Title of Invention	A METHOD OF MANUFACTURE OF A SECURITY DOOR AND SUCH DOOR WHENEVER SO MANUFACTURED
Abstract	A security door comprising a framework of rails and stiles, the spaces between the rails and stiles being packed with filler material, the two faces of the framework bems adhesively bonded, respectively, to panels each panel being composed of layers of wooden veneers, the layers of each panel being bonded together, said layers 8Dd framework being of the same shape and size, characterised by at least one steel wire layer s8Ddwiched between two adjacent layel'l of veneers.

Title of Invention

A METHOD OF MANUFACTURE OF A SECURITY DOOR AND SUCH DOOR WHENEVER SO MANUFACTURED

Abstract

A security door comprising a framework of rails and stiles, the spaces between the rails and stiles being packed with filler material, the two faces of the framework bems adhesively bonded, respectively, to panels each panel being composed of layers of wooden veneers, the layers of each panel being bonded together, said layers 8Dd framework being of the same shape and size, characterised by at least one steel wire layer s8Ddwiched between two adjacent layel'l of veneers.

Full Text	This invention relates to a method of manufacture of a security door and such door whenever so manufactured. More particularly, the door proposed herein has a steel-wood composite structure and offers high resistance to break-in attempts, bullets fired from a gun and burglars' instruments. The manufacture of the said door involves simple and easy-to-carry out steps. The said door can thus be manufactured in the factory or even in situ, rendering the same cost-effective and economical. The security door, according to this invention, comprises a framework of rails and stiles, the spaces between the rails and stiles being packed with filler material, the two faces of the framework being adhesively bonded, respectively, to panels, each panel being composed of layers of wooden veneers together with at least one steel wire layer sandwiched between two adjacent layers of veneers, the layers of each panel being bonded together, said layers and framework being of the same shape and size. The method of manufacture of the security door, according to this invention, comprises the preparation of a framework of rails and stiles; packing the spaces between the rails and tiles with filler material: preparing panels of the shape and size of the framework, each panel being made up wooden veneers with at least one steel wire layer sandwiched between two adjacent veneer layers; adhesively bonding the layers of each panel together ; and adhesively bonding the two faces of the framework, respectively, to the panels, before trimming and finishing the same This invention will now be described with reference to the accompanying drawings, which illustrate by way of example, and not by way of limitation, one of the various possible embodiments of the security door proposed herein Fig. 1 illustrtating in part section an assembly of the said embodiment And Fig. 2 illustrating a cut-away view of the said embodiment. A framework F of rails( which are horizontal members) and stiles (which are vertical members) is prepared. The spaces between the rails and stiles are packed with filler materials comprising at least one of the following substances: treated and seasoned wood strips, plastic extruded profiles foams like polyurethane or phenolic or polystyrene foam. Panels P of the shape and size of the framework are prepared, each panel being made up wooden veneers V with at least one steel wire layer W sandwiched between two adjacent veneer layers. The layers of each panel are adhesively bonded together. Also, the two faces of the framework, are adhesively bonded respectively, to the panels, before trimming and finishing the same. The adhesive bonding between framework and panels and between the veneer layers of each panel is carried out by applying adhesives selected from natural and synthetic phenolic resins , resorcinol, cresol aldehydes, phenol formaldehyde, cross-linking PvAcs, urethane, acrylic co-polym ers. The adhesive bonding is followed by hardening with hardening agents such as phenol formaldehyde , which is novolak converted into a resol, reacting with substances selected from para-toluene, sulphonic acid, phenol, polyphenol, resorcinol, cresol, aldehydes, tanners PvAc, urethane and acrylics, ammonium a chloride or sulphate. Alternatively, the adhesive bonding is followed by hot pressing at 80 - 160 deg. C and between 18 - 28 Kg,/sq.cm. The framework is preferably made of kiln seasoned timber such as timber from plantations in order to avoid the use of forest wood for environmental reasons. The steel wire is pre-coated with an adhesive or a catalyst or both such as from natural and synthetic phenolic resins , resorcinol, cresol aldehydes, phenol formaldehyde, cross-linking PvAcs, urethane, acrylic co-polymers _ (adhesive) and para-toluene, sulphonic acid, phenol, polyphenol, resorcinol, cresol, aldehydes, tanners PvAc, urethane and acrylics, ammonium a chloride or sulphate, (catalyst). The steel wire layer is prepared by laying steel wires side by side. Additionally or in the alternative, the steel wires are woven together in m atrix form. Additionally or in the alternative the steel wires are prepared in mesh form to constitute the steel wire layer. The steel wires are preferably attached to each other by chemical bonding e.g. by the use of adhesives or by welding. The external lipping of the door is indicated by L. The terms and expressions herein are of description and not of limitation there being no intention in the use of such terms and expressions of excluding any equivalents of the features illustrated and described, but it is understood that various other embodiments of the door proposed herein are possible without departing from the scope and ambit of this invention. We Claim: 1. A security door comprising a framework of rails and stiles, the spaces between the raits and stiles being packed with filler material, the two faces of the framework being adhesively bonded, respectively, to panels, each panel being composed of layers of wooden veneers together with at least one steel wire layer sandwiched between two adjacent layers of veneers, the layers of each panel being bonded together, said layers and framework being of the same shape and size. 2. A door as claimed in Claim 1 wherein the filler material consists of at least one of the materials: treated and seasoned wood strips, plastic extruded profiles, plastic foams like polyurethane or phenolic or polystyrene foam. 3. A door as claimed in Claim 1 or Claim 2 wherein the framework is made of kiln seasoned timber. 