO2009103935A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0802968A GB2443131B (en) 2008-02-19 2008-02-19 Thick resilient integrally coated screws
GB0802968.8 2008-02-19

Publications (1)

Publication Number Publication Date
WO2009103935A1 true true WO2009103935A1 (en) 2009-08-27

Family

ID=39269405

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2008/000895 WO2009103935A1 (en) 2008-02-19 2008-03-14 Thick resilient integrally coated screws

Country Status (2)

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GB (1) GB2443131B (en)
WO (1) WO2009103935A1 (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE357163C (en) * 1921-06-16 1922-08-17 Adalbert B Feldmar Duebel with resilient jacket
US2718485A (en) * 1953-07-21 1955-09-20 Paul P Heinley Method of bonding mechanical elements
GB1126262A (en) * 1965-12-16 1968-09-05 Illinois Tool Works Screws
US3897713A (en) * 1974-03-06 1975-08-05 Illinois Tool Works Double-ended stud
GB1453904A (en) * 1973-07-30 1976-10-27 Hadaway R J Fastener for building construction
US4545712A (en) * 1983-08-11 1985-10-08 The Oakland Corporation Thread lock
GB2236823A (en) * 1989-08-08 1991-04-17 Itw Ltd Coating of screws with sealant
JP2003172328A (en) * 2001-09-25 2003-06-20 Cemedine Co Ltd Fastener
EP1881210A1 (en) * 2006-07-21 2008-01-23 HILTI Aktiengesellschaft Fastening element

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE357163C (en) * 1921-06-16 1922-08-17 Adalbert B Feldmar Duebel with resilient jacket
US2718485A (en) * 1953-07-21 1955-09-20 Paul P Heinley Method of bonding mechanical elements
GB1126262A (en) * 1965-12-16 1968-09-05 Illinois Tool Works Screws
GB1453904A (en) * 1973-07-30 1976-10-27 Hadaway R J Fastener for building construction
US3897713A (en) * 1974-03-06 1975-08-05 Illinois Tool Works Double-ended stud
US4545712A (en) * 1983-08-11 1985-10-08 The Oakland Corporation Thread lock
GB2236823A (en) * 1989-08-08 1991-04-17 Itw Ltd Coating of screws with sealant
JP2003172328A (en) * 2001-09-25 2003-06-20 Cemedine Co Ltd Fastener
EP1881210A1 (en) * 2006-07-21 2008-01-23 HILTI Aktiengesellschaft Fastening element

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Also Published As

Publication number Publication date Type
GB2443131A (en) 2008-04-23 application
GB0802968D0 (en) 2008-03-26 grant
GB2443131B (en) 2008-08-27 grant

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