4. A door as claimed in any one of the preceding Claims wherein the steel wire is provided with a coat of an adhesive. 5. A door as claimed in any one of the preceding Claims wherein the steel wire is provided with a coat of a catalyst. 6. A door as claimed in Claim 4 wherein the adhesive consists of at least one of the following substances, namely, natural and synthetic phenolic resins , resorcinol, cresol aldehydes, phenol formaldehyde, cross-linking PvAcs, urethane, acrylic co-polymers. 7. A door as claimed in Claim 5 wherein the catalyst consists of at least one of the following substances: para-toluene, sulphonic acid, phenol, polyphenol, resorcinol, cresol, aldehydes, tanners PvAc, urethane and acrylics, ammonium a chloride or sulphate. 8. A door as claimed in any one of the preceding Claims wherein the steel wire layer is composed of steel wires laid side by side. 9. A door as claimed in any one of the preceding Claims wherein the steel wire layer is composed of steel wires in woven matrix form. 10.A door as claimed in any one of the preceding Claims wherein the steel wire layer is composed of steel wires in mesh form. 11. A door as claimed in any one of the preceding Claims wherein the steel wire layer is composed of steel wires attached to each other. 12.A door as claimed in Claim 11 wherein the steel wires are chemically bonded together. 13.A door as claimed in Claim 11 wherein the steel wires are welded together. 14.A security door substantially as herein described and illustrated with reference to the accompanying drawings. 15. A method of manufacture of a security door comprising the preparation of a framework of rails and stiles; packing the spaces between the rails and tiles with filler material: preparing panels of the shape and size of the framework, each panel being made up wooden veneers with at least one steel wire layer sandwiched between two adjacent veneer layers; adhesively bonding the layers of each panel together ; and adhesively bonding the two faces of the framework, respectively, to the panels, before trimming and finishing the same 16.A method as claimed in Claim 15 wherein the adhesive bonding between framework and panels and between the veneer layers of each panel is carried out by applying adhesives selected from natural and synthetic phenolic resins , resorcinol, cresol aldehydes, phenol formaldehyde, cross-linking PvAcs, urethane, acrylic co-polymers. 17.A method as claimed in Claim 15 or Claim 16 wherein the adhesive bonding is followed by hardening with hardening agents such as phenol formaldehyde , which is novolak converted into a resol, reacting with substances selected from para-toluene, sulphonic acid, phenol, polyphenol, resorcinol, cresol, aldehydes, tanners PvAc, urethane and acrylics, ammonium chloride or sulphate 18.A method as claimed in Claim 15 or Claim 16 wherein the adhesive bonding is followed by hot pressing at 80 - 160 deg. C and between 18 -28 Kg,/sq.cm. 19.A method as claimed in Claim IS wherein the spaces in the framework are packed with filler materials consisting of at least one of the following materials: treated and seasoned wood strips, plastic extruded profiles, plastic foams like polyurethane or phenolic or polystyrene foam. 20.A method as claimed in Claim 15 or Claim 16 wherein the framework is made of kiln seasoned timber. 21.A method as claimed in any one of the preceding Claims 15 to 17 wherein the steel wire is pre-coated with an adhesive. 22.A method as claimed in any one of the preceding Claims 15 to 18 wherein the steel wire is pre-coated with a catalyst. 23.A method as claimed in Claim 18 wherein the adhesive consists of at least one of the following substances : natural and synthetic phenolic resins , resorcinol, cresol aldehydes, phenol formaldehyde, cross-linking PvAcs, urethane, acrylic co-polymers. 24. A method as claimed in Claim 19 wherein the catalyst consists of at least one of the following substances : para-toluene, sulphonic acid, phenol, polyphenol, resorcinol, cresol, aldehydes, tanners PvAc, urethane and acrylics, ammoniuma chloride or sulphate. 25.A method as claimed in any one of the preceding Claims 15 to 21 wherein the steel wire layer is prepared by laying steel wires side by side. 26.A method as claimed in any one of the preceding Claims 15 to 22 wherein the steel wires are woven together in matrix form. 27. A method as claimed in any one of the preceding Claims 15 to 23 wherein the steel wires are prepared in mesh form to constitute the steel wire layer. 28.A method as claimed in any one of the preceding Claims 15 to 54 wherein the steel wires are attached together to form the steel wire layer. 29.A method as claimed in any one of the preceding Claims 15 to 28 wherein the steel wires are chemically bonded together to form the steel wire layer. 30.A method as claimed in any one of the preceding Claims 15 to 28 wherein steel wires are welded together to form the steel wire layer. 31. A method of manufacture of a/door substantially as herein described and illustrated with reference to the accompanying drawings. 32. A security door whenever manufactured by a method as claimed in any one of the preceding Claims 15 to 31. Dated this the ^ day of March 2001

Full Text

This invention relates to a method of manufacture of a security door and such door whenever so manufactured.
More particularly, the door proposed herein has a steel-wood composite structure and offers high resistance to break-in attempts, bullets fired from a gun and burglars' instruments.
The manufacture of the said door involves simple and easy-to-carry out steps. The said door can thus be manufactured in the factory or even in situ, rendering the same cost-effective and economical.
The security door, according to this invention, comprises a framework of rails and stiles, the spaces between the rails and stiles being packed with filler material, the two faces of the framework being adhesively bonded, respectively, to panels, each panel being composed of layers of wooden veneers together with at least one steel wire layer sandwiched between two adjacent layers of veneers, the layers of each panel being bonded together, said layers and framework being of the same shape and size.
The method of manufacture of the security door, according to this invention, comprises the preparation of a framework of rails and stiles; packing the spaces between the rails and tiles with filler material: preparing panels of the shape and size of the framework, each panel being made up wooden veneers with at least one steel wire layer sandwiched between two adjacent veneer layers; adhesively bonding the layers of each panel together ; and

adhesively bonding the two faces of the framework, respectively, to the panels, before trimming and finishing the same
This invention will now be described with reference to the accompanying drawings, which illustrate by way of example, and not by way of limitation, one of the various possible embodiments of the security door proposed herein
Fig. 1 illustrtating in part section an assembly of the said embodiment
And
Fig. 2 illustrating a cut-away view of the said embodiment.
A framework F of rails( which are horizontal members) and stiles (which are vertical members) is prepared. The spaces between the rails and stiles are packed with filler materials comprising at least one of the following substances: treated and seasoned wood strips, plastic extruded profiles foams like polyurethane or phenolic or polystyrene foam. Panels P of the shape and size of the framework are prepared, each panel being made up wooden veneers V with at least one steel wire layer W sandwiched between two adjacent veneer layers.
The layers of each panel are adhesively bonded together. Also, the two faces of the framework, are adhesively bonded respectively, to the panels, before trimming and finishing the same.

The adhesive bonding between framework and panels and between the veneer layers of each panel is carried out by applying adhesives selected from natural and synthetic phenolic resins , resorcinol, cresol aldehydes, phenol formaldehyde, cross-linking PvAcs, urethane, acrylic co-polym ers.
The adhesive bonding is followed by hardening with hardening agents such as phenol formaldehyde , which is novolak converted into a resol, reacting with substances selected from para-toluene, sulphonic acid, phenol, polyphenol, resorcinol, cresol, aldehydes, tanners PvAc, urethane and acrylics, ammonium a chloride or sulphate.
Alternatively, the adhesive bonding is followed by hot pressing at 80 - 160 deg. C and between 18 - 28 Kg,/sq.cm.
The framework is preferably made of kiln seasoned timber such as timber from plantations in order to avoid the use of forest wood for environmental reasons.
The steel wire is pre-coated with an adhesive or a catalyst or both such as from natural and synthetic phenolic resins , resorcinol, cresol aldehydes, phenol formaldehyde, cross-linking PvAcs, urethane, acrylic co-polymers _ (adhesive) and para-toluene, sulphonic acid, phenol, polyphenol, resorcinol, cresol, aldehydes, tanners PvAc, urethane and acrylics, ammonium a chloride or sulphate, (catalyst).
The steel wire layer is prepared by laying steel wires side by side.

Additionally or in the alternative, the steel wires are woven together in m atrix form.
Additionally or in the alternative the steel wires are prepared in mesh form to constitute the steel wire layer.
The steel wires are preferably attached to each other by chemical bonding e.g. by the use of adhesives or by welding.
The external lipping of the door is indicated by L.
The terms and expressions herein are of description and not of limitation there being no intention in the use of such terms and expressions of excluding any equivalents of the features illustrated and described, but it is understood that various other embodiments of the door proposed herein are possible without departing from the scope and ambit of this invention.

We Claim:
1.
A security door comprising a framework of rails and stiles, the spaces between the raits and stiles being packed with filler material, the two faces of the framework being adhesively bonded, respectively, to panels, each panel being composed of layers of wooden veneers together with at least one steel wire layer sandwiched between two adjacent layers of veneers, the layers of each panel being bonded together, said layers and framework being of the same shape and size.
2. A door as claimed in Claim 1 wherein the filler material consists of at least one of the materials: treated and seasoned wood strips, plastic extruded profiles, plastic foams like polyurethane or phenolic or polystyrene foam.
3. A door as claimed in Claim 1 or Claim 2 wherein the framework is made of kiln seasoned timber.
4. A door as claimed in any one of the preceding Claims wherein the steel wire is provided with a coat of an adhesive.
5. A door as claimed in any one of the preceding Claims wherein the steel wire is provided with a coat of a catalyst.

6. A door as claimed in Claim 4 wherein the adhesive consists of at least
one of the following substances, namely, natural and synthetic
phenolic resins , resorcinol, cresol aldehydes, phenol formaldehyde,
cross-linking PvAcs, urethane, acrylic co-polymers.
7. A door as claimed in Claim 5 wherein the catalyst consists of at least
one of the following substances: para-toluene, sulphonic acid, phenol,
polyphenol, resorcinol, cresol, aldehydes, tanners PvAc, urethane and acrylics, ammonium a chloride or sulphate.
8. A door as claimed in any one of the preceding Claims wherein the steel
wire layer is composed of steel wires laid side by side.
9. A door as claimed in any one of the preceding Claims wherein the steel
wire layer is composed of steel wires in woven matrix form.
10.A door as claimed in any one of the preceding Claims wherein the steel wire layer is composed of steel wires in mesh form.
11. A door as claimed in any one of the preceding Claims wherein the steel wire layer is composed of steel wires attached to each other.
12.A door as claimed in Claim 11 wherein the steel wires are chemically bonded together.
13.A door as claimed in Claim 11 wherein the steel wires are welded together.

14.A security door substantially as herein described and illustrated with reference to the accompanying drawings.
15. A method of manufacture of a security door comprising the preparation of a framework of rails and stiles; packing the spaces between the rails and tiles with filler material: preparing panels of the shape and size of the framework, each panel being made up wooden veneers with at least one steel wire layer sandwiched between two adjacent veneer layers; adhesively bonding the layers of each panel together ; and adhesively bonding the two faces of the framework, respectively, to the panels, before trimming and finishing the same
16.A method as claimed in Claim 15 wherein the adhesive bonding between framework and panels and between the veneer layers of each panel is carried out by applying adhesives selected from natural and synthetic phenolic resins , resorcinol, cresol aldehydes, phenol formaldehyde, cross-linking PvAcs, urethane, acrylic co-polymers.
17.A method as claimed in Claim 15 or Claim 16 wherein the adhesive bonding is followed by hardening with hardening agents such as phenol formaldehyde , which is novolak converted into a resol, reacting with substances selected from para-toluene, sulphonic acid, phenol, polyphenol, resorcinol, cresol, aldehydes, tanners PvAc, urethane and acrylics, ammonium chloride or sulphate

18.A method as claimed in Claim 15 or Claim 16 wherein the adhesive bonding is followed by hot pressing at 80 - 160 deg. C and between 18 -28 Kg,/sq.cm.
19.A method as claimed in Claim IS wherein the spaces in the framework are packed with filler materials consisting of at least one of the following materials: treated and seasoned wood strips, plastic extruded profiles, plastic foams like polyurethane or phenolic or polystyrene foam.
20.A method as claimed in Claim 15 or Claim 16 wherein the framework is made of kiln seasoned timber.
21.A method as claimed in any one of the preceding Claims 15 to 17 wherein the steel wire is pre-coated with an adhesive.
22.A method as claimed in any one of the preceding Claims 15 to 18 wherein the steel wire is pre-coated with a catalyst.
23.A method as claimed in Claim 18 wherein the adhesive consists of at least one of the following substances : natural and synthetic phenolic resins , resorcinol, cresol aldehydes, phenol formaldehyde, cross-linking PvAcs, urethane, acrylic co-polymers.
24. A method as claimed in Claim 19 wherein the catalyst consists of at least one of the following substances : para-toluene, sulphonic acid, phenol,

polyphenol, resorcinol, cresol, aldehydes, tanners PvAc, urethane and acrylics, ammoniuma chloride or sulphate.
25.A method as claimed in any one of the preceding Claims 15 to 21 wherein the steel wire layer is prepared by laying steel wires side by side.
26.A method as claimed in any one of the preceding Claims 15 to 22 wherein the steel wires are woven together in matrix form.
27. A method as claimed in any one of the preceding Claims 15 to 23 wherein the steel wires are prepared in mesh form to constitute the steel wire layer.
28.A method as claimed in any one of the preceding Claims 15 to 54 wherein the steel wires are attached together to form the steel wire layer.
29.A method as claimed in any one of the preceding Claims 15 to 28 wherein the steel wires are chemically bonded together to form the steel wire layer.
30.A method as claimed in any one of the preceding Claims 15 to 28 wherein steel wires are welded together to form the steel wire layer.
31. A method of manufacture of a/door substantially as herein described and illustrated with reference to the accompanying drawings.

32. A security door whenever manufactured by a method as claimed in any one of the preceding Claims 15 to 31.
Dated this the ^ day of March 2001

Documents:

229-mas-2001- claims duplicate.pdf

229-mas-2001- claims original.pdf

229-mas-2001- correspondence others.pdf

229-mas-2001- correspondence po.pdf

229-mas-2001- description complete duplicate.pdf

229-mas-2001- description complete original.pdf

229-mas-2001- drawings.pdf

229-mas-2001- form 1.pdf

229-mas-2001- form 19.pdf

229-mas-2001- form 26.pdf

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Patent Number

207446

Indian Patent Application Number

229/MAS/2001

PG Journal Number

44/2007

Publication Date

02-Nov-2007

Grant Date

13-Jun-2007

Date of Filing

14-Mar-2001

Name of Patentee

M/S. KUTTY FLUSH DOORS AND FURNITURE CO. PRIVATE LIMITED

Applicant Address

37 POONAMALLEE HIGH ROAD, KOYAMBEDU, CHENNAI 600 017.

Inventors:

#	Inventor's Name	Inventor's Address
1	NE	NE

PCT International Classification Number

E06B003/30

PCT International Application Number

N/A

PCT International Filing date

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1			NA